CTI Products EXB-232 Asynchronous Serial System Extender - Manual (Page 11)

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7
"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