[Freeswitch-users] FS - DTMF and Cisco CME/UCE

[Ognjen Seslija]

Why use INFO when it's only method I know Cisco won't speak (2833, kpml,
sub/notify)?

Here's the CME snippet for FS trunk I have. FS sends 2833 tones to CME btw.

dial-peer voice 100 voip
 description ** TO FS **
 destination-pattern .T
 b2bua
 session protocol sipv2
 session target sip-server
 session transport udp
 dtmf-relay rtp-nte
 codec g711alaw
 no vad




On Mon, May 23, 2011 at 4:07 AM, Mike Taylor <mtaylor at employees.org> wrote:

> Hi,
>
> This is driving me nuts.
> I have a Cisco CME (a few actually) where I cannot get DTMF to work.
>
> Does someone happen to have the magic recipe of SIP/Dialplan profiles and
> Cisco config to make DTMF <relay> work?
>
> I spent several very very painful days trying to get RFC2833 to work, using
> FS to try and generate the tones itself. I ended up with all sorts of codec
> mismatches, delay,distortion and some really mangled DTMF tones…
>
> So, now I'm back to;
>
> PSTN----CiscoGW----<external>----FS----<internal>----<CUST PABX>---Phone
>
> Where <CUST PABX> is 3 CMEs that won't talk DTMF
> 30+ other vendor's gateway's that WILL do DTMF…
>
> Context External and internal are both set to dtmf-type info (or dtmf_type
> info)
>
> DTMF works FROM the Cisco GW towards our network, doesn't
>
>
> So, does anyone have a magic solution?
>  Because Cisco TAC say they see DTMF being sent (as rtp-nte), when I need
> INFO or in-band.
>
>
>
> Thanks,
> Mike
>
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