[Freeswitch-users] TOO Frequent SIP Registration

[Sean Devoy]

The SIP trace shows an oddity.  The request has expires=3600, but the response from FS says expires=30.  This is happening on ALL devices that have the latest CISCO firmware.  Can you see anything wrong with the registration request:

   ------------------------------------------------------------------------
recv 767 bytes from udp/[69.137.35.208]:1024 at 18:59:53.382917:
   ------------------------------------------------------------------------
   REGISTER sip: [my domain name]  SIP/2.0
   Via: SIP/2.0/UDP 69.137.35.208:1024;branch=z9hG4bK-b2eec5e;rport
   From: "Ann-Marie" <sip:11@[my domain name]>;tag=86dec25c650ffef4o0
   To: "Ann-Marie" <sip:11@[my domain name]>
   Call-ID: d1a1e2df-34f61b38 at 192.168.2.11
   CSeq: 10545 REGISTER
   Max-Forwards: 70
   Authorization: Digest username="11",realm="[my domain name]",nonce="6d8f48f6-0d40-4f18-8a87-4b961f7b7881",uri="sip: [my domain name]",algorithm=MD5,response="c73d90489df58e17dad9a9d3b1b06865",qop=auth,nc=00000010,cnonce="4c9c7235"
   Contact: "Ann-Marie" <sip:11 at 69.137.35.208:1024>;expires=3600
   User-Agent: Cisco/SPA504G-7.5.5
   Content-Length: 0
   Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER, UPDATE
   Supported: replaces

   ------------------------------------------------------------------------
send 614 bytes to udp/[69.137.35.208]:1024 at 18:59:53.386375:
  ------------------------------------------------------------------------
   SIP/2.0 200 OK
   Via: SIP/2.0/UDP 69.137.35.208:1024;branch=z9hG4bK-b2eec5e;rport=1024
   From: "Ann-Marie" <sip:11@[my domain name]>;tag=86dec25c650ffef4o0
   To: "Ann-Marie" <sip:11@[my domain name]>;tag=tpUU52gppFZrj
   Call-ID: d1a1e2df-34f61b38 at 192.168.2.11
   CSeq: 10545 REGISTER
   Contact: <sip:11 at 69.137.35.208:1024>;expires=30
   Date: Wed, 10 Jun 2015 18:59:53 GMT
   User-Agent: FreeSWITCH-mod_sofia/1.2.22+git~20140309T212137Z~65fed130e5~64bit
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: path, replaces
   Content-Length: 0


From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Michael Jerris
Sent: Wednesday, June 10, 2015 1:41 PM
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] TOO Frequent SIP Registration

Likely relates to us detecting them as nat.  Take a look at the registrations, do they say NAT?  To confirm why you would look at the sip trace to see whats going on with the registration, my guess would be sip ALG on the client side messing up the traffic.

On Jun 10, 2015, at 1:30 PM, Sean Devoy <sdevoy at bizfocused.com<mailto:sdevoy at bizfocused.com>> wrote:

Hi everyone,

Forgive my lack of knowledge here.  I have a multi-tenant server setup and oddly everything is working correctly!  Working correctly isn’t odd, writing when everything is ok is odd.

For one of my domains, all of the phones re-register about every 30 seconds.  The log is filled with messages like:
sofia_reg.c:1532 SIP auth challenge (REGISTER) on sofia profile 'external' for [43@<snip>]

On the phones I changed the “Reg Min Expires” to 300 and they disappeared from registration!!
Also, the phones are registered, I can call them and their status web page says next registration is xx (30 or less) seconds.

So …
How often show registered phones re-register?
How/Where do I set it?
Why only one of my domains?  (This domain may be the only one to get the latest firmware in the phones).

For extra points does this relate to NAT Keepalive at all?

I did google this but the only registration expiration info I can find is on gateways, not phones.


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