SIP phones not registering with Asterisk 1.4

I just upgrade to Asterisk 1.4.25 from 1.2 and now our Grandstream BT200 phones are not registering. I’ve tried using a static IP and dynamic and neither work.

sip show peers just shows (Unspecified) under Host when using DCHP for the phones. I also updated the firmware, but that didn’t help either. They worked perfectly fine with Asterisk 1.2. I’m running CentOS 5.3 on a Sun Ultra20. Any ideas as to what’s wrong?

Thanks.

Hi

And the sip debug says ??? and is the bind address correct ?

Ian

sip debug says nothing. I turned sip debug on and rebooted the phones and nothing showed on the console. The bind address is correct. The phones register with Asterisk 1.2 and 1.6, but not with 1.4.