Multitech BL-Series Spezifikationen PDF herunterladen (Seite 120)

Multitech Modem Setup and Configuration Instructions

When the modems are working in a back to back situation, adjust the following settings using a terminal and

the &W command to save settings to modem memory. SW3 UP - Disable Command Responses SW8 UP -

Disable Command Mode SW16 - according to 2 or 4 wire operation S2=128 - disables on-line escape to

command mode S13=128 - disable remote configuration $SB=9600 - or whatever baud rate is required $BA -

so that we get a different serial baud rate to connection rate The owner's manual also lists many commands

relating to compression, parity and flow control which should be considered. Typically the block size may be

reduced and compression disabled if inter-byte delays are causing problems.

Back to Back Test Procedure (Multitech) 1-27-99 Technical Support Document #

132211

Back to back testing with Multi-Tech Modems -------------------------------------------

Purpose: To verify modems working over a 2 or 4 Wire Leased Line(2WLL or 4WLL).

Equipment needed: 2 Multi-Tech Modems optioned with leased line capabilities : 2 terminals ( for transmitting

and recieving data) : 2 straight thru DB25 25 pin or modem cables : for 2WLL testing a regular RJ-11 cable

will be used : for 4WLL testing a crossed RJ-11 cable will be used : small screwdriver for changing dip

switch's

Procedure:

1) First you must verify your modem is capable of lease line(LL) operation. Some Multi-Tech modems only

work in dialup operation, others do dialup and 2WLL, while others work with dialup, 2WLL, & 4WLL. The

ZDX, ZPX, & BC series only work in dialup operation, the LL option is not available on these models. All

other Multi Tech modems work in dialup & 2WLL. The BL & BLR series work in dialup, 2WLL & 4WLL

modes.

2) Next you will need the use of a terminal or PC and a straight through modem cable to set the serial baud

rates on both modems. The commands will be; AT$SBxxxx&W ( where xxxx= serial baud rate of terminal or

computer)

3) Next, you need to set the proper dip switch's for LL operation. Refer to dip switch settings below:

i) Ideal switch settings for Multi-Tech BL & BLR series modems 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 D U U

U x U U D U D D D U U U U-2WLL D-if Xon/Xoff flow control used D-4WLL x= up on one modem and down

on the other modem for answer or originate mode(doesn't matter which side is which as long as one site has

dip 5 up and the other has dip 5 down). Make sure that both modems have switches 13 and 14 set identical.

ii) Ideal switch settings for Multi-Tech BA & BR series modems The settings are the same as the BL series

but switch 16 has no effect on the BA series. Also on some models, there is a seperate dial/leased toggle

switch located by the other bank of dip switchs, this needs to be toggled into the leased position for this test.

iii) Ideal switch settings for Multi-Tech V32L series modems 1 2 3 4 5 6 7 8 1 2 3 4 D XX D U X U D D D D D

D U-if hardware flow control used

X=up on one modem and down on the other modem for answer or originate mode(doesn't matter which side

is which as long as one site has dip 5 up and the other has dip 5 down). Make sure that the baud rate

switches are set identical between them ( located on the front ).

file:///A|/html/multitech_config.htm (2 of 3) [27/06/2001 20:47:50]

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 126

Keine Kommentare

Multitech BL-Series Spezifikationen Seite 120