Usualy the V.35 interface comes in the form of ISO-2539 connector (called also Winchester) Devices like Tahoe 635 modem or Tahoe 235 converter are equipped with V.35 socket like one shown below:

V.35 interface contains following signals:

Pin	Name	Direction DTE   DCE	Description
A	shield		Cable shield
B	GND		Signal ground
C	RTS	>	Signal active during transmission from router
D	CTS	<	Permission for sending data from modem
E	DSR	<	Signals modem readiness
F	DCD	<	Active, when modems are synchronized
H	DTR	>	Signals router readiness
P	SD(A)	>	Data sent to modem (A)
R	RD(A)	<	Data received from modem (A)
S	SD(B)	>	Data sent to modem (B)
T	RD(B)	<	Data received from modem (B)
U	SCTE(A)	>	Transmit clock supplied by router (A)
V	SCR(A)	<	Receive clock (A)
W	SCTE(B)	>	Transmit clock supplied by router (B)
X	SCR(B)	<	Receive clock (B)
Y	SCT(A)	<	Transmit clock (A)
AA	SCT(B)	<	Transmit clock (B)

• DTE - router, DCE - modem
  
• SD, RD, SCT, SCR and SCTE are differential signals conforming to RS-422/V.11. Remaining signals conform to RS-232.

Tahoe routers have a DB25 connector, which contains all necessary V.35 signals according to RS-530 standard.

RS-530 interface has following pinout:

Pin	Name	Direction DTE   DCE	Description
1	shield		Cable shield
2	SD(A)	>	Data sent to modem (A)
3	RD(A)	<	Data received from modem (A)
4	RTS	>	Signal active during transmission from router
5	CTS	<	Permission for sending data from modem
6	DSR	<	Signals modem readiness
7	GND		Signal ground
8	DCD	<	Active, when modems are synchronized
9	SCR(B)	<	Receive clock (B)
11	SCTE(B)	>	Transmit clock supplied by router (B)
12	SCT(B)	<	Transmit clock (B)
14	SD(B)	>	Data sent to modem (B)
15	SCT(A)	<	Transmit clock (A)
16	RD(B)	<	Data received from modem (B)
17	SCR(A)	<	Receive clock (A)
20	DTR	>	Signals router readiness
24	SCTE(A)	>	Transmit clock supplied by router (A)

• DTE - router, DCE - modem
  
• SD, RD, SCT, SCR and SCTE are differential signals conforming to RS-422/V.11. Remaining signals conform to RS-232.