Thanks for the suggestion. I've tried both Peer and Provider but can't seem to make it work for either.
When setup as Provider I see the following in the Advanced Error Log:
1 01/08/2008 7:29 PM WARNING chan_sip.c: Host '192.168.123.3' does not implement 'REGISTER'
2 01/08/2008 7:29 PM NOTICE chan_sip.c: -- Registration for 'admin@sip_provider_101' timed out, trying again (Attempt #1)
3 01/08/2008 7:28 PM WARNING chan_sip.c: Host '192.168.123.3' does not implement 'REGISTER'
4 01/08/2008 7:28 PM NOTICE indications.c: Removed default indication country 'us'
When setup as Peer I don't see any new entries in the Advanced Error Log when I attempt a call, but when I do the Enable Outgoing Call Diagnostics Mode it seems to go to the proper rule assigned to the Grandstream.
- It looks like they both support Ulaw, Alaw, and GSM. I have all three checked on both ends.
- I've tried many combinations of DTMF mode, but I expected RFC2833 to work.
I did post a question for Grandstream and received the following reply:
Thanks for your email. We know of no compatibility issues with any SIP based system that utilizes the RFC 3261 international standard. I have been informed that our products are likely compatible with Switchvox, as Switchvox is a Digium / Asterisk product. Grandstream has completed in-depth interoperability testing with Digium / Asterisk, a Grandstream solution partner. You will find more information about interoperability on our website at http://www.grandstream.com/interoperability.html.
Any further suggestions would be appreciated.