I’m losing my hair here. At my age, that’s really NOT recommended.
I’ve just picked up a Panasonic KX-TGP550 T04 phone. Got it to replace my Siemens Gigaset S675IP. I love the features of the Siemens, but the user interface is killing me. I’ve dropped more calls trying to conference a 3rd party in than I care to count! I picked up the Panasonic to solve this.
The problem I am having is that I can’t get multiple lines to register at the same time. Actually, it’s a bit more specific. I can’t get 2 extensions on the same PBX to register at the same time. The phone works fine with multiple handsets and multiple lines as long as the voip lines are from different pbxes. As soon as I configure the extensions on the same server, only one will register at a time. The other is stuck at “registering”. Outgoing calls only work on one of the lines, and incoming calls ring for both extensions - but only behave as if they are on the one registered line.
If I do a “sip show peers” on the pbx, I can see both extensions, and they are both listed as registered as “OK”. Both list the same IP address and ports - just like my Seimens one did. So the server seems to think both extensions are registered, but the phone obviously doesn’t. Is this normal that 2 extensions will have the same IP address and port on a multi-line phone?
Network wise, the phone sits behind a Cisco e4200 which has had no configuration changes made since I unplugged the seimens S675IP. This e4200 sits behind another NAT router before it makes it out to the internet.
I haven’t done anything to configure any sort of specific NAT transversal - as I didn’t before. I’m willing to - but quite frankly - the Panasonic admin UI is about as intuitive as the daily use Seimens UI!