I have a plain T1 from XO for voice. (not PRI). I am planning a migration to Asterisk, can I receive caller ID via this?
This really depends on the T1…but the short answer is no for Asterisk. You’ll need to upgrade to a PRI. Technically speaking NI2 is the only protocol to support CID w/ name. Quick rules of thumb:
– for pots service CID can be delivered between the 1st and 2nd rings
– for T1’s you can’t get CID (traditional 4 wire e&m circuits)
– for PRI’s you should run NI2 to make sure you get number & name delivery
Hope this helps…