Patton electronic 3088A manual V.35 interface, E1 interface, Pin #, Signal

Model 3088A Series Getting Started Guide E • Interface pinouts

V.35 interface

DB-25 female connector (DTE/DCE orientation)

Pin #	Signal	Pin #	Signal
1	Frame Ground	12	TxC-b (DTE Source)
2	TxD-a (DTE Source)	14	TxD-b (DTE Source)
3	RxD-a (DCE Source)	15	TxC-a (DCE Source)
4	RTS (DTE Source)	16	RxD-b (DCE Source)
5	CTS (DCE Source)	17	RxC-a (DCE Source)
6	DSR (DCE Source)	18	LL (DTE Source)
7	Signal Ground	20	DTR
8	CD (DCE Source)	21	RL
9	RxC-b (DCE Source)	24	ExtC-a (DTE Source)
11	ExtC-b (DTE Source)	25	TM (DCE Source)

E1 interface

RJ-48C female connector

Pin #	Signal
1	Receive (Ring)
2	Receive (Tip)
3	Shield
4	Transmit (Ring)
5	Transmit (Tip)
6	Shield
7	No connection
8	No connection

V.35 interface 70