[asterisk-bugs] [JIRA] (ASTERISK-28162) [patch] need to reset DTMF last sequence number and timestamp on voice packet with marker bit

[Alexei Gradinari (JIRA)]

Alexei Gradinari created ASTERISK-28162:
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             Summary: [patch] need to reset DTMF last sequence number and timestamp on voice packet with marker bit
                 Key: ASTERISK-28162
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28162
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Resources/res_rtp_asterisk
    Affects Versions: 13.23.1
            Reporter: Alexei Gradinari


The marker bit set on the voice packet indicates the start
of a new stream and a new time stamp.
Need to reset the DTMF last sequence number and the timestamp of the last END packet.

If the new time stamp is lower then the timestamp of the last DTMF END packet the asterisk drops all DTMF frames as out of order.

This bug was caught using Cisco ip-phone SPA50X  and codec g722.
On SIP session update the SPA50X resets stream indicating it with market bit and a new timestamp is twice smaller then the previous.




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