I have CME 8.6 running on a 2801 router. There are two 9971 phones (SIP only) registered as well as two analog phones connected via a dual-port FXS card. I have a SIP trunk between the CME and CUCM at the main office. I can 4-digit dial between these 4 phones fine. Additionally, the analog phones can 4-digit dial to phones at the main office as well as make and receive external calls, so that tells me that my dial-peers are configured properly.
The 9971 phones, on the other hand, simply respond with a fast-busy when you try to call out. When you call via DID to one, it rings, but then when you pick it up there is a fast-busy.
Here are some configuration snippets:
voice service voip ip address trusted list ipv4 10.152.111.128 255.255.255.248 allow-connections sip to sip sip bind control source-interface Loopback0 bind media source-interface Loopback0 registrar server expires max 3600 min 120 voice class codec 1 codec preference 1 g711ulaw
voice class cause-code 1
voice register global
source-address 10.11.20.227 port 5060
load 9971 sip9971.9-1-1SR1
authenticate realm all
create profile sync 0512702122126068
Perhaps there is more info that would be relevant, but for the moment that's what I'll paste in. Please let me know if you have thoughts.
Solved! Go to Solution.