I have this same problem with Cisco Phones. Someone will try and call an
extension and asterisk will say "Can't create SIP channel" and I immediately
do "sip show peers" and the phone in question still has an IP listed.
If I know for fact that my 10 phones will never change IP addresses, how can
I make the registration/expire times something alot larger, like 24 hours?
-Matthew
Hi Matthew,
From what I understand, the expiry time is set by the phone. If the phone do not set the expiry time during registration, asterisk will use the default time of 3600 seconds. I do not have Cisco phones, so you might want to try to see if you can set the expiry time in the Cisco phone.
**Note: The above are base on my investigation done previously, please take it with a pitch of salt.
Perhaps someone can verify my findings.
Regards, Chin
----- Original Message ----- From: "HengWee Chin" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, December 01, 2004 8:36 AM Subject: [Asterisk-Users] SIP expiry time
> Hi,
>
> I notice that SJPhone is registering to asterisk with an expires of 120
> secs. However, when I invoke the command "sip show peer [sip id]". I
notice
> that the output indicates the expires 427 and the expiry is 900. Can
someone
> explain these numbers to me?
>
> I also notice that just before SJPhone re-register, when I try to make a
> call to the SJPhone, asterisk will complain that it is not able to find
the
> URL to sip. When I issue the command "sip show peers", I can still see the
> URL in the list of sip registered. After SJPhone re-register, asterisk is
> able to call again. Any Ideas how come there is this behaviour? A bug?
>
> Regards,
> Chin
>
>
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