ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER USER’S MANUAL

D.6.3 CM-1056E, LARSE S5600, RACAL-MILGO4556

The CM-1056E, Larse S5600, and Racal-Milgo 4556 are all nearly identical CSU/DSU’s, and are used exclusively for leased-line operation. Set the switch settings as follows (the numbers are not given, because they vary from model to model):

Switch Function

Setting

CTS

OFF (follows RTS from DTE)

DTE

OFF

Remote digital loopback

ENABLED

Stream

OFF

RTS

OFF (gets RTS from DTE)

DSR loopback

ON, data during loopback

Circuit assurance

ENABLED

Clocking

internal on one side of the line, external on the other

Before performing any back-to-back testing, obtain a 2-pair (4 wire) RJ-45 cross-over cable, with pin 1 connected to pin 8, and pin 2 connected to pin 7.

If these CSU/DSUs will be used on a public data network (instead of a leased line), set the clocking function to OFF, because the CSU/DSUs will receive their timing from the DDS network.

D.6.4 MOTOROLA TA220/TA220K

The Motorola® TA220s provide service over ISDN lines, but do not provide internal termination, and so require a NT1 connection. The TA220/220k’s can be used simultaneously with other ISDN equipment over the same digital line.

Using the V.35 adapter provided with the TA220, connect the Router Sync+ to the RS-232 port #1 on the TA220. Configure the TA220 for V.35 operation.

Using the TA220’s front keypad, load the factory-default setting 0. Set the SWITCH CONFIG options, according to the type of service available. Contact your service provider for more information about the switch type.

After loading the factory default, change the PORT CONFIG OPTIONS as specified:

DTE options:

 

• port 1:

SYNCHRONOUS 1

• speed:

56K or 64K

• DTE CMD and MESSAGE OPTIONS: set to V.25 HDLC

• DTE PIN OPTIONS:

set DCD to NORMAL PROTOCOL

• OPTIONS:

set to NONE or BOND

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Black Box LRA005A-R2, LRS002A-R2, LRA001A-R2 manual 118, 3 CM-1056E, Larse S5600, RACAL-MILGO4556, Motorola TA220/TA220K