| Robert Kulagowski 2006-12-20, 7:11 pm |
| Jonathan Charles wrote:
> 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...0a.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?
This is a phone in Sydney sending a call out of a PRI in Sydney. Would
G.729 even be an issue in this situation?
I think that we need the dtmf-relay to stay as-is for access to Unity,
correct? The over-the-WAN codec is set for G.729.
We can't do MGCP because of call preservation, plus the CMs are in the U.S.
The voice-port is:
voice-port 0/1/0:15
translation-profile incoming PREFIXDID
input gain -3
output attenuation -6
echo-cancel coverage 24
echo-cancel erl worst-case 0
playout-delay minimum low
no comfort-noise
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