
C-1
Appendix C
Ordering ISDN Lines in the United States
ISDN Basic Rate Interface (BRI) Lines
When ordering ISDN BRI lines for use in the United States, note the following:
• Configure the B1 and B2 channels for data only.
• Configure the D channel for signaling only.
Table C-1 lists the parameters to set for AT&T 5ESS switches. Table C-2 lists the
parameters to set for Northern Telecom DMS-100 switches. Your phone company
might ask you to provide this information when you order your BRI lines.
Table C-1. BRI Parameters for AT&T 5ESS
Parameter Value Notes
Terminal Type A
Number of CSD 2
Number of CSV 0 or 1 1 if an ISDN phone was connected to the
S/T bus
Number of call appearances 1
Display is Y/N No
Ringing/Idle Call
Appearances
Idle Default for terminal type A
Autohold is Y/N No Default for terminal type A
Onetouch is Y/N No Default for terminal type A
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