[asterisk-users] 183 Session in Progress. Disconnecting channel for lack of RTP activity

Jean Aunis jean.aunis at prescom.fr
Mon Dec 19 02:33:24 CST 2016

This means the remote end was not sending any audio stream, or the audio 
stream was not received by Asterisk. The problem may have many different 
reasons, but often it is a network-related issue.

Le 16/12/2016 à 21:19, Dmitriy Serov a écrit :
> Today I faced a problem. Please help to solve this problem.
> Asterisk 13.7 (chan_pjsip) & Zyxel Keenetic Plus DECT, firmware 
> v2.06(AAGJ.9)C1
> Outbound call from Zyxel Keenetic (pjsip endpoint) to PSTN (pjsip trunk).
> Call using early media (183 Session in progress) and rtp_timeout=10.
> After 10 seconds: [2016-12-16 13:53:15] NOTICE[6654] 
> res_pjsip_sdp_rtp.c: Disconnecting channel 'PJSIP/xxx-0000027b' for 
> lack of RTP activity in 10 seconds
> SIP dump is attached.
> According to [1] before called user agent send OK or ACK there is one 
> way SDP.
> In sip dump (attached) i didn't find such SIP packets. Whether that 
> call was canceled due to RTP inactivity?
> Any help is welcome.
> [1] https://www.ietf.org/proceedings/46/I-D/draft-ietf-sip-183-00.txt

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