[Freeswitch-users] No audio when dialing specific numbers

Zhang Zhengjun siyanmao.sec at gmail.com
Thu Jan 18 13:24:32 UTC 2018


Sorry for my poor english.

I am running a FreeSWITCH box on Debian Linux, connecting with China
Telecom IMS (shenzhen). I found a surprising problem that no audio when
dial to specific number (eg 10000, China Telecom custom service number).
Dial other nubmers with FreeSWITCH, like mobile phone number (tested with
China Telecom, China Unicom, China Mobile) works well. I captured the
traffic between FreeSWITCH box and IMS,  found that no media was send by
IMS. And I tested microSIP, it works well with no such a problem. I don't
konw much about SIP and other protocols, please help me. FreeSWITCH log and
captured packet from FreeSWITCH and microSIP attatched. Others can be
applied if needed.

Thanks.
FreeSWITCH version: 1.6.19-36-7a77e0b~64bit (-36-7a77e0b 64bit) (From
official repository)
Linux version: Debian GNU/Linux 8.10 (jessie)
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