Below the configuration of the GK, and how I see that should be done on the CUSP . do you have any remarks?:
H.323
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gatekeeper
zone local zone-default tt.tn 172.20.10.250
zone local zone-gateways tt.tn
zone local zone-cvp tt.tn
zone local zone-outbound tt.tn
zone prefix zone-default 1...
gw-type-prefix 4#* hopoff zone-outbound
gw-type-prefix 1#* hopoff zone-default default-technology
gw-type-prefix 2#* hopoff zone-cvp
gw-type-prefix 3#* hopoff zone-gateways
no shutdown
SIP PROXY
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conf t
sip network netA
end network
conf t
sip dns-srv
trigger condition in-netA
sequence 1
in-network netA
end sequence
end trigger condition
trigger condition out-netA
sequence 1
out-network netA
end sequence
end trigger condition
server-group sip group cvp.tt.tn netA
element ip-address 172.20.10.6 5060
element ip-address 172.20.10.7 5060
element ip-address 172.20.10.8 5060
element ip-address 172.20.10.9 5060
end server-group
server group sip group gateways.tt.tn netA
element ip-address 172.20.10.238 5060
element ip-address 172.20.10.240 5060
element ip-address 172.20.10.241 5060
element ip-address 172.20.10.242 5060
element ip-address 172.20.10.243 5060
element ip-address 172.20.10.244 5060
element ip-address 172.20.10.245 5060
element ip-address 172.20.10.246 5060
element ip-address 172.20.10.247 5060
element ip-address 172.20.10.248 5060
element ip-address 172.20.10.249 5060
end server-group
element group sip group outbound.tt.tn netA
element ip-address 172.20.10.239 5060
end server-group
server group sip group default.tt.tn netA
element ip-address 172.20.10.35 5060
element ip-address 172.20.10.36 5060
element ip-address 172.20.10.37 5060
end server-group
route table cvp-route-table
key * response 404
key 1# target-destination default.tt.tn netA
key 2# target-destination cvp.tt.tn netA
key 3# target-destination gateways.tt.tn netA
key 4# target-destination outbound.tt.tn netA
end route table
SIP GATEWAY
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dial-peer voice 2 voip
session target ipv4:SIP-Proxy@IP
protocol sipv2