Unless you are looking for a specific feature, it's not so much the IOS
version, it's the IOS Feature Set. For voice, you need either the Voice,
Advances Services, or Enterprise feature set to use a router and a Voice
Gateway.
As some people have mentioned, certain features like SRST (or a specific
version of SRST) would only be available in certain IOS releases. Right
now, for voice, the popular IOS seems to be 12.4(15)T. If you have no
other preference, just grab the latest release on that train and you
should be all set.
-Chris
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Denis Pointer
Sent: Tuesday, June 02, 2009 9:52 AM
To: cisco-voip@puck.nether.net
Subject: Re: [cisco-voip] CallManager Upgrade 4.2 to 7.x
That has been my understanding as well. H.323 certainly should not
matter, MGCP might, but If it does I have not seen a compatibility
document that identifies this. Nor have I ever run into issues with
either.
SRST however there is documented compatibility at:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/compat/ccmcompmatr.ht ml#wp139350
On Tue, Jun 2, 2009 at 2:04 AM, Dew Swen <dew.swen@gmail.com> wrote:
I think its not too important unless you take into consideration SRST
fuction. Please correct me if I'm wrong guys.
Regards,
- Dew Swen
On Mon, Jun 1, 2009 at 8:09 PM, Leetun, Rob <rleetun@bouldercounty.org>
wrote:
We are currently running: Cisco 2800 Software: Version 12.4(13d)
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Mike J.
Erickson
Sent: Monday, June 01, 2009 10:46 AM
To: cisco-voip@puck.nether.net
Subject: [cisco-voip] CallManager Upgrade 4.2 to 7.x
What is the required IOS level for the Gateways(28xx series)?
Mike Erickson
Systems Engineer
ORBIT Systems, Inc.
www.orbits.net
<
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651-767-3300 helpdesk
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Denis Pointer, A. Sc. T.
Customer Systems Analyst (Senior Design)
CCVP, CCNA, CCDA
Cisco Unified Contact Center Specialist
Cisco IP Telephony Design Specialist
Cisco Unity Design Specialist
Cisco Unity Support Specialist
Cisco IP Communications Express Specialist