[cisco-voip] What would cause DTMF not to go through

[Nick Thompson]

I am also running into some DTMF issues at an installation I am currently doing utilizing 7962s on the latest firmware (SCCP42.8-4-1SR1S) as well as 7942s on firmware SCCP42.8-4-1SR1S.  However, I am using MGCP on my gateways.  I've got various users running into issues with unrecognized digits, multiple digit presses, among other things.  I'm actually glad to see a few others are having this issue as the reports at this install have been popping up a little more often.

Has anybody tried a downgrade of the phone firmware?

Thanks.

Nick Thompson
Senior Network Engineer
Corporate Technologies, LLC
E-Mail: nick.thompson at gocorptech.com<mailto:nick.thompson at gocorptech.com>
http://www.gocorptech.com/

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Scott Voll
Sent: Thursday, October 09, 2008 3:25 PM
To: James Buchanan
Cc: cisco-voip-bounces at puck.nether.net; Dave_Landsiedel at bobcat.com; cisco voip
Subject: Re: [cisco-voip] What would cause DTMF not to go through

more wide spread.  They are G711, but thus far it's just one location (multiple users) but they are the only ones that are using 7962 phones and firmware 8.4.1.<http://8.4.1.>  Also.  I see a bunch of bugs for DTMF but they are all related to SIP / CTI but these users are not using either of those.

Any more ideas?

Scott
On Tue, Oct 7, 2008 at 12:05 PM, James Buchanan <jbuchanan at ctiusa.com<mailto:jbuchanan at ctiusa.com>> wrote:

The rtp-nte is used typically for SIP trunks. H245-alphanumeric is what you would typically use. Have you determined this to be for one specific user or is it more widespread?



From: cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net> [mailto:cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>] On Behalf Of Scott Voll
Sent: Tuesday, October 07, 2008 2:01 PM
To: Dave_Landsiedel at bobcat.com<mailto:Dave_Landsiedel at bobcat.com>
Cc: cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>; cisco voip
Subject: Re: [cisco-voip] What would cause DTMF not to go through



H323



What's the difference between



 dtmf-relay h245-alphanumeric



and



dtmf-relay rtp-nte h245-alphanumeric

??



CMM blade with IOS 12.4(15)T4



Thanks



Scott

On Tue, Oct 7, 2008 at 11:09 AM, <Dave_Landsiedel at bobcat.com<mailto:Dave_Landsiedel at bobcat.com>> wrote:

If using dial peer voice voip via a H323 gateway make sure you have the following line in that dial peer.

  dtmf-relay rtp-nte h245-alphanumeric

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