Nortel BCM 3.7, Manual

Page: 874 / 1004

874 ISDN Programming
N0008589 3.3
Program ISDN Equipment
PRI modules support various applications that are enabled by PRI.
Terminal equipment for BRI Cards
ISDN devices and terminals connected to the Business Communications Manager system must be
configured under Services, Telephony Services, Loops. You choose directory numbers for ISDN
equipment from a predetermined range of DNs (597 to 694). Any of the ISDN DNs can be
assigned to an S loop, but each can only be assigned to one loop and a single device. If you require
more than the default 32 devices, you can use the Companion range of DNs (565 to 596). If you
need these extra DNs, change the DN type from
Companion to ISDN and DECT .
Devices on an S loop (BRI cards only)
Terminal equipment using an S loop must be assigned an ISDN directory number (ISDN DN).
This allows the TE to be assigned lines and to communicate with other devices connected to the
Business Communications Manager system. Each DN can be assigned to only one TE and one
loop.
You assign ISDN DNs to S loops from the Telephony Services subheading, under Loops , DNs on
Loop , Assign DNs . Each S loop can be programmed with eight ISDN DNs, but you cannot exceed
a total of 58 ISDN DNs for the Business Communications Manager system.
S or LT Loop DN
Once you have assigned ISDN DNs to a loop, designate one of the DNs as a Loop DN. The Loop
DN acts as a main ISDN DN and completes the configuration of the loop.
The ISDN terminal equipment (TE) on the loop is also programmed with its ISDN DN. See the
instructions that come with the ISDN device for information about how to program it to recognize
its assigned DN. Most devices will require both a terminal service profile identifier (terminal
SPID) and a DN, and some will require two terminal SPIDs and two ISDN DNs. The SPID used
with the device should not be confused with a SPID used for network connections using a T loop.
To create a terminal SPID for a device, add at least two zeros to the end of the ISDN DN. Add
more zeros to the beginning or end of the ISDN DN until you have the length of SPID required by
the TE. For example, if an ISDN telephone requires a six-digit SPID and has a DN of 667, its SPID
is 066700. If the same TE requires a minimum of ten digits, the SPID is 0000066700.
Most ISDN terminals require a five-digit SPID. An ISDN PC card usually requires a ten-digit
SPID. Follow the directions that come with the ISDN device to program it with a SPID and ISDN
DN.