[asterisk-r2] Elastix 2 with Sangoma A104, A101 cards Axtel and Telmex

[Moises Silva]

This seems to be a bug in R2 chan_dahdi support.

The problem is that the audio that you hear during the voicemail prompt
("Por favor deje su mensaje ... blah blah"), is sent as "early media". In
MFC-R2 there is really no signal to notify whether inband information is
available, the call is just accepted. I am unsure if typically all telcos
provide alerting information, the R2 support in Asterisk has been working
without major complains for a while, so I don't want to break backwards
compatibility by adding inband media to all calls.

To fix this I think a new configuration is needed, something like
mfcr2_media_on_accept=yes or something along those lines. This would mean
when the call is accepted (but not answered) media will be passed through
instead of waiting for the answer signal. That should fix the problem with
voicemail in the telco.

You can open a bug report in issues.asterisk.org. I am pretty busy these
days, I'll take a look as soon as I have a chance. Please include the body
of this email in your bug report.

Moises Silva
Senior Software Engineer
Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON L3R 9R6
Canada
t. 1 905 474 1990 x128 | e. moy at sangoma.com


2010/12/7 Raúl Torres Duque <rtorresduque at finantek.com>

> Are there any news on this subject. From the slin files I can hear the
> Telmex prompts but we can't still hear them on the phones, it doesn't matter
> what configuration changes we made
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