> So DIDs are sharing available channels. Not necessarily -- you are confusing two separate concepts:
1: DIDs are a mechanism for having more than one phone number that can be routed to one or more voice channels and for identifying which number was dialled when a call is presented by the CO. Depending on the part of the world you are in and the technology used, this mechanism may be referred to as DDI or MDN (Multiple Directory Numbers). Sharing available channels is the ability to have incoming calls (to the same number or different numbers) routed by the CO to more than one channels depending on channel availability and the rotation algorithm used by the CO. This is usually referred to as "rotary", "overlines", or "call forward busy". > In particular for ISDNs are DIDs sharing available channels? Let's deconstruct this question into its component parts. (a) Can ISDN support DID numbers? Technically yes. Whether or not your telco will provide this functionality is a question only your telco can answer. We have seen telcos that would not provide DIDs (or MDNs as they are usually called with respect to BRI circuits) on ISDN BRI circuits but would on PRIs. (b) Can ISDN support "overlines". Technically yes. Your telco may, as above, be less cooperative. Again, our experience is that the possibilities with PRIs are greater than BRIs. In short -- you will have to talk to your service provider (or change service providers) to get what you want. Hope this helps. George Pajari www.netVOICE.ca www.ip-centrex.ca _______________________________________________ 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