User's Manual

Page 168 of 332 Chapter 12 — Installing the circuit cards
553-3021-209 Standard 3.00 April 2000
• NTRB21 1.5 Mbit DTI/PRI
• NT6D70 SILC (when used as a clock controller)
Note:
The digital trunk cards can be installed only in slots 1-3 of the
Main Chassis.
If you want to install digital trunk cards, refer to the following documents for
information:
• 1.5 Mbit DTI/PRI Guide (553-3011-310)
• 2.0 Mbit DTI/PRI Guide (553-3011-315)
•
ISDN BRI Administration and Maintenance Guide
(553-3011-311)