Best way to connect 2 Obis on Local Network
QBZappy:
Anything inside a lan would not need any port forwarding.
azrobert:
I discovered the following by accident:
If OBi#1 is calling OBi#2 and
SP2 on OBi#2 is registered to an Asterisk based system like PBXes.org or PBX in a Flash
The call completes WITHOUT any audio problems.
Can anybody explain the above?
Ostracus:
Quote from: azrobert on February 26, 2013, 09:05:04 pm
I discovered the following by accident:
If OBi#1 is calling OBi#2 and
SP2 on OBi#2 is registered to an Asterisk based system like PBXes. org or PBX in a Flash
The call completes WITHOUT any audio problems.
Can anybody explain the above?
What about #2 to #1?
azrobert:
Quote from: Ostracus on February 26, 2013, 09:34:00 pm
What about #2 to #1?
OBi#2 to OBi#1 still has one-way audio.
If OBi#1 is also registered to an Asterisk based system then the call is successful.
azrobert:
Quote from: hwittenb on January 28, 2013, 09:19:10 pm
I finally got my wireshark packet trace more or less working correctly and I now see what is happening with the one-way audio when I call the OBi110 from the OBi202 over my local network. When the OBi110 starts up its rtp voice packet stream instead of sending the packet stream to the OBi202 local network address it sends its rtp packet stream to the (correct port number) at the local network's external ip address. The router discards the packet and you have one-way audio. To circumvent the problem, I setup a unique rtp port range for the OBi202 and in my router forwarded that unique port range to the OBi202 and the call works correctly.
I was thinking about what hwittenb said about the OBi sending RTP to the external IP address when I saw the following option on the OBi:
ITSP Profile B ==> SIP ==> X_DiscoverPublicAddress
I turned X_DiscoverPublicAddress off just to see what would happen and to my amazement it fixed the one-way audio problem.
My OBi#1 can call OBi#2 because SP2 on OBi#2 is registered to PBXes.org. See my reply#26.
Now OBi#2 can call OBi#1 with the above change to OBi#1.
Anyone know if this setting will cause problems?
Everything seems to work with this change.
Inbound and outbound calls work with my registered provider on SP2.
I can call the OBi externally using me.dyndns.com:5061
Warning:
After you make this change you end up with two registrations on your SP2 provider. The first is the registration you had before the change and will go away when the registration time period expires. I don't think this will cause problems, but I'm not an expert. It didn't cause problems with my provider.
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