[cisco-voip] DTMF relay with Verizon SIP Trunk?

[Erin Mikelson]

A collegue of mine spent 32 hours on the phone with TAC and Verzion due to a similar issue.

 

I don't remember the specifics of what he was running into, but in short, this is what he required:

 

You need 12.4.22(T2)

You need H.323 faststart which requires MTP

You need to configure MTP resources in the router as software

You need to make sure your MRGs are set to use the above MTP and Not any other hardware transcoders or software MTPs.

 

Good Luck?
 > 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Thu, 28 May 2009 12:02:13 -0400
> From: "Jason Aarons (US)" <jason.aarons at us.didata.com>
> To: <cisco-voip at puck.nether.net>
> Subject: [cisco-voip] DTMF relay with Verizon SIP Trunk?
> Message-ID:
> <C1FE15183DA37645BC0633BC604E44F00EF56C88 at USNAEXCH.na.didata.local>
> Content-Type: text/plain; charset="us-ascii"
> 
> I assume this is the correct DTMF relay for a Verizon SIP trunk.
> 
> 
> 
> Using CallManager 7.0(2), no MTP resources, SIP Trunk to CUBE 12.4(24)T
> with SIP to Verizon.
> 
> 
> 
> At first we had below, then I realized DTMF was working;
> 
> dial-peer voice 797 voip
> 
> no dtmf-relay h245-alphanumeric h245-signal cisco-rtp
> 
> dtmf-relay rtp-nte digit-drop
> 
> 
> 
> 
> 
> Does faxing/VG224 have any dtmf-relay requirements? I understand they
> were using rtp-nte digit-drop but changed it for some unknown reason to
> h245-alphanumic which I understand is only for H323.
> 
> 
> 
> 
> 

_________________________________________________________________
Hotmail® has a new way to see what's up with your friends.
http://windowslive.com/Tutorial/Hotmail/WhatsNew?ocid=TXT_TAGLM_WL_HM_Tutorial_WhatsNew1_052009
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20090529/57d43580/attachment.html>