Ross Beer wrote:
Hi Joshua,

I've started getting the same issue with registrations to a quiet test box:


    [2016-02-14 10:20:12] WARNING[13927]: pjsip:0 <?>: sip_transactio
    Unable to register REGISTER transaction (key exists)
    -- Added contact 'sip:ENDPOINT@<IP ADDRESS>:8300' to AOR 'ENDPOINT'
    with expiration of 60 seconds
    Contact ENDPOINT/sip:ENDPOINT@<IP ADDRESS>:8300 has been created

The phone is registering every 60 seconds and is doing so successfully
without packet loss therefore the transaction should be closed as soon
as the phone successfully registers. My question is therefore why does a
transaction still exist?

How can I help diagnose this issue?

Filing an issue[1] with the exact information so it can be hopefully reproduced and isolated, with either a fix or explanation. If you want to try to isolate it yourself you'd need to look into res_pjsip_registrar, follow the traffic, and get an idea of what is going on.

https://issues.asterisk.org/jira

--
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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