OBI100 SIP URI call problem

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DavidNewton01:
To help others who may want to use OBI device to receive SIP URI calls, here I would like to summarize my tests on this issue. I use SP1 as example:

1. SP1 registered to external SIP servers: SIP URI calls do not have problem. Unlike azrobert's experience, the external asterisk server is ok for me. I tried an external asterisk server and Sipsorcery.

2. SP1 registered to a local asterisk server:

    a. With default setting (X_DiscoverPublicAddress: checked), SIP URI calls do not work for CallCentric, SPA3000, Linphone and another OBI device, but are ok if the calls are from another asterisk server.

    b. As azrobert found out, with X_DiscoverPublicAddress unchecked and X_PublicIPAddress filled with external IP address, SIP URI calls work fine. This solution does not work for dynamic external IP.

As workaround for me, I have my SP1 registered to local server and SP2 registered to an external server, and forward the SIP URI calls to SP2 sip port.

As observed by hwittenb and azrobert, the problem is caused by OBI handling external IP wrong. It seems that the main problem is in x_DiscoverPublicAddress which can not detect the right external IP when it is registered to local IP address. Another problem is that the URI box under AuthPassword may not properly programmed. Hopefully OBI can fix these bugs in future firmware.

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