Thanks for your prompt response. Yes, these are both public IP's coming from the same router. We are not behind firewall and our NAT is disabled.
We did try deleting the defaultip, and used dtmfmode to rfc388 along with canreinvite=no...same problem. Do we need to have the following in sip.conf:
; Register
2345@mysipprovider.com with authname 2345 at mysipprovider.com at sip provider as 1234 here:
register => 2345:password@mysipprovider.com/1234
Also, do we need to have our softphone's IP in sip.conf?
What does the Asterisk CLI indicate:
-Sep 14 18:34:45 NOTICE[4168]: chan_sip.c:9856
handle_response_peerpoke: Peer 'spa2001' is now REACHABLE! (77ms /
1000ms)
== Refreshing DNS lookups.
== Refreshing DNS lookups.