Hi 2 all,
I have a strange situation with local GSM operator:
in PRI connection sometimes 5300 getting more
digits in DTMF spontanously. For example in
number, dialed by user, 380442399740 we can get
3333333380442333399740. Problem occurs with 3, 6 most of all.
I don't know about protocols of DTMF transmittion via
GSM network and E1(PRI). IMHO, such situation can be seen
only if we have generation(in case of phone ringing DTMF tones
at the moment of dialing and we have ultra sensitive microphone
and DTMF detector). Cell phone is a small object, so we might have
such situation.
Can someone give me some advices about the DTMF receiving in Cisco?
If Cisco detects DTMF from incoming voice, how can I decrease
generation level?
I've also tested analogue GSM gateway with FXS ending at 2610
and found no such problem.
Any comments?
--
Oleg Shevtsov
Chief of NOC InterExchange Carrier
phone +380442399740
mobile +380672341642
fax +380442468910
http://www.ixcaccounting.com
I have a strange situation with local GSM operator:
in PRI connection sometimes 5300 getting more
digits in DTMF spontanously. For example in
number, dialed by user, 380442399740 we can get
3333333380442333399740. Problem occurs with 3, 6 most of all.
I don't know about protocols of DTMF transmittion via
GSM network and E1(PRI). IMHO, such situation can be seen
only if we have generation(in case of phone ringing DTMF tones
at the moment of dialing and we have ultra sensitive microphone
and DTMF detector). Cell phone is a small object, so we might have
such situation.
Can someone give me some advices about the DTMF receiving in Cisco?
If Cisco detects DTMF from incoming voice, how can I decrease
generation level?
I've also tested analogue GSM gateway with FXS ending at 2610
and found no such problem.
Any comments?
--
Oleg Shevtsov
Chief of NOC InterExchange Carrier
phone +380442399740
mobile +380672341642
fax +380442468910
http://www.ixcaccounting.com