[Asterisk-Users] Delayed voice for 10 secs

[Carlos Alberto Bernat Orozco]

Hi List !!

I have a lot a questions about this incredible tool but short is my time to
learn it, so I apologize if my last question was too general. I got another
more especific trouble. I administrating an ISP and I have my Asterisk
installed on a server for testing my network performance. I followed the
quick-start tutorial provided by voip-info.org (which I think it's very
useful) and configured two SJphones as extensions. My network is HFC type
and the users surf the Internet by a Cable Modem (Motorola). When I tried
this 2 softphones, the voice was delayed for 10 secs aprox. and the next
warning is jumping on my screen:

WARNING[26673]: dsp.c:1422 ast_dsp_process: Inband DTMF is not supported on
codec gsm. Use RFC2833

I know I must change codecs in order to get the voice more fluency but I
don't know yet if I have to configure it on the Asterisk server (on sip.conf)
or somewhere else (on the SJphones). Can you give me some info about it? I
would appreciate a lot

Thanks

Carlos Bernat
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