Multiple sip registration

When I register multiple sip accounts on a snom320 and try to make outgoing calls, no matter which extension I choose, it always dials through the last sip registration. If i register extension 100 through 105 on the phone, my outgoing sip account shows as 105.

Anyone knows why?

Thanks!!!

Do different accounts have different IP addresses or ports? Search Asterisk users mailing list archive. There was a recent long thread about a similar issue - almost identical subject.

thanks for the reply.
they have same ip and port different sip reg 202@192.168.1.30

Hi,
try a different port for each extension (5060, 5061, etc…)