I have what I think a strange situation. I have two locations each location with a SoundStation IP 6000 on each location
1) The SoundStation IP 6000 at "Location 1" is able to make and receive calls with no problem.
2) The SoundStation IP 6000 from "Location 2" is able to make and receive calls with no problem at "Location 2"
3) Either SoundStation IP 6000 phones is not able to make calls but they are able to receive calls "Location 2".
4) Other VoIP Phone work at "Location 2" – only the SoundStation IP 6000 is not able to place calls.
If I connect the phones outside the network they both work fine are "Location 2".
BTW: the phones are been connected to the same PBX "3CX" using the same provisioning (MAC Address). the only deference is the network where they are connected.
Any help is greatly appreciated.
again the FAQ should be consulted as it contains:
Oct 7, 2011 Question: How can I check out the Registration Status of my Phone?
Resolution: Please check => here <=
Usually if you are unable to make or receive a call the phone is most likely simply not registered. The Icon for the line will show this as an easy identification.
Additional troubleshooting would involve wireshark.
This is also explained in the FAQ.