Pardon my ignorance in advance - I'm just the sales guy.
Scenario: New installation for November, 8-user UC520. System has already been purchased, assume update to the latest CCA version. Customer will have 7 PSTN circuits incoming on a T1 PRI. Telco provider plans deliver all voice circuits within the building to the UC520 via RJ11, I'm assuming PSTN signaling. I'm planning to connect 4 incoming circuits to the UC520. Provider has a block of phone numbers set aside, let's say 789-123-5555 through -5581. I've got to get this figured out quickly so that business cards can be ordered for staff. Other 3 voice circuits will be dedicated to analog communication - mechanical systems modem, fire alarm, and security system.
Customer wants to set up DID for certain offices. Preferred numbering:
main number: 789-123-5555. Need a hunt group so if the main number is in use, incoming calls will roll over to the next open circuit.
DID for Staff#1: 789-123-5556
DID for Staff#2: 789-123-5557
DID for Staff#3: 789-123-5558
DID for Staff#4: 789-123-5559
Other staff positions (8 handsets/vm boxes) will only need internal extensions, no DID required
Fax line: 789-123-5560
ATM: needs DID assigned for remote access, but can pick up any available outgoing circuit.
So, I need confirmation on the following:
1. That a hunt group of three circuits can be mapped by the provider to -5555 without conflicting with the other DID requests.
2. That the UC520 can map the five DID numbers to the internal extensions, using a total of four incoming circuits.
3. That the provider's plan to deliver the four incoming circuits internally via analog RJ11 is a suitable method, or should they deliver the PRI directly to the UC520 via a VWIC card? The three analog lines can then be delivered internally an ATA card?
4. That I can assign a DID number to the analog ATM modem, yet it will pick up any available outgoing circuit by prefixing the call with 9.
Any and all feedback is welcome - thanks in advance.
I read your post a couple times to see if I could read between the lines, but I think you will need to provide more information about what your PSTN connection actually is. Your description of a PRI delivered via RJ11 with 4 circuits for phones system and 3 for other use doesn't make sense to me..
I'll take a shot at answering your questions though-
1. There are no hunt groups with PRI. In general, you can receive as many calls on the same number as you have available circuits.
2. Yes, but if you only have 4 circuits then you can only receive any combination of 4 calls at a time.
3. analog RJ11 and PRI don't correlate. Perhaps you are describing a T1 and IAD (channel bank) that converts to analog? This part is really important as it will determine what hardware is required and what options you have..
4. This depends on the answer to #3, but in general yes you can have a modem via an FXS port or ATA that can be reached via DID number and can dial out by dialing 9.
Please tell us who is providing the PRI and everything you know about it and we should be able to answer your questions accurately.