[Freeswitch-users] Longtime working user's phone now disconnecting

Sean Devoy sdevoy at bizfocused.com
Sun Jan 10 07:24:54 MSK 2016

Thank you for the reply Anthony.

It appears you are correct OF COURSE!  I dug in deeper to the setup (and dialplan, etc) for that user’s extension.  I found a difference from the working models that I should have seen before even posting, sorry.

The extension did not have
<variable name="sip-force-contact" value="NDLB-connectile-dysfunction"/>
And all the working extensions do have it.  I added it.

I don’t know what else happens when that is set, but I know it makes my extension re-register every 30 seconds (which seems excessive to me).   I think that is probably just masking the underlying problem where the Comcast router is dropping the NAT connection after some time period.  I am thrilled to have it working, but there must be a cleaner fix.  Is there at least a way to extend that 30 second time to 60, 90, 120?

Can you direct me to a good resource to help me understand this parameter better?

Thank you again,

From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Anthony Minessale
Sent: Thursday, January 07, 2016 12:40 PM
To: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
Subject: Re: [Freeswitch-users] Longtime working user's phone now disconnecting

You probably want to go a little higher up in the excerpt and even better if the sip trace was enabled as well.
ending bridge by request from write function just means one of the legs is hungup and is no longer accepting writes so the bridge ends.
You are missing the place where the leg hangs up, most likely from some sip transaction.  Look for lines with "Hangup" in them.

On Tue, Jan 5, 2016 at 12:16 PM, Sean Devoy <sdevoy at bizfocused.com<mailto:sdevoy at bizfocused.com>> wrote:

I have an emotional user who now claims her phone fails at least once a week and everyone else’s must be, but no one has ever reported it!  My very favorite kind of complaint – entirely founded in emotion, myth and misunderstanding.

In any case, I called her.  I spent 4:11 listening to her complain, but not be able to sight a single instance I could research.  Then <CLICK> the connection was lost.  She claims she did not hang up, the line went dead.  Perhaps there is an actual problem after all.

I will add at least one of the errors she reported would lead me to believe there is a hardware (or power) issue on her desk phone (Cisco SPA540).  I did look on the phone after the dropped call and the phone did NOT reboot and said it was still registered from 45 minutes earlier.

Just FYI: The problems are reported to have started when COMCAST replaced their DSL and they got new external IP addresses.  The phones are NATed.

Can someone tell me what [BREAK], [NORMAL CLEARING], then “port ending bridge by request from write function” means?
Just for background, this was an internal ext to ext dial in separate “domains” on my FS server.  NO IVR involved.

Here is a log excerpt:
12:32:12.178673 [DEBUG] sofia_glue.c:3429 sofia/external/220 at redacted.com<mailto:220 at redacted.com> Setting audio receive payload in Re-INVITE to 0
12:36:23.318530 [DEBUG] switch_core_session.c:1016 Send signal sofia/external/sip:10 at redacted_too:port [BREAK]
12:36:23.338532 [NOTICE] sofia.c:737 Hangup sofia/external/sip:10 at redacted_too:port [CS_EXCHANGE_MEDIA] [NORMAL_CLEARING]
12:36:23.338532 [DEBUG] switch_ivr_bridge.c:569 sofia/external/sip:10 at redacted_too:port ending bridge by request from write function
12:36:23.338532 [DEBUG] switch_channel.c:3187 Send signal sofia/external/sip:10 at redacted_too:port [KILL]
12:36:23.338532 [DEBUG] switch_core_session.c:1351 Send signal sofia/external/sip:10 at redacted_too:port [BREAK]
12:36:23.338532 [DEBUG] switch_ivr_bridge.c:645 BRIDGE THREAD DONE [sofia/external/220 at redacted.com<mailto:220 at redacted.com>]
12:36:23.338532 [DEBUG] switch_ivr_bridge.c:675 Send signal sofia/external/sip:10 at redacted_too:port [BREAK]
12:36:23.338532 [DEBUG] switch_ivr_bridge.c:645 BRIDGE THREAD DONE [sofia/external/sip:10 at redacted_too:port]
12:36:23.338532 [DEBUG] switch_ivr_bridge.c:675 Send signal sofia/external/220 at redacted.com<mailto:220 at redacted.com> [BREAK]

Any ideas where I should look next or even what the problem is?
NOTHING has changed on the server for months and months.  The FS version is rather out of date, but has been stable for a long time.

Thanks in advance.

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