[cisco-voip] DTMF Relay Problem

[ccieid1ot]

Can we see the configs?

duy
ccie #27737 voice

tmobile g2
On Dec 26, 2010 10:33 AM, "Nikola Stojsin" <nikolas at networkmakers.com>
wrote:
> Hello Guys -
>
>
>
> I am having a problem with a small office that has just moved to a new
> location/circuit; it runs CallManager 4.3.x and Unity 4.2.1 (to be
upgraded
> in a couple of months!), with a Cisco 2811 as a MGCP gateway with a single
> PRI.
>
>
>
> In their old location, they ran on a regular smartjack PRI without any
> issues; now they are on a flexible circuit (6 bonded T1s, via ISP's
on-site
> 3845), which still provides a PRI interface. Everything works fine, apart
> from a DTMF relay problem on calls from PSTN. Basically, I am seeing
> duplicate DTMF entries in the Port Status Monitor - in other words, if
> someone pressess 9892, the port monitor shows 9988992; and then, after
about
> five to seven seconds, or a forward to a subhandler, no DTMFs are being
> forwarded at all. (Incidentally, the same company has two more locations
> with the same type of flexible circuit - with no problems whatsover.)
>
>
>
> Now, I have checked CSCso87127, and have upgraded gateway's IOS to
> 12.4(15)T14; DMTF relay is set up for out-of-band in the MGCP
configuration.
> I am considering switching the gateway to H323 - and have opened a trouble
> ticket with the ISP.
>
>
>
> Has anyone seen this behavior before and/or has a suggestion?
>
>
>
> Thank you, as always,
>
> Nikola
>
>
>
>
>
> P. S.: Happy holidays to everyone!
>
>
>
>
>
> -------------------------------------------
>
> Nikola Stojsin
>
> PhD CCIE #12888
>
> <mailto:nikolas at networkmakers.com> nikolas at networkmakers.com
>
> http://www.networkmakers.com
>
> -------------------------------------------
>
>
>
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