ADTRAN 1200212L1, User Manual

Page: 98 / 172

Chapter 8. Dial Backup Configuration
8-8 DSU IQ User Manual 61200212L1-1
Number of B-channels (NUM B-CHANNELS)
Select the number of B-channels supported by the ISDN service.
Select 2 if bonding is used.
SPID 1 and 2
Enter the service profile identifier (SPID) for both B-channels. The
SPID is a sequence of digits identifying ISDN terminal equipment
to the ISDN switch when more than one ISDN set has been
attached to the same central office line. The SPID is assigned by the
telco when the ISDN line is installed and normally resembles the
phone number.
Only the Lucent 5ESS switch is capable of recognizing a point-to-
point configuration, eliminating the need for a SPID. All other
switch types require a SPID.
LDN 1 and 2
Enter the LDNs for both B-channels. The LDNs are assigned by the
telco when the ISDN line is installed.
DCE Options
The DCE O
PTIONS
field is available when the External DCE option
card is installed.
Interface Type
Select the connector type for the DCE interface ( EIA-232 and V.35).
DBU Bit Rate
Set to the operating speed of the DBU interface (0-1536 kbps).
Call Screening
If C
ALL
S
CREENING
is set to E
NABLE
, the DSU IQ will only accept
incoming calls from the numbers entered in fields 1 through 5.
Calls from any other number or from an unidentifiable number are
rejected (for BRI card only).