Hi,
TO start with, I do not have a SPA303. But I have a couple of SPA301's and I've seen dozens of SPA112's, and if SPA303 is remotely similar to any of them, I don't see why this should not work:
in the SPA303 SIP settings of the Ext[1 2 or 3], there should be a SIP port setting; (SPA112 has Line1 and Line2 SIP settings separate)
you MUST set a DIFFERENT SIP (listening) Port on every Ext ON THE SPA303. Period.
these are LISTENING ports. The ports your SPA303 listens ON. They have nothing to do with how the SPA303 contacts ports ON the servers.
there is no discrete setting for server SIP port on the SPA301 or SPA112 that I have.
So per your quote again,
means the SPA303 still sends the SIP dialog to lavoip to THEIR port 5060, but tells them that IT is on port 5060
There may be 2 things wrong here:
- ensure your FreePBX is listening on a default port (5060) first - go to Asterisk SIP settings to check that
- ensure your FreePBX Extension knows, that the SPA303 listens for it on port 5062 - go to the Extensions settings to check that. While at it, check you have same transport, same DTMF and same credentials on both FreePBX and SPA303 settings.
Same as for the Ext1, the lavoip server is really listening on port 5060 probably, but the SPA303 tells it, that IT is on port 5062 (some servers can show you this information while the extension is subscribed) (you can find out on SPA303's voice status page, which port is the server talking do you FROM)
Hope this helps & is more or less accurate 