I have a site in Singapore currently using this service in their current phone system. We are planning to move it over to our 2821 and give them IP phones, but I need some guidance.
I have done many domestic T1 PRI connections to voice gateways, but never an E1 or ISDN 10.
I know I will need to configure the controller E1, but what are the specifics for the timeslots? (Guessing: pri-group timeslots 1-10)?
Along with that, do you know what the D channel is? I have seen ISDN 30 configurations in Australia, using pri-group timeslots 1-31, and that uses channel 15 for the D channel.