Black Box 3600 MODEM manual Appendix B Phone Jack Descriptions, Pin Function

Appendix B

Phone Jack Descriptions

DIAL Pin Functions

The DIAL jack connects to the PSTN dial-up lines. Pin functions are as follows:

Pin		Function
1, 2, 3		Not used
4	R	Ring side of telephone line
5	T	Tip side of telephone line
6, 7, 8		Not used

TELSET/LEASED LINE Pin Functions

The 8-pin TELSET/LEASED LINE jack allows a standard telephone or a leased line to be connected to the modem. Pin functions are as follows:

Pin	Function
1, 2	Transmit pair - 4-wire leased line or Tx and Rx for 2-wire
	leased line
4, 5	Ring and tip (respectively) of telephone line for a telephone
7, 8	Receive pair - 4-wire leased line

V.3600 B-1