[asterisk-bugs] [JIRA] (ASTERISK-26565) chan_unistim on 11, 13, 14 placing call on hold temporarily locks up set

[Jason (JIRA)]

Jason created ASTERISK-26565:
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             Summary: chan_unistim on 11, 13, 14 placing call on hold temporarily locks up set
                 Key: ASTERISK-26565
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26565
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_unistim
    Affects Versions: 14.1.1, 13.12.1, 11.24.1
         Environment: Debian Linux x86 Intel, Debian Linux ARMh/ARMl
            Reporter: Jason


With a Nortel i2002 (also tested on unknown i2001) places or receives a call, and an audio path is brought up (as in, audio is transmitted and/or received from an application or another channel), eg: a call is established, pressing the hold button properly sets up a bridge of MOH to the other side (they hear music), a caller in this example. At this point, the Nortel set is locked. Icons indicate a call is on hold, but no further buttons effect any function. Looking at debug messages, when the switchhook is pressed, even repeatedly, a message is generated on every press: 
"WARNING[2075] chan_unistim.c: Close call without sub"
Interestingly, when the other end of the call hangs-up, the icon on the Nortel set indicates such, but remains locked. The UDP/RTP ports are still held at this point. But, placing a call to the same locked-up set, from any functioning channel, unlocks the set, and CLID etc are there, and ringing away. Answering the call, (on the Nortel set) it's all back to normal, and after parties hang up, both/all UDP/RTP ports are properly released. 
(Note: ports being released is dependent on the patch from Igor which fixed this on 7 November, 2016.) This is repeatable on three Nortel sets, acoss releases. 



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