I am currently using custom script (working with IOS 16.6.3 but it doesn't work with higher firmware so I have to try Cisco ITS Script). I have try the its-CISCO.2.0.3.0.tcl (original, no edit) but when I call in it always reply "Call will be disconnected".
My current config:
dial-peer voice 22 voip
description Inbound calls from ITSP VNPT to HOHN
service welcome_hohn_test
session protocol sipv2
incoming called-number 02432045361
voice-class codec 1
dtmf-relay rtp-nte
no vad
!
service welcome_hohn_test flash:/its-CISCO.2.0.3.0.tcl
paramspace english language en
paramspace english index 0
paramspace english location flash:
param operator 4953
paramspace english prefix en
Hope you will find the answer.