Sorry to bother you yet again w/ a question on my seemingly endless quest to get DID trunks setup for a customer.
If you don't know anything about this issue or would rather I looked elsewhere (including the Asterisk list, I suppose), please just let me know right off the bat. I'm having great difficulty finding good resources on the web that explain this technology.
I'm still trying to examine a DID solution for this customer but don't understand how a single trunk (whatever that is--I assumed just a single pair of wires like a POTS line, but I'm thinking now it must not be) can support multiple (incoming) phones calls. I've also been told how many phone calls per trunk depends on your equipment. Do you know anything about equipment that interfaces with DID trunks? Are there special devices that do this? I think I've heard about FXS port devices supporting DID. But how could a single FXS port (say on a channel bank, or even one of the Digium PCI FXS cards) support multiple conversations? Asterisk would certainly just see it as a single channel.
Anyway, those are the questions I've got at the moment based on my (lacking) understanding of how DID (and other) trunks operate. I've got two Digium T1 cards, a Rhino Equipment FXS channel bank and a Carrier Access channel bank w/ 2 - 12 port FXO cards in it. And I'm just about ready to start testing that system, but I want to determine the additional difficulty + cost of using DID trunks for inbound calls instead of POTS lines. Oh, and the other disclaimer is, fractional T1 is not an option for me, so these'd have to be "analog" DID trunks, or whatever the default way of receiving them is.
Thanks a bunch for your help, and please refer me elsewhere if you don't have the time for this query.
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