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New Contributor

Adjusting SIP proxy server registration refresh rate


I have an Adtran 908e 3rd Gen that I have a SIP transparent proxy setup on. Everything seems to be working correctly, only I can not seem to set the server registration refresh rate.

I have the following set:

sip proxy register rate-adaption

sip proxy register rate-adaption server-expires 3600

sip proxy register rate-adaption user-expires 300

but no matter what, the registration is being sent back to the SIP server every 30 seconds.

I see the following:

ADT908E#sh sip proxy registration

                              - Grant -     Last Server     Next Server        

User                   Reg  Server   User   Registration    Registration   Flags

---------------------- --- -------- ------ --------------- --------------- -----

xxxxxxxxxx         Yes       30     30 Nov 16 19:11:46 Nov 16 19:12:16  -RT-

The Polycom phone itself is set to 3600 as a default.  After making the changes to the rate-adaption, I have rebooted both the phone and the router, but have had no luck.

Thank you,
Jeremy Van Bortel

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Valued Contributor II
Valued Contributor II

Re: Adjusting SIP proxy server registration refresh rate

The server expire time can be over ridden based on what the server sends back in the 200 OK.

Do the following:

Enter debug sip stack messages

Then enter

sip trunk-registration force-register

then look at the RX 200 OK from the sip server and at the Expires header. Here is example below, you can see that it is set to 3600, So even if you request 3600, the sip server can over ride it with a smaller value.

13:25:38.881 SIP.STACK MSG Rx: UDP src= dst=

13:25:38.881 SIP.STACK MSG SIP/2.0 200 OK

13:25:38.881 SIP.STACK MSG From: <sip:5509631001@;transport=UDP>;tag=4fc694d8-7f000001-13c4-13af8f-33a00899-13af8f

13:25:38.881 SIP.STACK MSG To: <sip:5509631001@;transport=UDP>;tag=520a928-7f000001-13c4-3760d5-2d02eb2c-3760d5

13:25:38.882 SIP.STACK MSG Call-ID: 4fd68010-7f000001-13c4-51-556a5538-51

13:25:38.882 SIP.STACK MSG CSeq: 788 REGISTER

13:25:38.882 SIP.STACK MSG Contact: <sip:5509631001@;transport=UDP>

13:25:38.882 SIP.STACK MSG Expires: 3600

13:25:38.882 SIP.STACK MSG Via: SIP/2.0/UDP;branch=z9hG4bK-13af8f-4ce5c86c-df3dcfa

13:25:38.882 SIP.STACK MSG Supported: 100rel,replaces


13:25:38.883 SIP.STACK MSG User-Agent: ADTRAN_NetVanta_7100/R11.4.4.E

13:25:38.884 SIP.STACK MSG Content-Length: 0


New Contributor

Re: Adjusting SIP proxy server registration refresh rate

Hi Mark,

Here is what I see on the debug, the Expires timer is set to 3600, yet I see still the Adtran sending the registrations every 30 seconds to our sip server. My goal is to have the Adtran respond back to the Polycom phones every 300 seconds, but continue to register to our SIP server at the 3600 second rate that is set in the Polycom config.

19:27:34.768 SIP.STACK MSG     Tx: UDP src=

19:27:34.768 SIP.STACK MSG         REGISTER SIP/2.0

19:27:34.768 SIP.STACK MSG         From: "Jeremy Van Bortel"<>;tag=288D12E-DEDA39B7

19:27:34.768 SIP.STACK MSG         To: <>

19:27:34.768 SIP.STACK MSG         Call-ID: 9e88288c-ba02cb35-23e1ab4e@

19:27:34.769 SIP.STACK MSG         CSeq: 13 REGISTER

19:27:34.769 SIP.STACK MSG         Via: SIP/2.0/UDP;branch=z9hG4bKe35b72a3B910BDC

19:27:34.769 SIP.STACK MSG         Contact: <sip:xxxxxxxxxx@;adtnpxyid-1i63eb0b=14b8059>;methods="INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER"

19:27:34.769 SIP.STACK MSG         User-Agent: PolycomVVX-VVX_310-UA/

19:27:34.769 SIP.STACK MSG         Accept-Language: en

19:27:34.769 SIP.STACK MSG         Max-Forwards: 70

19:27:34.769 SIP.STACK MSG         Expires: 3600

19:27:34.770 SIP.STACK MSG         Content-Length: 0

19:27:34.770 SIP.STACK MSG    

19:27:34.805 SIP.STACK MSG     Rx: UDP dst=

19:27:34.805 SIP.STACK MSG         SIP/2.0 200 OK

19:27:34.806 SIP.STACK MSG         From: "Jeremy Van Bortel"<>;tag=288D12E-DEDA39B7

19:27:34.806 SIP.STACK MSG         To: <>;tag=aprqsdrhqoda2qg03-45cvto20000q0

19:27:34.806 SIP.STACK MSG         Call-ID: 9e88288c-ba02cb35-23e1ab4e@

19:27:34.806 SIP.STACK MSG         CSeq: 13 REGISTER

19:27:34.806 SIP.STACK MSG         Via: SIP/2.0/UDP;;branch=z9hG4bKe35b72a3B910BDC;rport=1049

19:27:34.806 SIP.STACK MSG         Contact: <sip:xxxxxxxxxxx@;adtnpxyid-1i63eb0b=14b8059>;expires=30

Thank you,


Valued Contributor II
Valued Contributor II

Re: Adjusting SIP proxy server registration refresh rate


As per our phone call, when proxy wasn’t turned on, 30 seconds would be ok with phones, but when you use transparent proxy, the sip server will need to be changed to 3600 or something way higher than 30 seconds. Then set the phone side to 300 seconds for example.

In the debug you send, the server sets the expires to 30 seconds in the CONTACT header:

19:27:34.806 SIP.STACK MSG Contact: <sip:xxxxxxxxxxx@;adtnpxyid-1i63eb0b=14b8059>;expires=30

Let us know if you have any other questions.