This document shows how you would configure 4 different sites running UCx with a Coordinated Dialing Plan (CDP). Diagram below provides an overview of the trunk routes between each of the sites.
host=192.168.1.251
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.252
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.253
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.250
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.252
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.253
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.250
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.251
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.253
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.250
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.251
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
host=192.168.1.252
type=friend
qualify=yes
insecure=very
dtmfmode=rfc2833
context=from-trunk
canreinvite=nonat
username=voipaccountname
secret=voipaccountpassword
type=friend
qualify=yes
insecure=port,invite
dtmfmode=rfc2833
host=dallas.voip.ms
context=from-trunk
disallow=all
allow=ulaw
fromuser=voipaccountname
canreinvite=nonat
sendrpid=yes
trustrpid=yes
nat=yes
voipaccountname:[email protected]:5060