Technical information

Frequently Asked Questions (FAQs)

ISDN PRI (MTPRI-HD23B and MTPRI-HD30B) FAQs

Q23. What switch types does the CommPlete support?

A23. DMS-100, 5ESS, NI-2, NTT, 1TR6, EuroISDN (NET 5), VN2 and VN3, Japan

NTT.

Q24. Can I allow users to place an analog modem call and/or an

ISDN call to the unit?

A24. Yes. Arrange to have a single line and your users can dial in with either analog

modems or ISDN T/As. The unit will automatically detect and handle each call as

required.

Q25. Do I have to set SPID and directory numbers for each B-

Channel, similar to the way the BRI products work?

A25. No, SPID and Directory numbers are not required, since the single D-channel

handles all the call setup and teardown into the telco network.

Q26. When I order a PRI line from the telco, can I order a PRI line

without T1 ?

A26. No, you must order a T1 line with PRI signaling. PRI signaling is an additional

charge to the T1. On the other hand, when you order a PRI line, the monthly

charge for the PRI line doesn't include the T1. So, be sure to ask your telco

representative about these options.

Q27. What ordering information do I need?

A27. Ordering a circuit for PRI is basically the same as for a T1. Specify Extended

Super Frame (ESF) and B8ZS, then terminate at the de-mark with a “smart jack”.

If you'll be dialing in and out, then you will need to tell your telco that it's a “two-

way” circuit, and that you need 23 B-channels and one D-channel.