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Hi,
When making a call like the one below, I get double DTMF tones on the PSTN
side. DTMF tones sent from the PSTN arrives squelched on the SIP side.
SIP > Asterisk2 > IAX2 > Asterisk1 > ZAP > PSTN
SIP has been configured to use rfc2833 on both the SIP endpoint and the
Asterisk. SIP endpoint also suggests a payload value of 101.
Sending DTMF inband instead of via rfc2833 however eleminates the double DTMF
but squelched DTMF is still present in the reverse direction. SIP on Asterisk
was still configured as rfc2833 though.
In the setup below we do not experience double DTMF from SIP to PSTN but DTMF
is still squelched from PSTN to SIP. SIP is configured for rfc2833 on both
the endpoint and on Asterisk in this example.
SIP > Asterisk1 > ZAP > PSTN
It sounds to me like there's a bug here somewhere?
- --
Regards,
Tais M. Hansen
ComX Networks
Tel: +45-70257474
Fax: +45-70257374
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