Nortel Networks 553-3001-211 manual 824 of 894 NTRB21 DTI/PRI/DCH Tmdi card

Page 824 of 894 NTRB21 DTI/PRI/DCH TMDI card

Cross-connect – Level 1 (DSX-1), or LD-1. Equalizers are switch selectable through dip-switches. The settings are shown in Table 259.

Table 259

NTRB21 switch settings

		Switch Setting
Distance to Digital	1	2	3	4
Cross-Connect	DCH F/W	(LEN 0)	(LEN 1)	(LEN 2)
0 - 133 feet	Off	Off	Off	On
133 - 266 feet	Off	On	On	Off
266 - 399 feet	Off	Off	On	Off
399 - 533 feet	Off	On	Off	Off
533 - 655 feet	Off	Off	Off	Off

Receiver

The receiver extracts data and clock from an incoming data stream and outputs clock and synchronized data. At worst case DSX-1 signal levels, the line receiver operates correctly with up to 655 feet of ABAM cable between the card and the external DS-1 signal source.

553-3001-211 Standard 2.00 September 2004