I have a requirement to use the FXO port of the OBI-110 ATA as an access line for two or more IP Phones. How is the OBI-110 FXO port configured, using a Loop Start POTS line, to accept both an out going, and incoming call by an IP phone?
Fairly easy if the OBi110 and the IP phones are connected to an IP PBX. See
http://www.obitalk.com/forum/index.php?topic=57.0 and
http://www.obitalk.com/forum/index.php?topic=1157.0.
More tricky if they are not. Basically the same as discussed at
http://www.obitalk.com/forum/index.php?topic=13087.msg83877#msg83877Incoming POTS calls to the OBi110 can be forwarded to the IP addresses of the phones.
The OBi110 cannot act as a SIP proxy. If and only if the phones can make calls without being registered they can call the OBi110's IP address and reach its POTS port.