[asterisk-bugs] [JIRA] (ASTERISK-27674) chan_sip: RTP framing issues on outgoing calls

[Jean Aunis - Prescom (JIRA)]

Jean Aunis - Prescom created ASTERISK-27674:
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             Summary: chan_sip: RTP framing issues on outgoing calls
                 Key: ASTERISK-27674
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27674
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/General
    Affects Versions: 15.2.1, 14.7.4
            Reporter: Jean Aunis - Prescom


When placing outgoing calls with chan_sip, RTP packetization time is not honoured, whether it is received from the remote endpoint in an SDP "ptime" attribute, or it is forced by configuration in the "allow" line.

*Case 1 : ptime received from the remote endpoint*
Given I have configured a peer with "autoframing=yes"
When the peer replies to an INVITE with an SDP containing "a=ptime:40"
Then RTP is still sent with a packetization time of 20 ms

*Case 2 : packetization configured in sip.conf*
Given I have configured a peer with "allow=alaw:40"
When the peer replies to an INVITE without specifying "ptime"
Then RTP is still sent with a packetization time of 20 ms

Please note that the outgoing INVITE contains the proper "ptime" attribute in the SDP, the only problem is the RTP packetization.



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