Nortel Networks 553-3001-211 manual Receiver, Connector pinout, Dch F/W, Len, Fgnd

Page 706 of 894 NTAK09 1.5 Mb DTI/PRI card

extend from the card to the DSX-1 or LD-1. Equalizers are switch selectable through dip-switches. The settings are shown in Table 227.

Table 227

NTAK09 switch settings

		Switch Setting
	1	2	3	4
Distance to Digital 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 will operate correctly with up to 655 feet of ABAM cable between the card and the external DS1 signal source.

Connector pinout

The connection to the external digital carrier is through a 15-position male D-type connector. See Table 228.

Table 228

DS-1 line interface pinout for NTBK04 cable (Part 1 of 2)

From 50-pin MDF
connector	To DB-15	Signal name	Description
pin 48	pin 1	T	transmit tip to network
pin 23	pin 9	R	transmit ring to network
pin 25	pin 2	FGND	frame ground

553-3001-211 Standard 2.00 September 2004