SpectraLink Link 150 M3 MCU - Manual (Page 13)

SpectraLink Corporation Installation and Operation
Link WTS – Link 150 M3 MCU
5. Run Cable for System
5.1 Run Cables to Base Station Locations
The Base Station locations should be designated on the building floor plans provided
to the SpectraLink field service engineer. Base Stations can be mounted easily on
raised or acoustical ceiling tiles, or on the wall. Avoid locating Base Stations in high
or hard-to-reach places, as this will hinder maintenance, testing and/or repositioning.
Wire Specifications
 The customer’s wire contractor is responsible for adhering to all local
codes for wiring.
SpectraLink recommends UL-listed wire that conforms to the following
specifications for AWG, distance, and number of power pairs required for this
installation.
Power
Pairs
Max Cable Feet
22 AWG
Max Cable Feet
24 AWG
Max Cable Feet
26 AWG
1 1,100 750 470
2 2,200 1,500 940
3 2,200 2,200 1,400
 One additional pair is required for data.
Attenuation must not exceed 6.8 dB/1,000 feet at 772KHz.
Wire that is already installed (spare house cable) can be used when it is available.
House cable will usually run from the MDF in the telephone equipment room to
intermediate distribution frames (IDFs) spread throughout the facility. Install new
wire from the closest IDF to the Base Station. Be sure no bridge taps, multiples, or
“Y” connections are created or present.
Determine the amount of wire needed to connect the Base Station to the MCU by
scaling from a floor plan or a sketch, pacing, measuring, or estimating. Remember to
include enough wire to reach the ceiling.
 The wire length between the MCU and each Base Station may not exceed
2,200 cable feet.
Install an extra 25 feet of wire at the Base Station to allow for possible
relocation.
5.2 Pull Cable
Pull the cable from the MCU location (usually in the telephone equipment room) to
the Base Station locations designated on the floor plans.
If the cabling exits the building, consult the telephone system manual, the
National Electrical Code (NEC), and local codes for instructions on
providing lightning and other over-current protection.
PN: 72-0075-01-F.doc Page 13