The running configuration of the h323 gw is:
!
voice call send-alert
voice rtp send-recv
!
voice service voip
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback pass-through g711alaw
h323
h225 h245-address on-connect
h245 tunnel disable
h245 caps mode restricted
!
[...]
dial-peer voice 1 pots
description Numerazione 911
destination-pattern 27911
no digit-strip
port 0/0/0
!
dial-peer voice 2 voip
destination-pattern .T
voice-class codec 1
session target ras
dtmf-relay h245-alphanumeric
!
dial-peer voice 3 pots
description Numerazione 922
destination-pattern 27922
no digit-strip
port 0/0/1
!
As you can see the 'voice call send-alert' command is already configured.
On a wireshark trace I take I can see an alerting go to the CUBE and then back to the gateway with the PI=8 (In-band information or an appropriate pattern is now available).
As per my understanding, the GW would expect the ringback tone from the terminating gw in-band. While I need the originating GW generating the ringback to the calling locally.
Massimiliano
