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

[Nick Thompson]

I wound up settling on 8.3.5ES10 which solved all of the issues that I was having with my installation...  I'm going to avoid the 8.4 line of code for a little while longer...

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: Scott Voll [mailto:svoll.voip at gmail.com]
Sent: Friday, October 24, 2008 12:38 PM
To: Ryan Ratliff
Cc: Nick Thompson; James Buchanan; Dave_Landsiedel at bobcat.com; cisco voip
Subject: Re: [cisco-voip] What would cause DTMF not to go through

any news on a new firmware for a fix?  the bug says there are some fixed Firmwares but i don't see any posted yet.  Can you get us an ETA on release?

More and more users are calling in on the problem.

Thanks

scott
On Mon, Oct 13, 2008 at 7:03 AM, Ryan Ratliff <rratliff at cisco.com<mailto:rratliff at cisco.com>> wrote:
CSCsv04751 was filed by one of the CME guys to track this.   It looks like the phones are sending the dtmf digits in-band as well as out of band and this is what causes the double keypresses.   It also appears this behavior changes depending on if you are using the handset/headset/speakerphone.


-Ryan


________________________________
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 Ryan Ratliff
Sent: Monday, October 13, 2008 9:51 AM
To: 'Nick Thompson'; 'Scott Voll'; 'James Buchanan'

Cc: Dave_Landsiedel at bobcat.com<mailto:Dave_Landsiedel at bobcat.com>; 'cisco voip'
Subject: Re: [cisco-voip] What would cause DTMF not to go through

I was doing some work on this Friday and there is definitely some noise generated in-band by sccp phones on 8.4(1).  If you take a packet capture and listen to the audio it sounds like a "blurp" sound (very technical, I know) every time  you press a dtmf digit.  I think what is happening is that this combined with the in-band dtmf generated by the gateway (dtmf should be out of band from phone to cucm to the gateway) can cause all kinds of wierd problems on the receiving end.

I'm digging now to see if there's a bug already opened.  If not there will be one by the end of the day.


-Ryan


________________________________
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 Nick Thompson
Sent: Sunday, October 12, 2008 10:15 PM
To: Scott Voll; James Buchanan
Cc: Dave_Landsiedel at bobcat.com<mailto:Dave_Landsiedel at bobcat.com>; cisco voip
Subject: Re: [cisco-voip] What would cause DTMF not to go through

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> [mailto: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<mailto:cisco-voip-bounces at puck.nether.net>; Dave_Landsiedel at bobcat.com<mailto: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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