> The reversal detection is a complete waste of time. Totally > unnecessary. Pointless. A line break detector would have much > more use, as it would give a reliable disconnect detection on > many lines. Hmm.. but wouldn't reversal detection help those people who are in the UK and want to receive caller ID?
I guess you could watch out for the CPE alert tone that's issued after the line reversal, but I have some vague recollection that maybe you need to provide a load so that wetting current can flow or something after the reversal. SIN 242 rings a bell - it's a BT technical document that describes the protocol exactly. All the SINs are available at www.sinet.bt.com Hmm.. reading up, you could probably get away with just monitoring for the alert tone then? I bow to the greater knowledge of the true techies on the list.. I guess European caller ID is one of those big problems, with lots of countries using lots of different protocols - I think some scandinavian countries even use on-hook DTMF.. Easy answer: Get a digital circuit! :-) _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
