[Asterisk-Users] "Registered SIP '202' ... expires 1800". Why does it expire

[Olle E. Johansson]

Tony Hoyle wrote:
> Olle E. Johansson wrote:
> 
>> SIP phones need to re-register every once in a while to tell the server
>> where it can be reached. If you have a soft phone on a laptop that you
>> move from network to network - home, office, airport, Barnes & Noble etc
>> - you want to be reached on the IP address you use there. SIP
>> registration keeps the server up-to-date with your hectic life :-)
> 
> 
> Which is kinda annoying because grandstreams (at least 1.0.5.23 firmware
> anyway) don't do that...  I have to powercycle the one on my desk once
> an hour if I want it to ring on incoming calls otherwise asterisk
> 'forgets' about it (the cisco in the other room seems to be fine).
> 
> I'd love an option to work around that...
If you are not roaming, set host=<ipaddress of the phone> and disable
registration in the phone. Then Asterisk will always know where the
phone is.

/O