3Com 32x, 52x manual Universal to V.35 Adapter Cable, 8UNIVERSAL to V.35 Adapter Cable

Connectors and Cables 2-11

UNIVERSAL to V.35 Adapter Cable

To connect a SuperStack II bridge/router to a V.35 DCE device, cable the UNIVERSAL connector using a V.35 adapter cable.

Figure 2-8 shows the pin assignments of the V.35 adapter cable.

When constructing your own V.35 adapter cables, the required cable type is equivalent to Belden part number 9835. Cable length is limited to CCITT standard V.11 Appendix I.2.

= twisted pair

To UNIVERSAL port on bridge/router

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

37-pin female connector

To CSU/DSU

NN	JJ	DD	Z	V	R	L	F	B
LL	FF	BB	X		T	N	J	D
MM	HH	CC	Y	U	P	K	E	A
KK	EE	A	W		S	M	H	C

V.35 female connector

Name	Abbr
Shield	Sheild
Signal Ground	SG
Term in Service	TS
Send Data	SD (A)
Send Data	SD (B)
Received Data	RD (A)
Received Data	RD (B)
Signal Rate indication	SI
Select Frequency	SF
Signal Quality	SQ
Standby Select	SS
Terminal Timing	TT (A)
Terminal Timing	TT (B)
Sending Timing	ST (A)
Sending Timing	ST (B)
Receive Timing	RT (A)
Receive Timing	RT (B)
Remote Loopback	RL
Local Loopback	LL
New Signal	NS
Standby Indicator	SB

Pin	braid	Pin
1		A
19		B
28		C
4		P
22		S
6		R
24		T
2		D
16		E
33		F
32		H
17		U
35		W
5		Y
23		AA
8		V
26		X
14		N
10		L
34		J
36		NN

Abbr	Name
FG	Frame Ground
SG	Signal Ground
RTS	Request to send
SD+	Send Data +
SD-	Send Data -
RD+	Received Data (A)
RD-	Receive Data (B)
CTS	Clear to Send
DSR	Data Set Ready
RLSD	Recieve Line Signal Detect
DTR	Data Terminal Ready
SCTE+	Serial Clock Transmit External (A)
SCTE-	Serial Clock Transmit External (B)
SCT+	Serial Clock Transmit (A)
SCT-	Serial Clock Transmit (B)
SCR+	Serial Clock Receive (A)
SCR-	Serial Clock Receive (B)

-Reserved for future use

-Reserved for future use

RI Ring Indicator

-Reserved for future use

Figure 2-8UNIVERSAL to V.35 Adapter Cable

You can order this cable from 3Com (part number 3C8035).