BLF\CallPark Subscriptions Fail after several days. - Printable Version +- Yealink Forums (http://forum.yealink.com/forum) +-- Forum: IP Phone Series (/forumdisplay.php?fid=4) +--- Forum: Phone specific topic (/forumdisplay.php?fid=12) +--- Thread: BLF\CallPark Subscriptions Fail after several days. (/showthread.php?tid=1730) |
BLF\CallPark Subscriptions Fail after several days. - Bryan Nelson - 05-13-2014 03:28 AM Hello, We are seeing some consistent behavior in both the T2x series and T-4x series of phones(T-3x possibly, but we don't have many in production), where working BLF\CallPark subscriptions to the asterisk server stop working after a long(few days) period of time. From packet captures, I can see that the phones simply stop sending the SUBSCRIBE requests to the server. Sending a force reboot notify restarts the phone, and SUBSCRIBE requests resume normally. During the time when the BLF\CallPark SUBSCRIBE messages are not being sent, I am still seeing SUBSCRIBE requests for MWI, so not all SUBSCRIBE functionality is broken. I am unable to see anything obvious in the phone's logs that indicate why they stop sending the SUBSCRIBE, and the last thing on our server is a successful NOTIFY send to the phone for a state update. So, I was wondering if anyone else was experiencing this, or if anyone knows of behavior in the phone firmware that would blacklist a BLF SUBSCRIBE from being used after a certain number of failures(for whatever reason). We do require authentication for BLF, so every SUBSCRIBE is initially rejected with a challenge to provide password authentication. This process normally works fine, but I'm wondering if there is an internal counter for 401 messages.... --Bryan RE: BLF\CallPark Subscriptions Fail after several days. - Yealink Support - 05-13-2014 10:00 AM Please send your trace to your distributor or support@yealink.com. They can help you to deal with issues. RE: BLF\CallPark Subscriptions Fail after several days. - habile - 06-17-2014 04:04 PM (05-13-2014 03:28 AM)bnelson Wrote: Hello, All I can say is that with my T48 (35.72.0.10) and Asterisk (11.something) I do not see this issue. What is Subscribe Period(seconds) set to in Account->Advanced? Does asterisk show the subscriptions in 'sip show subscriptions' ? C. |