[cisco-voip] Can't use Telstralink conferencing service - DTMF tone duration?

[Jonathan Charles]

Okay, change the dtmf-relay from H245 to none and try sending it in-band,
however, if you are using a low-bandwidth codec (G.729, etc...) this will
distort the DTMF.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_command_reference_chapter09186a0080087c0a.html#1021746

As Scott said, the alternative is to use MGCP, which is pretty adept at
transmitting DTMF, but that presumes a CallManager that may or may not be
present.

Also, this is receiving or sending DTMF on the gateway? (IOW, are you
sending DTMF out a PRI, or receiving it from a PRI?)

 What is the config on the voice-port for the PRI?


Jonathan

On 12/20/06, Robert Kulagowski <bob at smalltime.com> wrote:
>
> Jonathan Charles wrote:
> > Under the voip dial-peer... dtmf-relay
>
> I should have looked further in the config; this is what we have:
>
> dial-peer voice 2 voip
>   destination-pattern 78....
>   progress_ind setup enable 3
>   progress_ind progress enable 8
>   voice-class codec 1
>   voice-class h323 1
>   session target ipv4:x.x.x.x
>   dtmf-relay h245-alphanumeric
>   fax-relay ecm disable
>   ip qos dscp cs3 signaling
>   no vad
> !
> dial-peer voice 3 voip
>   preference 1
>   destination-pattern 78....
>   progress_ind setup enable 3
>   progress_ind progress enable 8
>   voice-class codec 1
>   voice-class h323 1
>   session target ipv4:y.y.y.y
>   dtmf-relay h245-alphanumeric
>   fax-relay ecm disable
>   ip qos dscp cs3 signaling
>   no vad
>
>
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