Something changed today. I can connect to nodes, and can see tones being sent from the asterisk console when hitting "connect' on the management console. Instead of getting the original rejection notices, I'm getting the following warnings, but don't know if it's anything to worry about:
[May 23 10:42:21] WARNING[6714]: chan_iax2.c:10127 iax2_do_register: REGISTER-LOG: Sending registration request for '23302'
[May 23 10:42:21] WARNING[6709]: chan_iax2.c:7690 registry_rerequest: REGISTER-LOG: registry rereqquest
I'll re-connect my repeater tonight and see if sound is getting through.