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MERLIN LEGEND Communications System Release 7.0
Pocket Reference
555-670-116
Issue 1
April 1999
141
Reference Documents
Wiring Constraints
System Wiring
■ System within 5 feet of dedicated AC power outlet.
■ System within 25 feet of the network interface.
■ Telephones within 1000 cable feet (304.8 m) of all telephones
except MLX telephones. MLX telephones within 3000 feet of
control unit. IROBs if needed.
■ Ground wire for the power supply cannot be over 10 feet.
■ If the SMDR printer is over 50 feet from the control unit, use an
Asynchronous Data unit (ADU).
■ Back-to-back connection of the DS1 facility with another
system’s facility is possible when the cable distance is less than
1300 feet.
■ Telephone Wiring.
■ Maximum cord length from an MLX telephone to a ISDN data
module is 80 feet (24 m).
■ Total length of cords between the KS22911-L2 or 406743419
power supply and the MLX telephone cannot be more than 50
feet.
■ Do not replace the 2-foot. D8AC cord (packaged with the DSS)
with a longer cord.
■ Radio base of the MDW 9000 cordless telephone must be at
least 25 feet from the control unit.
PC Connections
To use the DOS SPM or WinSPM software, you must install the
software using the directions packaged with the software. Also, your
PC must be connected to the MERLIN LEGEND System directly via
a serial port on your PC, or you must connect to the MERLIN
LEGEND internal modem using your PC’s modem:
■ Direct Connection. A serial port on your PC is connected
directly to the MERLIN LEGEND System programming jack—
the lower modular RS-232 jack on the processor module.
■ Internal Connection. You are using a modem (either
connected to or built into your PC) that is connected to the
MERLIN LEGEND System (for example, via an 012 T/R or 016
T/R module) to access the MERLIN LEGEND internal modem.
■ External Connection. You are using a modem (either
connected to or built into your PC) and using a dial-up
connection to access the MERLIN LEGEND internal modem.
The External Connection type requires use of the Remote
Access feature to allow you to connect to the MERLIN LEGEND
programming port without human intervention.
■ Manual Connection. You are using a modem (either connected
to or built into your PC) and using a dial-up connection to
access the MERLIN LEGEND internal modem. The Manual
Connection is used when you must reach MERLIN LEGEND
programming port by placing a call to the site and the person
that answers transfers your call to the programming port.
Technical Addendum