Mailing List Archive

ISDN calls not making it to NM-6DM
Hi everyone.

Playing around with some old hardware in a lab, trying to get some ISDN
calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a 3825
with a NM-6D and NM-CE1T1-PRI.

Heres my config:

controller E1 1/0
pri-group timeslots 1-6,16
!
interface Serial1/0:15
no ip address
encapsulation ppp
isdn switch-type primary-net5
isdn incoming-voice modem 64
isdn bchan-number-order ascending
!
interface Group-Async0
ip unnumbered Loopback0
ip nat inside
ip virtual-reassembly in
encapsulation ppp
peer default ip address pool dialup
async mode interactive
no keepalive
ppp authentication chap callin
group-range 2/0 2/5
!
line 2/0 2/5
modem InOut
autoselect ppp
!

And heres what I see when an ISDN call comes in:

*Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8 callref =
0x0183
Bearer Capability i = 0x8890
Standard = CCITT
Transfer Capability = Unrestricted Digital
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Calling Party Number i = 0x80, '0733944124'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80
Plan:Unknown, Type:Unknown
*Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref =
0x8183 callID = 0x01E5 switch = primary-net5 interface = User
*Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now
connected to 0733944124 N/A
*Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
callref = 0x8183
Channel ID i = 0xA98381
Exclusive, Channel 1
*Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8 callref
= 0x8183
Channel ID i = 0xA98381
Exclusive, Channel 1
*Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
callref = 0x0183

So as far as I can tell the call comes in and establishes fine, but even
with "debug modem" and a couple of other debugs on, I dont see any activity
regarding connection to a modem. When I dial in from an analogue modem it
works just fine.

FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is connected
to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects calls to a
VWIC2-2MTF-E1 which is also emulating network and is connected to the
NM-CE1T1-PRI.

Wondering if any one can provide any pointers to help me out. Am I missing
something obvious?

Let me know if you require more information.

Thanks
Tom
Re: ISDN calls not making it to NM-6DM [ In reply to ]
A bearer cap of 0x8890 means the call is digital, not analog, so the call is not being passed to a modem. Your emulating network in between must be mucking with the bearer cap (check out debug on the 1841 to verify that it’s not originating at 8890).

mark

From: Tom Storey <tom@snnap.net<mailto:tom@snnap.net>>
Date: Friday, January 30, 2015 at 3:13 PM
To: "cisco-nas@puck.nether.net<mailto:cisco-nas@puck.nether.net>" <cisco-nas@puck.nether.net<mailto:cisco-nas@puck.nether.net>>
Subject: [cisco-nas] ISDN calls not making it to NM-6DM

Hi everyone.

Playing around with some old hardware in a lab, trying to get some ISDN calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a 3825 with a NM-6D and NM-CE1T1-PRI.

Heres my config:

controller E1 1/0
pri-group timeslots 1-6,16
!
interface Serial1/0:15
no ip address
encapsulation ppp
isdn switch-type primary-net5
isdn incoming-voice modem 64
isdn bchan-number-order ascending
!
interface Group-Async0
ip unnumbered Loopback0
ip nat inside
ip virtual-reassembly in
encapsulation ppp
peer default ip address pool dialup
async mode interactive
no keepalive
ppp authentication chap callin
group-range 2/0 2/5
!
line 2/0 2/5
modem InOut
autoselect ppp
!

And heres what I see when an ISDN call comes in:

*Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8 callref = 0x0183
Bearer Capability i = 0x8890
Standard = CCITT
Transfer Capability = Unrestricted Digital
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Calling Party Number i = 0x80, '0733944124'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80
Plan:Unknown, Type:Unknown
*Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref = 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
*Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now connected to 0733944124 N/A
*Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8 callref = 0x8183
Channel ID i = 0xA98381
Exclusive, Channel 1
*Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8 callref = 0x8183
Channel ID i = 0xA98381
Exclusive, Channel 1
*Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8 callref = 0x0183

So as far as I can tell the call comes in and establishes fine, but even with "debug modem" and a couple of other debugs on, I dont see any activity regarding connection to a modem. When I dial in from an analogue modem it works just fine.

FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects calls to a VWIC2-2MTF-E1 which is also emulating network and is connected to the NM-CE1T1-PRI.

Wondering if any one can provide any pointers to help me out. Am I missing something obvious?

Let me know if you require more information.

Thanks
Tom
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi Mark, did not expect such a quick response!

Indeed it is originating from the 1841 as 8890.

I also re-configured the 1841 to do DoV, where the bearercap changed to
0x8090A3, and this was also seen as the incomming bearercap on the 3825.

I was under the impression from my reading that the NM-xDM could also
terminate ISDN data calls, or have I got that wrong?

Cheers!

On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <mljohnso@cisco.com>
wrote:

> A bearer cap of 0x8890 means the call is digital, not analog, so the
> call is not being passed to a modem. Your emulating network in between
> must be mucking with the bearer cap (check out debug on the 1841 to verify
> that it’s not originating at 8890).
>
> mark
>
> From: Tom Storey <tom@snnap.net>
> Date: Friday, January 30, 2015 at 3:13 PM
> To: "cisco-nas@puck.nether.net" <cisco-nas@puck.nether.net>
> Subject: [cisco-nas] ISDN calls not making it to NM-6DM
>
> Hi everyone.
>
> Playing around with some old hardware in a lab, trying to get some ISDN
> calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a 3825
> with a NM-6D and NM-CE1T1-PRI.
>
> Heres my config:
>
> controller E1 1/0
> pri-group timeslots 1-6,16
> !
> interface Serial1/0:15
> no ip address
> encapsulation ppp
> isdn switch-type primary-net5
> isdn incoming-voice modem 64
> isdn bchan-number-order ascending
> !
> interface Group-Async0
> ip unnumbered Loopback0
> ip nat inside
> ip virtual-reassembly in
> encapsulation ppp
> peer default ip address pool dialup
> async mode interactive
> no keepalive
> ppp authentication chap callin
> group-range 2/0 2/5
> !
> line 2/0 2/5
> modem InOut
> autoselect ppp
> !
>
> And heres what I see when an ISDN call comes in:
>
> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8
> callref = 0x0183
> Bearer Capability i = 0x8890
> Standard = CCITT
> Transfer Capability = Unrestricted Digital
> Transfer Mode = Circuit
> Transfer Rate = 64 kbit/s
> Channel ID i = 0xA98381
> Exclusive, Channel 1
> Calling Party Number i = 0x80, '0733944124'
> Plan:Unknown, Type:Unknown
> Called Party Number i = 0x80
> Plan:Unknown, Type:Unknown
> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref =
> 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now
> connected to 0733944124 N/A
> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
> callref = 0x8183
> Channel ID i = 0xA98381
> Exclusive, Channel 1
> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8
> callref = 0x8183
> Channel ID i = 0xA98381
> Exclusive, Channel 1
> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
> callref = 0x0183
>
> So as far as I can tell the call comes in and establishes fine, but even
> with "debug modem" and a couple of other debugs on, I dont see any activity
> regarding connection to a modem. When I dial in from an analogue modem it
> works just fine.
>
> FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is
> connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects
> calls to a VWIC2-2MTF-E1 which is also emulating network and is connected
> to the NM-CE1T1-PRI.
>
> Wondering if any one can provide any pointers to help me out. Am I
> missing something obvious?
>
> Let me know if you require more information.
>
> Thanks
> Tom
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
If you just want to make it work, you can configure your IP stuff on the
serial1/0:15 interface and the call should terminate there. ISDN to ISDN
like.

Not sure how you would simulate a real analog modem type call from the 1841
side with what you have.

I could be wrong though, been a while...

jd.

On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net> wrote:

> Hi Mark, did not expect such a quick response!
>
> Indeed it is originating from the 1841 as 8890.
>
> I also re-configured the 1841 to do DoV, where the bearercap changed to
> 0x8090A3, and this was also seen as the incomming bearercap on the 3825.
>
> I was under the impression from my reading that the NM-xDM could also
> terminate ISDN data calls, or have I got that wrong?
>
> Cheers!
>
> On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <mljohnso@cisco.com>
> wrote:
>
>> A bearer cap of 0x8890 means the call is digital, not analog, so the
>> call is not being passed to a modem. Your emulating network in between
>> must be mucking with the bearer cap (check out debug on the 1841 to verify
>> that it’s not originating at 8890).
>>
>> mark
>>
>> From: Tom Storey <tom@snnap.net>
>> Date: Friday, January 30, 2015 at 3:13 PM
>> To: "cisco-nas@puck.nether.net" <cisco-nas@puck.nether.net>
>> Subject: [cisco-nas] ISDN calls not making it to NM-6DM
>>
>> Hi everyone.
>>
>> Playing around with some old hardware in a lab, trying to get some ISDN
>> calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a 3825
>> with a NM-6D and NM-CE1T1-PRI.
>>
>> Heres my config:
>>
>> controller E1 1/0
>> pri-group timeslots 1-6,16
>> !
>> interface Serial1/0:15
>> no ip address
>> encapsulation ppp
>> isdn switch-type primary-net5
>> isdn incoming-voice modem 64
>> isdn bchan-number-order ascending
>> !
>> interface Group-Async0
>> ip unnumbered Loopback0
>> ip nat inside
>> ip virtual-reassembly in
>> encapsulation ppp
>> peer default ip address pool dialup
>> async mode interactive
>> no keepalive
>> ppp authentication chap callin
>> group-range 2/0 2/5
>> !
>> line 2/0 2/5
>> modem InOut
>> autoselect ppp
>> !
>>
>> And heres what I see when an ISDN call comes in:
>>
>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8
>> callref = 0x0183
>> Bearer Capability i = 0x8890
>> Standard = CCITT
>> Transfer Capability = Unrestricted Digital
>> Transfer Mode = Circuit
>> Transfer Rate = 64 kbit/s
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> Calling Party Number i = 0x80, '0733944124'
>> Plan:Unknown, Type:Unknown
>> Called Party Number i = 0x80
>> Plan:Unknown, Type:Unknown
>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref =
>> 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
>> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now
>> connected to 0733944124 N/A
>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
>> callref = 0x8183
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8
>> callref = 0x8183
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
>> callref = 0x0183
>>
>> So as far as I can tell the call comes in and establishes fine, but
>> even with "debug modem" and a couple of other debugs on, I dont see any
>> activity regarding connection to a modem. When I dial in from an analogue
>> modem it works just fine.
>>
>> FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is
>> connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects
>> calls to a VWIC2-2MTF-E1 which is also emulating network and is connected
>> to the NM-CE1T1-PRI.
>>
>> Wondering if any one can provide any pointers to help me out. Am I
>> missing something obvious?
>>
>> Let me know if you require more information.
>>
>> Thanks
>> Tom
>>
>
>
> _______________________________________________
> cisco-nas mailing list
> cisco-nas@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nas
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Yeah, the DM’s are only going to terminate analog calls. As Josh says (long time, Josh!), configure the PRI (or use Legacy DDR or Dialer Profiles) and you should be good.

mark

From: joshd <jduffek@gmail.com<mailto:jduffek@gmail.com>>
Date: Friday, January 30, 2015 at 3:52 PM
To: Tom Storey <tom@snnap.net<mailto:tom@snnap.net>>
Cc: Mark Johnson <mljohnso@cisco.com<mailto:mljohnso@cisco.com>>, "cisco-nas@puck.nether.net<mailto:cisco-nas@puck.nether.net>" <cisco-nas@puck.nether.net<mailto:cisco-nas@puck.nether.net>>
Subject: Re: [cisco-nas] ISDN calls not making it to NM-6DM

If you just want to make it work, you can configure your IP stuff on the serial1/0:15 interface and the call should terminate there. ISDN to ISDN like.

Not sure how you would simulate a real analog modem type call from the 1841 side with what you have.

I could be wrong though, been a while...

jd.

On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net<mailto:tom@snnap.net>> wrote:
Hi Mark, did not expect such a quick response!

Indeed it is originating from the 1841 as 8890.

I also re-configured the 1841 to do DoV, where the bearercap changed to 0x8090A3, and this was also seen as the incomming bearercap on the 3825.

I was under the impression from my reading that the NM-xDM could also terminate ISDN data calls, or have I got that wrong?

Cheers!

On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <mljohnso@cisco.com<mailto:mljohnso@cisco.com>> wrote:
A bearer cap of 0x8890 means the call is digital, not analog, so the call is not being passed to a modem. Your emulating network in between must be mucking with the bearer cap (check out debug on the 1841 to verify that it’s not originating at 8890).

mark

From: Tom Storey <tom@snnap.net<mailto:tom@snnap.net>>
Date: Friday, January 30, 2015 at 3:13 PM
To: "cisco-nas@puck.nether.net<mailto:cisco-nas@puck.nether.net>" <cisco-nas@puck.nether.net<mailto:cisco-nas@puck.nether.net>>
Subject: [cisco-nas] ISDN calls not making it to NM-6DM

Hi everyone.

Playing around with some old hardware in a lab, trying to get some ISDN calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a 3825 with a NM-6D and NM-CE1T1-PRI.

Heres my config:

controller E1 1/0
pri-group timeslots 1-6,16
!
interface Serial1/0:15
no ip address
encapsulation ppp
isdn switch-type primary-net5
isdn incoming-voice modem 64
isdn bchan-number-order ascending
!
interface Group-Async0
ip unnumbered Loopback0
ip nat inside
ip virtual-reassembly in
encapsulation ppp
peer default ip address pool dialup
async mode interactive
no keepalive
ppp authentication chap callin
group-range 2/0 2/5
!
line 2/0 2/5
modem InOut
autoselect ppp
!

And heres what I see when an ISDN call comes in:

*Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8 callref = 0x0183
Bearer Capability i = 0x8890
Standard = CCITT
Transfer Capability = Unrestricted Digital
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Calling Party Number i = 0x80, '0733944124'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80
Plan:Unknown, Type:Unknown
*Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref = 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
*Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now connected to 0733944124 N/A
*Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8 callref = 0x8183
Channel ID i = 0xA98381
Exclusive, Channel 1
*Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8 callref = 0x8183
Channel ID i = 0xA98381
Exclusive, Channel 1
*Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8 callref = 0x0183

So as far as I can tell the call comes in and establishes fine, but even with "debug modem" and a couple of other debugs on, I dont see any activity regarding connection to a modem. When I dial in from an analogue modem it works just fine.

FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects calls to a VWIC2-2MTF-E1 which is also emulating network and is connected to the NM-CE1T1-PRI.

Wondering if any one can provide any pointers to help me out. Am I missing something obvious?

Let me know if you require more information.

Thanks
Tom


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Re: ISDN calls not making it to NM-6DM [ In reply to ]
Ah yes, that makes sense. Its all coming back to me... Been out of the SP
game too long clearly.

I will play a bit more tomorrow with this. Thanks!

On 31 January 2015 at 00:08, Mark Johnson (mljohnso) <mljohnso@cisco.com>
wrote:

> Yeah, the DM’s are only going to terminate analog calls. As Josh says
> (long time, Josh!), configure the PRI (or use Legacy DDR or Dialer
> Profiles) and you should be good.
>
> mark
>
> From: joshd <jduffek@gmail.com>
> Date: Friday, January 30, 2015 at 3:52 PM
> To: Tom Storey <tom@snnap.net>
> Cc: Mark Johnson <mljohnso@cisco.com>, "cisco-nas@puck.nether.net" <
> cisco-nas@puck.nether.net>
> Subject: Re: [cisco-nas] ISDN calls not making it to NM-6DM
>
> If you just want to make it work, you can configure your IP stuff on
> the serial1/0:15 interface and the call should terminate there. ISDN to
> ISDN like.
>
> Not sure how you would simulate a real analog modem type call from the
> 1841 side with what you have.
>
> I could be wrong though, been a while...
>
> jd.
>
> On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net> wrote:
>
>> Hi Mark, did not expect such a quick response!
>>
>> Indeed it is originating from the 1841 as 8890.
>>
>> I also re-configured the 1841 to do DoV, where the bearercap changed to
>> 0x8090A3, and this was also seen as the incomming bearercap on the 3825.
>>
>> I was under the impression from my reading that the NM-xDM could also
>> terminate ISDN data calls, or have I got that wrong?
>>
>> Cheers!
>>
>> On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <mljohnso@cisco.com>
>> wrote:
>>
>>> A bearer cap of 0x8890 means the call is digital, not analog, so the
>>> call is not being passed to a modem. Your emulating network in between
>>> must be mucking with the bearer cap (check out debug on the 1841 to verify
>>> that it’s not originating at 8890).
>>>
>>> mark
>>>
>>> From: Tom Storey <tom@snnap.net>
>>> Date: Friday, January 30, 2015 at 3:13 PM
>>> To: "cisco-nas@puck.nether.net" <cisco-nas@puck.nether.net>
>>> Subject: [cisco-nas] ISDN calls not making it to NM-6DM
>>>
>>> Hi everyone.
>>>
>>> Playing around with some old hardware in a lab, trying to get some
>>> ISDN calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a
>>> 3825 with a NM-6D and NM-CE1T1-PRI.
>>>
>>> Heres my config:
>>>
>>> controller E1 1/0
>>> pri-group timeslots 1-6,16
>>> !
>>> interface Serial1/0:15
>>> no ip address
>>> encapsulation ppp
>>> isdn switch-type primary-net5
>>> isdn incoming-voice modem 64
>>> isdn bchan-number-order ascending
>>> !
>>> interface Group-Async0
>>> ip unnumbered Loopback0
>>> ip nat inside
>>> ip virtual-reassembly in
>>> encapsulation ppp
>>> peer default ip address pool dialup
>>> async mode interactive
>>> no keepalive
>>> ppp authentication chap callin
>>> group-range 2/0 2/5
>>> !
>>> line 2/0 2/5
>>> modem InOut
>>> autoselect ppp
>>> !
>>>
>>> And heres what I see when an ISDN call comes in:
>>>
>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8
>>> callref = 0x0183
>>> Bearer Capability i = 0x8890
>>> Standard = CCITT
>>> Transfer Capability = Unrestricted Digital
>>> Transfer Mode = Circuit
>>> Transfer Rate = 64 kbit/s
>>> Channel ID i = 0xA98381
>>> Exclusive, Channel 1
>>> Calling Party Number i = 0x80, '0733944124'
>>> Plan:Unknown, Type:Unknown
>>> Called Party Number i = 0x80
>>> Plan:Unknown, Type:Unknown
>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref =
>>> 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
>>> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now
>>> connected to 0733944124 N/A
>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
>>> callref = 0x8183
>>> Channel ID i = 0xA98381
>>> Exclusive, Channel 1
>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8
>>> callref = 0x8183
>>> Channel ID i = 0xA98381
>>> Exclusive, Channel 1
>>> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
>>> callref = 0x0183
>>>
>>> So as far as I can tell the call comes in and establishes fine, but
>>> even with "debug modem" and a couple of other debugs on, I dont see any
>>> activity regarding connection to a modem. When I dial in from an analogue
>>> modem it works just fine.
>>>
>>> FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is
>>> connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects
>>> calls to a VWIC2-2MTF-E1 which is also emulating network and is connected
>>> to the NM-CE1T1-PRI.
>>>
>>> Wondering if any one can provide any pointers to help me out. Am I
>>> missing something obvious?
>>>
>>> Let me know if you require more information.
>>>
>>> Thanks
>>> Tom
>>>
>>
>>
>> _______________________________________________
>> cisco-nas mailing list
>> cisco-nas@puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-nas
>>
>
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi,

On Fri, Jan 30, 2015 at 11:32:24PM +0000, Tom Storey wrote:
> I was under the impression from my reading that the NM-xDM could also
> terminate ISDN data calls, or have I got that wrong?

It's a modem, so it's for modem calls.

ISDN data is handled by the NM-CE1T1-PRI.

gert
--
USENET is *not* the non-clickable part of WWW!
//www.muc.de/~gert/
Gert Doering - Munich, Germany gert@greenie.muc.de
fax: +49-89-35655025 gert@net.informatik.tu-muenchen.de
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Played around with this a bit more, and Ive configured up my Se1/0:15
interface with PPP et al, almost matches the Group-Async interface, so
should be right.

When the ISDN data call establishes (what looks to be successfully) I see
both ends start TXing PPP LCP packets, which is a good sign, but neither
end is receiving anything from the other side.

Pitty I cant wireshark the B channels to see whats going back and forth. :-P

On 31 January 2015 at 00:08, Mark Johnson (mljohnso) <mljohnso@cisco.com>
wrote:

> Yeah, the DM’s are only going to terminate analog calls. As Josh says
> (long time, Josh!), configure the PRI (or use Legacy DDR or Dialer
> Profiles) and you should be good.
>
> mark
>
> From: joshd <jduffek@gmail.com>
> Date: Friday, January 30, 2015 at 3:52 PM
> To: Tom Storey <tom@snnap.net>
> Cc: Mark Johnson <mljohnso@cisco.com>, "cisco-nas@puck.nether.net" <
> cisco-nas@puck.nether.net>
> Subject: Re: [cisco-nas] ISDN calls not making it to NM-6DM
>
> If you just want to make it work, you can configure your IP stuff on
> the serial1/0:15 interface and the call should terminate there. ISDN to
> ISDN like.
>
> Not sure how you would simulate a real analog modem type call from the
> 1841 side with what you have.
>
> I could be wrong though, been a while...
>
> jd.
>
> On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net> wrote:
>
>> Hi Mark, did not expect such a quick response!
>>
>> Indeed it is originating from the 1841 as 8890.
>>
>> I also re-configured the 1841 to do DoV, where the bearercap changed to
>> 0x8090A3, and this was also seen as the incomming bearercap on the 3825.
>>
>> I was under the impression from my reading that the NM-xDM could also
>> terminate ISDN data calls, or have I got that wrong?
>>
>> Cheers!
>>
>> On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <mljohnso@cisco.com>
>> wrote:
>>
>>> A bearer cap of 0x8890 means the call is digital, not analog, so the
>>> call is not being passed to a modem. Your emulating network in between
>>> must be mucking with the bearer cap (check out debug on the 1841 to verify
>>> that it’s not originating at 8890).
>>>
>>> mark
>>>
>>> From: Tom Storey <tom@snnap.net>
>>> Date: Friday, January 30, 2015 at 3:13 PM
>>> To: "cisco-nas@puck.nether.net" <cisco-nas@puck.nether.net>
>>> Subject: [cisco-nas] ISDN calls not making it to NM-6DM
>>>
>>> Hi everyone.
>>>
>>> Playing around with some old hardware in a lab, trying to get some
>>> ISDN calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a
>>> 3825 with a NM-6D and NM-CE1T1-PRI.
>>>
>>> Heres my config:
>>>
>>> controller E1 1/0
>>> pri-group timeslots 1-6,16
>>> !
>>> interface Serial1/0:15
>>> no ip address
>>> encapsulation ppp
>>> isdn switch-type primary-net5
>>> isdn incoming-voice modem 64
>>> isdn bchan-number-order ascending
>>> !
>>> interface Group-Async0
>>> ip unnumbered Loopback0
>>> ip nat inside
>>> ip virtual-reassembly in
>>> encapsulation ppp
>>> peer default ip address pool dialup
>>> async mode interactive
>>> no keepalive
>>> ppp authentication chap callin
>>> group-range 2/0 2/5
>>> !
>>> line 2/0 2/5
>>> modem InOut
>>> autoselect ppp
>>> !
>>>
>>> And heres what I see when an ISDN call comes in:
>>>
>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8
>>> callref = 0x0183
>>> Bearer Capability i = 0x8890
>>> Standard = CCITT
>>> Transfer Capability = Unrestricted Digital
>>> Transfer Mode = Circuit
>>> Transfer Rate = 64 kbit/s
>>> Channel ID i = 0xA98381
>>> Exclusive, Channel 1
>>> Calling Party Number i = 0x80, '0733944124'
>>> Plan:Unknown, Type:Unknown
>>> Called Party Number i = 0x80
>>> Plan:Unknown, Type:Unknown
>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref =
>>> 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
>>> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now
>>> connected to 0733944124 N/A
>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
>>> callref = 0x8183
>>> Channel ID i = 0xA98381
>>> Exclusive, Channel 1
>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8
>>> callref = 0x8183
>>> Channel ID i = 0xA98381
>>> Exclusive, Channel 1
>>> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
>>> callref = 0x0183
>>>
>>> So as far as I can tell the call comes in and establishes fine, but
>>> even with "debug modem" and a couple of other debugs on, I dont see any
>>> activity regarding connection to a modem. When I dial in from an analogue
>>> modem it works just fine.
>>>
>>> FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is
>>> connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects
>>> calls to a VWIC2-2MTF-E1 which is also emulating network and is connected
>>> to the NM-CE1T1-PRI.
>>>
>>> Wondering if any one can provide any pointers to help me out. Am I
>>> missing something obvious?
>>>
>>> Let me know if you require more information.
>>>
>>> Thanks
>>> Tom
>>>
>>
>>
>> _______________________________________________
>> cisco-nas mailing list
>> cisco-nas@puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-nas
>>
>
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
So just O CONFREQs on each side then? You could look at the "sh int
se1/0:x"/b-channel, maybe you're getting input errors or something?


On Sat, Jan 31, 2015 at 1:38 PM, Tom Storey <tom@snnap.net> wrote:

> Played around with this a bit more, and Ive configured up my Se1/0:15
> interface with PPP et al, almost matches the Group-Async interface, so
> should be right.
>
> When the ISDN data call establishes (what looks to be successfully) I see
> both ends start TXing PPP LCP packets, which is a good sign, but neither
> end is receiving anything from the other side.
>
> Pitty I cant wireshark the B channels to see whats going back and forth.
> :-P
>
> On 31 January 2015 at 00:08, Mark Johnson (mljohnso) <mljohnso@cisco.com>
> wrote:
>
>> Yeah, the DM’s are only going to terminate analog calls. As Josh says
>> (long time, Josh!), configure the PRI (or use Legacy DDR or Dialer
>> Profiles) and you should be good.
>>
>> mark
>>
>> From: joshd <jduffek@gmail.com>
>> Date: Friday, January 30, 2015 at 3:52 PM
>> To: Tom Storey <tom@snnap.net>
>> Cc: Mark Johnson <mljohnso@cisco.com>, "cisco-nas@puck.nether.net" <
>> cisco-nas@puck.nether.net>
>> Subject: Re: [cisco-nas] ISDN calls not making it to NM-6DM
>>
>> If you just want to make it work, you can configure your IP stuff on
>> the serial1/0:15 interface and the call should terminate there. ISDN to
>> ISDN like.
>>
>> Not sure how you would simulate a real analog modem type call from the
>> 1841 side with what you have.
>>
>> I could be wrong though, been a while...
>>
>> jd.
>>
>> On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net> wrote:
>>
>>> Hi Mark, did not expect such a quick response!
>>>
>>> Indeed it is originating from the 1841 as 8890.
>>>
>>> I also re-configured the 1841 to do DoV, where the bearercap changed
>>> to 0x8090A3, and this was also seen as the incomming bearercap on the 3825.
>>>
>>> I was under the impression from my reading that the NM-xDM could also
>>> terminate ISDN data calls, or have I got that wrong?
>>>
>>> Cheers!
>>>
>>> On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <mljohnso@cisco.com
>>> > wrote:
>>>
>>>> A bearer cap of 0x8890 means the call is digital, not analog, so the
>>>> call is not being passed to a modem. Your emulating network in between
>>>> must be mucking with the bearer cap (check out debug on the 1841 to verify
>>>> that it’s not originating at 8890).
>>>>
>>>> mark
>>>>
>>>> From: Tom Storey <tom@snnap.net>
>>>> Date: Friday, January 30, 2015 at 3:13 PM
>>>> To: "cisco-nas@puck.nether.net" <cisco-nas@puck.nether.net>
>>>> Subject: [cisco-nas] ISDN calls not making it to NM-6DM
>>>>
>>>> Hi everyone.
>>>>
>>>> Playing around with some old hardware in a lab, trying to get some
>>>> ISDN calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a
>>>> 3825 with a NM-6D and NM-CE1T1-PRI.
>>>>
>>>> Heres my config:
>>>>
>>>> controller E1 1/0
>>>> pri-group timeslots 1-6,16
>>>> !
>>>> interface Serial1/0:15
>>>> no ip address
>>>> encapsulation ppp
>>>> isdn switch-type primary-net5
>>>> isdn incoming-voice modem 64
>>>> isdn bchan-number-order ascending
>>>> !
>>>> interface Group-Async0
>>>> ip unnumbered Loopback0
>>>> ip nat inside
>>>> ip virtual-reassembly in
>>>> encapsulation ppp
>>>> peer default ip address pool dialup
>>>> async mode interactive
>>>> no keepalive
>>>> ppp authentication chap callin
>>>> group-range 2/0 2/5
>>>> !
>>>> line 2/0 2/5
>>>> modem InOut
>>>> autoselect ppp
>>>> !
>>>>
>>>> And heres what I see when an ISDN call comes in:
>>>>
>>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8
>>>> callref = 0x0183
>>>> Bearer Capability i = 0x8890
>>>> Standard = CCITT
>>>> Transfer Capability = Unrestricted Digital
>>>> Transfer Mode = Circuit
>>>> Transfer Rate = 64 kbit/s
>>>> Channel ID i = 0xA98381
>>>> Exclusive, Channel 1
>>>> Calling Party Number i = 0x80, '0733944124'
>>>> Plan:Unknown, Type:Unknown
>>>> Called Party Number i = 0x80
>>>> Plan:Unknown, Type:Unknown
>>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref =
>>>> 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
>>>> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now
>>>> connected to 0733944124 N/A
>>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
>>>> callref = 0x8183
>>>> Channel ID i = 0xA98381
>>>> Exclusive, Channel 1
>>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8
>>>> callref = 0x8183
>>>> Channel ID i = 0xA98381
>>>> Exclusive, Channel 1
>>>> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
>>>> callref = 0x0183
>>>>
>>>> So as far as I can tell the call comes in and establishes fine, but
>>>> even with "debug modem" and a couple of other debugs on, I dont see any
>>>> activity regarding connection to a modem. When I dial in from an analogue
>>>> modem it works just fine.
>>>>
>>>> FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is
>>>> connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects
>>>> calls to a VWIC2-2MTF-E1 which is also emulating network and is connected
>>>> to the NM-CE1T1-PRI.
>>>>
>>>> Wondering if any one can provide any pointers to help me out. Am I
>>>> missing something obvious?
>>>>
>>>> Let me know if you require more information.
>>>>
>>>> Thanks
>>>> Tom
>>>>
>>>
>>>
>>> _______________________________________________
>>> cisco-nas mailing list
>>> cisco-nas@puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/cisco-nas
>>>
>>
>>
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hey Josh.

Yeah, just O CONFREQs from both sides.

I do see input crc/frame errors on Se1/0:0 on the 3825, and also on Di0 on
the 1841. No errors on any of the other PRI/BRI interfaces in between
though.

Tried swapping the VIC2-2BRI in the 3825 which didnt help, but I dont have
a spare WIC-1B to test with at the moment.



On 2 February 2015 at 13:51, joshd <jduffek@gmail.com> wrote:

> So just O CONFREQs on each side then? You could look at the "sh int
> se1/0:x"/b-channel, maybe you're getting input errors or something?
>
>
>
> On Sat, Jan 31, 2015 at 1:38 PM, Tom Storey <tom@snnap.net> wrote:
>
>> Played around with this a bit more, and Ive configured up my Se1/0:15
>> interface with PPP et al, almost matches the Group-Async interface, so
>> should be right.
>>
>> When the ISDN data call establishes (what looks to be successfully) I see
>> both ends start TXing PPP LCP packets, which is a good sign, but neither
>> end is receiving anything from the other side.
>>
>> Pitty I cant wireshark the B channels to see whats going back and forth.
>> :-P
>>
>> On 31 January 2015 at 00:08, Mark Johnson (mljohnso) <mljohnso@cisco.com>
>> wrote:
>>
>>> Yeah, the DM’s are only going to terminate analog calls. As Josh says
>>> (long time, Josh!), configure the PRI (or use Legacy DDR or Dialer
>>> Profiles) and you should be good.
>>>
>>> mark
>>>
>>> From: joshd <jduffek@gmail.com>
>>> Date: Friday, January 30, 2015 at 3:52 PM
>>> To: Tom Storey <tom@snnap.net>
>>> Cc: Mark Johnson <mljohnso@cisco.com>, "cisco-nas@puck.nether.net" <
>>> cisco-nas@puck.nether.net>
>>> Subject: Re: [cisco-nas] ISDN calls not making it to NM-6DM
>>>
>>> If you just want to make it work, you can configure your IP stuff
>>> on the serial1/0:15 interface and the call should terminate there. ISDN to
>>> ISDN like.
>>>
>>> Not sure how you would simulate a real analog modem type call from the
>>> 1841 side with what you have.
>>>
>>> I could be wrong though, been a while...
>>>
>>> jd.
>>>
>>> On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net> wrote:
>>>
>>>> Hi Mark, did not expect such a quick response!
>>>>
>>>> Indeed it is originating from the 1841 as 8890.
>>>>
>>>> I also re-configured the 1841 to do DoV, where the bearercap changed
>>>> to 0x8090A3, and this was also seen as the incomming bearercap on the 3825.
>>>>
>>>> I was under the impression from my reading that the NM-xDM could also
>>>> terminate ISDN data calls, or have I got that wrong?
>>>>
>>>> Cheers!
>>>>
>>>> On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <
>>>> mljohnso@cisco.com> wrote:
>>>>
>>>>> A bearer cap of 0x8890 means the call is digital, not analog, so the
>>>>> call is not being passed to a modem. Your emulating network in between
>>>>> must be mucking with the bearer cap (check out debug on the 1841 to verify
>>>>> that it’s not originating at 8890).
>>>>>
>>>>> mark
>>>>>
>>>>> From: Tom Storey <tom@snnap.net>
>>>>> Date: Friday, January 30, 2015 at 3:13 PM
>>>>> To: "cisco-nas@puck.nether.net" <cisco-nas@puck.nether.net>
>>>>> Subject: [cisco-nas] ISDN calls not making it to NM-6DM
>>>>>
>>>>> Hi everyone.
>>>>>
>>>>> Playing around with some old hardware in a lab, trying to get some
>>>>> ISDN calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a
>>>>> 3825 with a NM-6D and NM-CE1T1-PRI.
>>>>>
>>>>> Heres my config:
>>>>>
>>>>> controller E1 1/0
>>>>> pri-group timeslots 1-6,16
>>>>> !
>>>>> interface Serial1/0:15
>>>>> no ip address
>>>>> encapsulation ppp
>>>>> isdn switch-type primary-net5
>>>>> isdn incoming-voice modem 64
>>>>> isdn bchan-number-order ascending
>>>>> !
>>>>> interface Group-Async0
>>>>> ip unnumbered Loopback0
>>>>> ip nat inside
>>>>> ip virtual-reassembly in
>>>>> encapsulation ppp
>>>>> peer default ip address pool dialup
>>>>> async mode interactive
>>>>> no keepalive
>>>>> ppp authentication chap callin
>>>>> group-range 2/0 2/5
>>>>> !
>>>>> line 2/0 2/5
>>>>> modem InOut
>>>>> autoselect ppp
>>>>> !
>>>>>
>>>>> And heres what I see when an ISDN call comes in:
>>>>>
>>>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8
>>>>> callref = 0x0183
>>>>> Bearer Capability i = 0x8890
>>>>> Standard = CCITT
>>>>> Transfer Capability = Unrestricted Digital
>>>>> Transfer Mode = Circuit
>>>>> Transfer Rate = 64 kbit/s
>>>>> Channel ID i = 0xA98381
>>>>> Exclusive, Channel 1
>>>>> Calling Party Number i = 0x80, '0733944124'
>>>>> Plan:Unknown, Type:Unknown
>>>>> Called Party Number i = 0x80
>>>>> Plan:Unknown, Type:Unknown
>>>>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP callref
>>>>> = 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
>>>>> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is
>>>>> now connected to 0733944124 N/A
>>>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
>>>>> callref = 0x8183
>>>>> Channel ID i = 0xA98381
>>>>> Exclusive, Channel 1
>>>>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8
>>>>> callref = 0x8183
>>>>> Channel ID i = 0xA98381
>>>>> Exclusive, Channel 1
>>>>> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
>>>>> callref = 0x0183
>>>>>
>>>>> So as far as I can tell the call comes in and establishes fine, but
>>>>> even with "debug modem" and a couple of other debugs on, I dont see any
>>>>> activity regarding connection to a modem. When I dial in from an analogue
>>>>> modem it works just fine.
>>>>>
>>>>> FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is
>>>>> connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects
>>>>> calls to a VWIC2-2MTF-E1 which is also emulating network and is connected
>>>>> to the NM-CE1T1-PRI.
>>>>>
>>>>> Wondering if any one can provide any pointers to help me out. Am I
>>>>> missing something obvious?
>>>>>
>>>>> Let me know if you require more information.
>>>>>
>>>>> Thanks
>>>>> Tom
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> cisco-nas mailing list
>>>> cisco-nas@puck.nether.net
>>>> https://puck.nether.net/mailman/listinfo/cisco-nas
>>>>
>>>
>>>
>>
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi Tim,

Maybe you're not getting 64kbps clear. Maybe you can knock your data
calls down to 56k and they'll work?

(Now ... can I remember how to do that? I guess if using legacy dialer,
then "dialer map ... speed 56" ... or if dialer profile, then "dialer
string ... class XXX" with "map-class dialer XXX"/dialer isdn speed 56".)

Wait a minute. VIC-2-2BRI? That doesn't even handle ISDN data, does it?

Hth,

Aaron

----

On 2/2/2015 3:02 PM, tom@snnap.net (Tom Storey) wrote:
> Hey Josh.
>
> Yeah, just O CONFREQs from both sides.
>
> I do see input crc/frame errors on Se1/0:0 on the 3825, and also on
> Di0 on the 1841. No errors on any of the other PRI/BRI interfaces in
> between though.
>
> Tried swapping the VIC2-2BRI in the 3825 which didnt help, but I dont
> have a spare WIC-1B to test with at the moment.
>
>
>
> On 2 February 2015 at 13:51, joshd <jduffek@gmail.com
> <mailto:jduffek@gmail.com>> wrote:
>
> So just O CONFREQs on each side then? You could look at the "sh
> int se1/0:x"/b-channel, maybe you're getting input errors or
> something?
>
>
>
> On Sat, Jan 31, 2015 at 1:38 PM, Tom Storey <tom@snnap.net
> <mailto:tom@snnap.net>> wrote:
>
> Played around with this a bit more, and Ive configured up my
> Se1/0:15 interface with PPP et al, almost matches the
> Group-Async interface, so should be right.
>
> When the ISDN data call establishes (what looks to be
> successfully) I see both ends start TXing PPP LCP packets,
> which is a good sign, but neither end is receiving anything
> from the other side.
>
> Pitty I cant wireshark the B channels to see whats going back
> and forth. :-P
>
> On 31 January 2015 at 00:08, Mark Johnson (mljohnso)
> <mljohnso@cisco.com <mailto:mljohnso@cisco.com>> wrote:
>
> Yeah, the DM’s are only going to terminate analog calls.
> As Josh says (long time, Josh!), configure the PRI (or use
> Legacy DDR or Dialer Profiles) and you should be good.
>
> mark
>
> From: joshd <jduffek@gmail.com <mailto:jduffek@gmail.com>>
> Date: Friday, January 30, 2015 at 3:52 PM
> To: Tom Storey <tom@snnap.net <mailto:tom@snnap.net>>
> Cc: Mark Johnson <mljohnso@cisco.com
> <mailto:mljohnso@cisco.com>>, "cisco-nas@puck.nether.net
> <mailto:cisco-nas@puck.nether.net>"
> <cisco-nas@puck.nether.net <mailto:cisco-nas@puck.nether.net>>
> Subject: Re: [cisco-nas] ISDN calls not making it to NM-6DM
>
> If you just want to make it work, you can configure your
> IP stuff on the serial1/0:15 interface and the call should
> terminate there. ISDN to ISDN like.
>
> Not sure how you would simulate a real analog modem type
> call from the 1841 side with what you have.
>
> I could be wrong though, been a while...
>
> jd.
>
> On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net
> <mailto:tom@snnap.net>> wrote:
>
> Hi Mark, did not expect such a quick response!
>
> Indeed it is originating from the 1841 as 8890.
>
> I also re-configured the 1841 to do DoV, where the
> bearercap changed to 0x8090A3, and this was also seen
> as the incomming bearercap on the 3825.
>
> I was under the impression from my reading that the
> NM-xDM could also terminate ISDN data calls, or have I
> got that wrong?
>
> Cheers!
>
> On 30 January 2015 at 23:27, Mark Johnson (mljohnso)
> <mljohnso@cisco.com <mailto:mljohnso@cisco.com>> wrote:
>
> A bearer cap of 0x8890 means the call is digital,
> not analog, so the call is not being passed to a
> modem. Your emulating network in between must be
> mucking with the bearer cap (check out debug on
> the 1841 to verify that it’s not originating at 8890).
>
> mark
>
> From: Tom Storey <tom@snnap.net
> <mailto:tom@snnap.net>>
> Date: Friday, January 30, 2015 at 3:13 PM
> To: "cisco-nas@puck.nether.net
> <mailto:cisco-nas@puck.nether.net>"
> <cisco-nas@puck.nether.net
> <mailto:cisco-nas@puck.nether.net>>
> Subject: [cisco-nas] ISDN calls not making it to
> NM-6DM
>
> Hi everyone.
>
> Playing around with some old hardware in a lab,
> trying to get some ISDN calls originated from an
> 1841 with a WIC-1B-S/T-V3 to be answered on a 3825
> with a NM-6D and NM-CE1T1-PRI.
>
> Heres my config:
>
> controller E1 1/0
> pri-group timeslots 1-6,16
> !
> interface Serial1/0:15
> no ip address
> encapsulation ppp
> isdn switch-type primary-net5
> isdn incoming-voice modem 64
> isdn bchan-number-order ascending
> !
> interface Group-Async0
> ip unnumbered Loopback0
> ip nat inside
> ip virtual-reassembly in
> encapsulation ppp
> peer default ip address pool dialup
> async mode interactive
> no keepalive
> ppp authentication chap callin
> group-range 2/0 2/5
> !
> line 2/0 2/5
> modem InOut
> autoselect ppp
> !
>
> And heres what I see when an ISDN call comes in:
>
> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX
> <- SETUP pd = 8 callref = 0x0183
> Bearer Capability i = 0x8890
> Standard = CCITT
> Transfer Capability = Unrestricted Digital
> Transfer Mode = Circuit
> Transfer Rate = 64 kbit/s
> Channel ID i = 0xA98381
> Exclusive, Channel 1
> Calling Party Number i = 0x80, '0733944124'
> Plan:Unknown, Type:Unknown
> Called Party Number i = 0x80
> Plan:Unknown, Type:Unknown
> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931:
> Received SETUP callref = 0x8183 callID = 0x01E5
> switch = primary-net5 interface = User
> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT:
> Interface Serial1/0:0 is now connected to
> 0733944124 N/A
> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX
> -> CALL_PROC pd = 8 callref = 0x8183
> Channel ID i = 0xA98381
> Exclusive, Channel 1
> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX
> -> CONNECT pd = 8 callref = 0x8183
> Channel ID i = 0xA98381
> Exclusive, Channel 1
> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX
> <- CONNECT_ACK pd = 8 callref = 0x0183
>
> So as far as I can tell the call comes in and
> establishes fine, but even with "debug modem" and
> a couple of other debugs on, I dont see any
> activity regarding connection to a modem. When I
> dial in from an analogue modem it works just fine.
>
> FWIW I am using the 3825 as a PSTN simulator as
> well. The 1841 is connected to a VIC2-2BRI-NT/TE
> emulating network, and a dialpeer connects calls
> to a VWIC2-2MTF-E1 which is also emulating network
> and is connected to the NM-CE1T1-PRI.
>
> Wondering if any one can provide any pointers to
> help me out. Am I missing something obvious?
>
> Let me know if you require more information.
>
> Thanks
> Tom
>
>
>
> _______________________________________________
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>
>
>
>
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Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi Aaron,

I did try a dialer map to (try to) drop the call down to 56k, that didnt
work either. Wouldnt even dial out.

I was hoping that with the [23]800 series ability to do TDM switching that
I might be able to use a VIC to provide BRI ports for a "PSTN simulator"
through which I could switch voice and data calls to lab various scenarios.

Its looking a little less likely that I can use the BRI VIC for data, I was
hoping it might be somewhat "transparent". Ive got a couple of FXS ports
that I managed to successfully establish an analogue dial up call, but
thats a little different I suppose.

On 2 February 2015 at 22:22, Aaron Leonard <aaron@cisco.com> wrote:

> Hi Tim,
>
> Maybe you're not getting 64kbps clear. Maybe you can knock your data calls
> down to 56k and they'll work?
>
> (Now ... can I remember how to do that? I guess if using legacy dialer,
> then "dialer map ... speed 56" ... or if dialer profile, then "dialer
> string ... class XXX" with "map-class dialer XXX"/dialer isdn speed 56".)
>
> Wait a minute. VIC-2-2BRI? That doesn't even handle ISDN data, does it?
>
> Hth,
>
> Aaron
>
> ----
>
> On 2/2/2015 3:02 PM, tom@snnap.net (Tom Storey) wrote:
>
>> Hey Josh.
>>
>> Yeah, just O CONFREQs from both sides.
>>
>> I do see input crc/frame errors on Se1/0:0 on the 3825, and also on Di0
>> on the 1841. No errors on any of the other PRI/BRI interfaces in between
>> though.
>>
>> Tried swapping the VIC2-2BRI in the 3825 which didnt help, but I dont
>> have a spare WIC-1B to test with at the moment.
>>
>>
>>
>> On 2 February 2015 at 13:51, joshd <jduffek@gmail.com <mailto:
>> jduffek@gmail.com>> wrote:
>>
>> So just O CONFREQs on each side then? You could look at the "sh
>> int se1/0:x"/b-channel, maybe you're getting input errors or
>> something?
>>
>>
>>
>> On Sat, Jan 31, 2015 at 1:38 PM, Tom Storey <tom@snnap.net
>> <mailto:tom@snnap.net>> wrote:
>>
>> Played around with this a bit more, and Ive configured up my
>> Se1/0:15 interface with PPP et al, almost matches the
>> Group-Async interface, so should be right.
>>
>> When the ISDN data call establishes (what looks to be
>> successfully) I see both ends start TXing PPP LCP packets,
>> which is a good sign, but neither end is receiving anything
>> from the other side.
>>
>> Pitty I cant wireshark the B channels to see whats going back
>> and forth. :-P
>>
>> On 31 January 2015 at 00:08, Mark Johnson (mljohnso)
>> <mljohnso@cisco.com <mailto:mljohnso@cisco.com>> wrote:
>>
>> Yeah, the DM’s are only going to terminate analog calls.
>> As Josh says (long time, Josh!), configure the PRI (or use
>> Legacy DDR or Dialer Profiles) and you should be good.
>>
>> mark
>>
>> From: joshd <jduffek@gmail.com <mailto:jduffek@gmail.com>>
>> Date: Friday, January 30, 2015 at 3:52 PM
>> To: Tom Storey <tom@snnap.net <mailto:tom@snnap.net>>
>> Cc: Mark Johnson <mljohnso@cisco.com
>> <mailto:mljohnso@cisco.com>>, "cisco-nas@puck.nether.net
>> <mailto:cisco-nas@puck.nether.net>"
>> <cisco-nas@puck.nether.net <mailto:cisco-nas@puck.nether.net
>> >>
>> Subject: Re: [cisco-nas] ISDN calls not making it to NM-6DM
>>
>> If you just want to make it work, you can configure your
>> IP stuff on the serial1/0:15 interface and the call should
>> terminate there. ISDN to ISDN like.
>>
>> Not sure how you would simulate a real analog modem type
>> call from the 1841 side with what you have.
>>
>> I could be wrong though, been a while...
>>
>> jd.
>>
>> On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom@snnap.net
>> <mailto:tom@snnap.net>> wrote:
>>
>> Hi Mark, did not expect such a quick response!
>>
>> Indeed it is originating from the 1841 as 8890.
>>
>> I also re-configured the 1841 to do DoV, where the
>> bearercap changed to 0x8090A3, and this was also seen
>> as the incomming bearercap on the 3825.
>>
>> I was under the impression from my reading that the
>> NM-xDM could also terminate ISDN data calls, or have I
>> got that wrong?
>>
>> Cheers!
>>
>> On 30 January 2015 at 23:27, Mark Johnson (mljohnso)
>> <mljohnso@cisco.com <mailto:mljohnso@cisco.com>> wrote:
>>
>> A bearer cap of 0x8890 means the call is digital,
>> not analog, so the call is not being passed to a
>> modem. Your emulating network in between must be
>> mucking with the bearer cap (check out debug on
>> the 1841 to verify that it’s not originating at 8890).
>>
>> mark
>>
>> From: Tom Storey <tom@snnap.net
>> <mailto:tom@snnap.net>>
>> Date: Friday, January 30, 2015 at 3:13 PM
>> To: "cisco-nas@puck.nether.net
>> <mailto:cisco-nas@puck.nether.net>"
>> <cisco-nas@puck.nether.net
>> <mailto:cisco-nas@puck.nether.net>>
>>
>> Subject: [cisco-nas] ISDN calls not making it to
>> NM-6DM
>>
>> Hi everyone.
>>
>> Playing around with some old hardware in a lab,
>> trying to get some ISDN calls originated from an
>> 1841 with a WIC-1B-S/T-V3 to be answered on a 3825
>> with a NM-6D and NM-CE1T1-PRI.
>>
>> Heres my config:
>>
>> controller E1 1/0
>> pri-group timeslots 1-6,16
>> !
>> interface Serial1/0:15
>> no ip address
>> encapsulation ppp
>> isdn switch-type primary-net5
>> isdn incoming-voice modem 64
>> isdn bchan-number-order ascending
>> !
>> interface Group-Async0
>> ip unnumbered Loopback0
>> ip nat inside
>> ip virtual-reassembly in
>> encapsulation ppp
>> peer default ip address pool dialup
>> async mode interactive
>> no keepalive
>> ppp authentication chap callin
>> group-range 2/0 2/5
>> !
>> line 2/0 2/5
>> modem InOut
>> autoselect ppp
>> !
>>
>> And heres what I see when an ISDN call comes in:
>>
>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX
>> <- SETUP pd = 8 callref = 0x0183
>> Bearer Capability i = 0x8890
>> Standard = CCITT
>> Transfer Capability = Unrestricted Digital
>> Transfer Mode = Circuit
>> Transfer Rate = 64 kbit/s
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> Calling Party Number i = 0x80, '0733944124'
>> Plan:Unknown, Type:Unknown
>> Called Party Number i = 0x80
>> Plan:Unknown, Type:Unknown
>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931:
>> Received SETUP callref = 0x8183 callID = 0x01E5
>> switch = primary-net5 interface = User
>> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT:
>> Interface Serial1/0:0 is now connected to
>> 0733944124 N/A
>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX
>> -> CALL_PROC pd = 8 callref = 0x8183
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX
>> -> CONNECT pd = 8 callref = 0x8183
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX
>> <- CONNECT_ACK pd = 8 callref = 0x0183
>>
>> So as far as I can tell the call comes in and
>> establishes fine, but even with "debug modem" and
>> a couple of other debugs on, I dont see any
>> activity regarding connection to a modem. When I
>> dial in from an analogue modem it works just fine.
>>
>> FWIW I am using the 3825 as a PSTN simulator as
>> well. The 1841 is connected to a VIC2-2BRI-NT/TE
>> emulating network, and a dialpeer connects calls
>> to a VWIC2-2MTF-E1 which is also emulating network
>> and is connected to the NM-CE1T1-PRI.
>>
>> Wondering if any one can provide any pointers to
>> help me out. Am I missing something obvious?
>>
>> Let me know if you require more information.
>>
>> Thanks
>> Tom
>>
>>
>>
>> _______________________________________________
>> cisco-nas mailing list
>> cisco-nas@puck.nether.net
>> <mailto:cisco-nas@puck.nether.net>
>> https://puck.nether.net/mailman/listinfo/cisco-nas
>>
>>
>>
>>
>>
>>
>>
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>> https://puck.nether.net/mailman/listinfo/cisco-nas
>>
>
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi,

On Mon, Feb 02, 2015 at 10:02:43PM +0000, Tom Storey wrote:
> Yeah, just O CONFREQs from both sides.
>
> I do see input crc/frame errors on Se1/0:0 on the 3825, and also on Di0 on
> the 1841. No errors on any of the other PRI/BRI interfaces in between
> though.
>
> Tried swapping the VIC2-2BRI in the 3825 which didnt help, but I dont have
> a spare WIC-1B to test with at the moment.

Mismatch 56k/64k channels?

gert
--
USENET is *not* the non-clickable part of WWW!
//www.muc.de/~gert/
Gert Doering - Munich, Germany gert@greenie.muc.de
fax: +49-89-35655025 gert@net.informatik.tu-muenchen.de
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi Gert.

I did come across that as a possibility to look at while debugging.

But the bearer cap (0x8890) and everything I see reported in debug isdn
q931 on all BRI/PRI interfaces on all devices indicates it has established
a 64k circuit.

Im starting to think its just not possible. Maybe the VIC doesnt properly
handle bearer caps beyond those used for voice?

I need some ISDN debugging tools. :-)

On 3 February 2015 at 08:38, Gert Doering <gert@greenie.muc.de> wrote:

> Hi,
>
> On Mon, Feb 02, 2015 at 10:02:43PM +0000, Tom Storey wrote:
> > Yeah, just O CONFREQs from both sides.
> >
> > I do see input crc/frame errors on Se1/0:0 on the 3825, and also on Di0
> on
> > the 1841. No errors on any of the other PRI/BRI interfaces in between
> > though.
> >
> > Tried swapping the VIC2-2BRI in the 3825 which didnt help, but I dont
> have
> > a spare WIC-1B to test with at the moment.
>
> Mismatch 56k/64k channels?
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
> //
> www.muc.de/~gert/
> Gert Doering - Munich, Germany
> gert@greenie.muc.de
> fax: +49-89-35655025
> gert@net.informatik.tu-muenchen.de
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Late, but yeah, no data on VIC!
http://www.cisco.com/c/en/us/support/docs/voice/digital-ccs/7960-2isdn-bri-vic.html

—Eric

> On Feb 3, 2015, at 5:46 AM, Tom Storey <tom@snnap.net> wrote:
>
> Hi Gert.
>
> I did come across that as a possibility to look at while debugging.
>
> But the bearer cap (0x8890) and everything I see reported in debug isdn q931 on all BRI/PRI interfaces on all devices indicates it has established a 64k circuit.
>
> Im starting to think its just not possible. Maybe the VIC doesnt properly handle bearer caps beyond those used for voice?
>
> I need some ISDN debugging tools. :-)
>
> On 3 February 2015 at 08:38, Gert Doering <gert@greenie.muc.de <mailto:gert@greenie.muc.de>> wrote:
> Hi,
>
> On Mon, Feb 02, 2015 at 10:02:43PM +0000, Tom Storey wrote:
> > Yeah, just O CONFREQs from both sides.
> >
> > I do see input crc/frame errors on Se1/0:0 on the 3825, and also on Di0 on
> > the 1841. No errors on any of the other PRI/BRI interfaces in between
> > though.
> >
> > Tried swapping the VIC2-2BRI in the 3825 which didnt help, but I dont have
> > a spare WIC-1B to test with at the moment.
>
> Mismatch 56k/64k channels?
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
> //www.muc.de/~gert/ <http://www.muc.de/~gert/>
> Gert Doering - Munich, Germany gert@greenie.muc.de <mailto:gert@greenie.muc.de>
> fax: +49-89-35655025 <tel:%2B49-89-35655025> gert@net.informatik.tu-muenchen.de <mailto:gert@net.informatik.tu-muenchen.de>
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Re: ISDN calls not making it to NM-6DM [ In reply to ]
Ah I'd seen that, but was thinking that it must have meant you couldnt
initiate data calls from it.

Bugger!

Oh well, at least I know it wasnt something I was missing config wise. Will
have to look at what other options Ive got for switching data calls.

Thanks for everyones help.

Tom

On 6 February 2015 at 16:01, Eric K <ericknudson@gmail.com> wrote:

> Late, but yeah, no data on VIC!
>
> http://www.cisco.com/c/en/us/support/docs/voice/digital-ccs/7960-2isdn-bri-vic.html
>
> —Eric
>
> On Feb 3, 2015, at 5:46 AM, Tom Storey <tom@snnap.net> wrote:
>
> Hi Gert.
>
> I did come across that as a possibility to look at while debugging.
>
> But the bearer cap (0x8890) and everything I see reported in debug isdn
> q931 on all BRI/PRI interfaces on all devices indicates it has established
> a 64k circuit.
>
> Im starting to think its just not possible. Maybe the VIC doesnt properly
> handle bearer caps beyond those used for voice?
>
> I need some ISDN debugging tools. :-)
>
> On 3 February 2015 at 08:38, Gert Doering <gert@greenie.muc.de> wrote:
>
>> Hi,
>>
>> On Mon, Feb 02, 2015 at 10:02:43PM +0000, Tom Storey wrote:
>> > Yeah, just O CONFREQs from both sides.
>> >
>> > I do see input crc/frame errors on Se1/0:0 on the 3825, and also on Di0
>> on
>> > the 1841. No errors on any of the other PRI/BRI interfaces in between
>> > though.
>> >
>> > Tried swapping the VIC2-2BRI in the 3825 which didnt help, but I dont
>> have
>> > a spare WIC-1B to test with at the moment.
>>
>> Mismatch 56k/64k channels?
>>
>> gert
>> --
>> USENET is *not* the non-clickable part of WWW!
>> //
>> www.muc.de/~gert/
>> Gert Doering - Munich, Germany
>> gert@greenie.muc.de
>> fax: +49-89-35655025
>> gert@net.informatik.tu-muenchen.de
>>
>
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>
>
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi,

On Fri, Feb 06, 2015 at 10:01:03AM -0600, Eric K wrote:
> Late, but yeah, no data on VIC!
> http://www.cisco.com/c/en/us/support/docs/voice/digital-ccs/7960-2isdn-bri-vic.html

Now that is... interesting, because together with a PVDM2-12DM, they
document the VIC2-2BRI as compatible to handle incoming *modem* calls...

http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/interface-cards/product_data_sheet0900aecd8050918e.html

... I admit that I had never imagined that they wouldn't do basic ISDN
stuff then...

MMmmh. Now how does on terminate ISDN S0 "with modem and ISDN" on
a 2800/2900 these days?

There's a HWIC-4B-S/T, which in turn is *not* listed as compatible
with the PVDM2-12DM...

(Yes, I know that the PVDM2-xDM is EOLed. Doesn't help me fulfill
customer requirements, which is "robust ISDN+Modem dial-in into $Box",
which is currently services by 3640s with NM-8B-S/T + NM-DM - totally
fossilized stuff, but very reliable...)

gert

--
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fax: +49-89-35655025 gert@net.informatik.tu-muenchen.de
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Gert, if you want to support archaic protocols, nothing beats fossilized
hardware.

Looks like eBay has 3640 chassis for US$47.95, NM-8B-S/T from US$19.50
etc ... buy a few spares and you should be set until the PSTN is
dismantled :)

Cheers,

Aaron

----

On 2/6/2015 12:09 PM, gert@greenie.muc.de (Gert Doering) wrote:
> (Yes, I know that the PVDM2-xDM is EOLed. Doesn't help me fulfill
> customer requirements, which is "robust ISDN+Modem dial-in into $Box",
> which is currently services by 3640s with NM-8B-S/T + NM-DM - totally
> fossilized stuff, but very reliable...)
>
> gert

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Re: ISDN calls not making it to NM-6DM [ In reply to ]
Hi,

On Fri, Feb 06, 2015 at 01:55:10PM -0700, Aaron Leonard wrote:
> Gert, if you want to support archaic protocols, nothing beats fossilized
> hardware.
>
> Looks like eBay has 3640 chassis for US$47.95, NM-8B-S/T from US$19.50
> etc ... buy a few spares and you should be set until the PSTN is
> dismantled :)

Indeed, this is what I've been doing so far :-) - but I *do* worry that
one day one of the components will have aged enough to actually reach
true "end of life", so I did some research whether something only
historic would be available as "more modernized version"...

(Getting the *right* NM-8B-S/T is actually tricky, as only module
versions newer than <something> will interoperate with the NM-DM - one
of my customers decided to throw out all their old NM-8Bs, so of course
I grabbed all the good ones :-) - and only 2 out of 12 or so were
recent enough)

And yeah, I do find grey hair in my beard these days ;-)

gert

--
USENET is *not* the non-clickable part of WWW!
//www.muc.de/~gert/
Gert Doering - Munich, Germany gert@greenie.muc.de
fax: +49-89-35655025 gert@net.informatik.tu-muenchen.de
Re: ISDN calls not making it to NM-6DM [ In reply to ]
Aloha, Found this on

http://www.cisco.com/c/en/us/support/docs/dial-access/integrated-services-digital-networks-isdn-channel-associated-signaling-cas/10307-bri-3640.html?referring_site=bodynav

The BRI Modules which can communicate with DM-xDM :

•Cisco BRI network module (use one of the following):

â—¦NM-4B-S/T - Four-port ISDN BRI network module, minimum version
800-01236-03

â—¦NM-4B-U - Four-port ISDN BRI with integrated NT-1 network module, minimum version 800-01238-06

â—¦NM-8B-S/T - Eight-port ISDN BRI network module, minimum version
800-01237-03

â—¦NM-8B-U - Eight-port ISDN BRI with integrated NT-1 network module, minimum version 800-01239-06

.. but you seldem see the version number on ebay.

> (Getting the *right* NM-8B-S/T is actually tricky, as only module versions newer than <something> will interoperate with the NM-DM - one of my customers decided to throw out all their old NM-8Bs, so of course I grabbed all the good ones :-) - and only 2 out of 12 or so were recent enough)


Mahalo,
Juergen.


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