Does anyone know where I can find the different features between 5ESS vs. NI protocols? I am currently using Cisco AS5xxx gateway and when I set my as5xxx to NI protocol and when I busyout the channel, service provider cannot see my channels are being busyout. BUT, when I set my as5xxx to 5ess, they can see my busyout channels but I cannot transfer international call. Any idea?
Thanks.
Cheng