Ordering Your ISDN PRI or T1 Line10
Provisioning an ISDN PRI connection
This section explains how to order an ISDN PRI line for your Diva Server T1/PRI
adapter.

What to order

Specify the following requirements when you place your order:
•23 B-channels + 1 D-channel
•D-channel on channel 24 (timeslot 24). Do not order NFAS (non-facility
associated signaling service), which enables you to use channel 24 as a
data-carrying B-channel.
•Layer 1 line code is B8ZS with ESF (Extended SuperFraming)
•Data rate of 1.544 Mbps
•64 kbps clear channel service which ensures calls will not be routed over
56 kbps channels
•Companding type is µ-law
•A CSU is not required (Diva supplies the function of the CSU internally).
However, you can connect to a CSU if present.
•The T1 interface number must be 0.
•The D-channel must be specified as the terminal endpoint identifier (TEI) 0.
•If the switch type is AT&T/Lucent, request that allocation of channels for
incoming calls is in descending order, high to low (23 to 1).

Information to obtain when you order

Obtain the following information when you place your order. You will need this
information to properly configure your Diva Server T1/PRI adapter.
•The type of ISDN switch your line is connected to.
•AT&T/Lucent 4ESS
•AT&T/Lucent 5ESS
•Nortel DMS-250
•Nortel DMS-100
•Nortel DMS-250
•National ISDN-2 (any switch running NI-2)
•Japan INS-1500
•Directory number assigned to the PRI line
•Line build out setting (LBO). Only if you are going to use the Diva Server's
on-board CSU.