MT2834BL

Chapter 8 - Dip-Switch Settings

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide

Switch #8

Enable/Disable Command Mode -- "Com"

(Asynchronous/Synchronous Mode/Leased/Dial-Up)

In some applications you may want to disable the modem's Command mode so that the modem does

not recognize or react to AT or V.25bis commands. This may be true in strictly auto-answer

applications where no call origination is required. Place DIP-Switch #8 in the DOWN position to

enable Command mode. Place DIP-Switch #8 in the UP position to disable Command mode. The

factory default setting is Command mode enabled.

Disable Command Mode = Switch #8 UP

Enable Command Mode = Switch #8 DOWN

Factory Default Setting = DOWN

Switch #9

Digital Loopback Test

(Asynchronous/Synchronous Mode/Leased Line/Dial-Up)

When in Synchronous mode, this switch controls both Local Digital Loop and Remote Digital Loop

tests while on-line. When the Voice/Data switch is toggled to the Answer mode position (UP) and

DIP-Switch #9 is in the UP position, the modem performs the Local Digital Loopback test. When DIP-

Switch #9 is DOWN and the Voice/Data switch is toggled to Answer mode position (UP), the modem

performs the Remote Digital Loopback test.

Local Digital Loopback Test = Switch #9 UP

Remote Digital Loopback Test = Switch #9 DOWN

Factory Default Setting = DOWN

Switch #10

Leased Line/Dial-Up Operation -- "DDD"

(Asynchronous/Synchronous Mode/Leased Line/Dial-Up)

The modem operates in either leased-line or dial-up modes. This switch controls leased-line/dial-up

operation. Place DIP-Switch #10 in the UP position for Dial-Up operation. Place DIP-Switch #10 in

the DOWN position for Leased-Line operation

Dial-Up Operation = Switch #10 UP

Leased Line Operation = Switch #10 DOWN

Factory Default Setting = UP

Switch #11

"AT" Responses/Multi-Tech Responses

(Asynchronous Mode/Leased line/Dial-Up)

In Asynchronous mode, you can set the modem to respond with Result Codes according to the

"Multi-Tech" command response set (Switch #11 in the DOWN position), or to "AT" command

response set (Switch #11 in the UP position). The &Q command performs the same function

(choosing AT or Multi-Tech Result Codes), and is explained further in Section 5.3 of this manual.

"AT" Responses (&Q1) = Switch #11 UP

"Multi-Tech" Responses (&Q0 = Switch #11 DOWN

Factory Default Setting = DOWN