User guide

68-11089-115

"RESET" pushbutton

-- Hardware reset for the entire EXB-TELCO module. Non-volatile

information is retained.

"CMD" pushbutton

-- currently not used.

"CSVC" pushbutton

-- reserved. Used during configuration of custom engineered systems. See

the custom configuration documents for your system.

"RSVC" pushbutton

-- reserved -- Used during configuration of custom engineered systems.

See the custom configuration documents for your system.

"OPTION A" switches

-- This eight position DIP switch is read by the EXB-TELCO module at

power-up or after the RESET button is pressed and is used to set the following options:

OPTION A

Position Function

1 Up: Leased-Line Answer Mode

Dn: Leased-Line Originate Mode

2 Reserved, leave Dn

3 Not Used, leave Up

4 Not Used, leave Up

5 Normal Systems leave Up

Custom Engineered Systems, set as indicated in Custom Documentation

6 Dn: EXB #1, use for Originate

Up: EXB #2, use for Answer

7 Up: -10 dBm Modem Tx Level (normal)

Dn: -16 dBm Modem Tx Level (for back-to-back leased-line connection)

8 Leased-Line Mode 2wire/4wire Select

Up: 2 wire

Dn: 4 wire