Multi-Tech Systems BL-Series manual 25bis Set-Up and Initialization, 25bis DIP-Switches, 148

MultiModemBL User Guide

Another asynchronous mode concern is the problem of connecting at a different speed than the speed at which the serial port is set. If your modem port speed is different from the serial port speed, you must either:

1)Enable speed conversion and have flow control on, or

2)Enable connect responses (with the ATX1 command) and change the serial baud rate after receiving a connect message.

If the $VD1 command is entered when in Auto-Answer mode, the modem answers immediately upon receiving the first ring.

There is no disconnect message (NO CARRIER) if a normal connection is made.

V.25bis Set-Up and Initialization

Before you operate your modem in the V.25bis mode, you need to make sure it is set up properly (various RS-232 lines such as DSR and CTS act as specified in the V.25bis standard). Setup involves proper DIP-Switch settings and soft-switches (software controlled conditions).

V.25bis DIP-Switches

#1 Unforced DTR

#2 NA

#3 NA

#4 NA

#5 Auto-Answer enabled

#6 Async - Max throughput set Sync - Slave Clocking unforced

#8 Command Mode forced

#9 Digital Loopback Off

#10 Dial-Up

#11 Async - AT/Multi-Tech Resp.

#12 Async/Sync mode set per requirements

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