Nortel Networks AN/DC manual Synchronous Cabling Requirements, WAN Interface Order No, Table D-6

Requirements for European Operation

Synchronous Cabling Requirements

Refer to Figure D-1 through Figure D-3 and Table D-6 through Table D-8 for synchronous interface cabling information.

Note the following compliance requirements:

•V.28 compliance requires the use of an Order No. 7837 cable

•V.35 compliance requires the use of an Order No. 7220 cable

•X.21 compliance requires the use of an Order No. 7224 cable

15 Feet

Pin 1 Pin 15

Pin 16	Pin 30
Pin 31	Pin 44

44-position D-Sub plug with screw locks (ground shield connected to backshell)

Pin 1 Pin 13

Pin 14 Pin 25

25-position D-Sub plug receptacle with screw locks

(ground shield connected to backshell)

AN0081A

Figure D-1.			Cable 7837 (V.28 Compliant)
	Table D-6.		WAN Interface (Order No. 7837)
	Nortel Networks Termination			Remote Termination
	Pin	Signal		Pin	Signal
	1	Frame Ground		1	Frame Ground
	2	Send Data+		2	Send Data
	3	Receive Data+		3	Receive Data
	4	Request to Send+		4	Request to Send
	5	Clear to Send+		5	Clear to Send
	6	Data Set Ready+		6	Data Set Ready
	8	Data Terminal Ready+		20	Data Terminal Ready
					(continued)
312410-A Rev 00						D-3