ADC ETU-751C, UTU-701C REFERENCE INFORMATION, ETU-751CCONNECTOR PINOUTS

Reference Information 700-701-100-02

REFERENCE INFORMATION

This section lists the pinouts for the ETU-751C rear panel connectors and the ECA-80x connector adapters.

ETU-751C CONNECTOR PINOUTS

The pinouts for the ETU-751C rear panel connectors are listed in Table 34 and Table 35.

Table 34. D9F HDSL Line Connector Pinouts

Pin (a)	Signal	Description
4	HDSL_RING_A	HDSL Loop 1 (Ring)
9	HDSL_TIP_A	HDSL Loop 1	(Tip)
1	HDSL_RING_B	HDSL Loop 2	(Ring)
6	HDSL_TIP_B	HDSL Loop 2	(Tip)

(a) All other pins are not used. Pins 1 and 6 not used on single-pair HDSL cards.

Table 35. D25F Data Port Connector Pinouts

Pin (a)	Signal Name	V.35	V.36	X.21	DCE Input/Output
7	Signal Ground	SG	SG	SG
2	Send Data	SD_A	SD_A	T_A	Input
14		SD_B	SD_B	T_B
3	Receive Data	RD_A	RD_A	R_A	Output
16		RD_B	RD_B	R_B
15	Send Timing	SCT_A	ST_A	S_A	Output
12		SCT_B	ST_B	S_B
17	Receive Timing	RCT_A	RT_A	not used	Output
9		RCT_B	RT_B
24	Terminal Timing	SCTE_A	TT_A	TT_A	Input
11		SCTE_B	TT_B	TT_B
5	Clear to Send	CTS	CTS	not used	Output
13
6	Data Set Ready	DSR	DSR	not used	Output
22
8	Received Line Signal Detect	RLSD	RLSD	I_A	Output
10				I_B
25	Test Mode	TM	TM	not used	Output
4	Request to Send	RTS	RTS	C_A	Input
19				C_B
20	Data Terminal Ready	DTR	DTR	not used	Input
23
18	Local Loopback	LL	LL	not used	Input
21	Remote Loopback	RL	RL	not used	Input

(a) All other pins are not used.

64 August 9, 2002 UTU-701 and ETU-751 List 1