User's Manual

Chapter 5 Checking the installation prerequisites 89
BCM200/400 4.0 Installation and Maintenance Guide
use of a station auxiliary power supply (SAPS) for loops 300 m (975 ft.) to 1200 m (3900 ft.).
In North America, the SAPS must be a CSA- or UL-approved Class 2 power source.
In Europe, the SAPS must be a Class II power source and CE marked.
no bridge taps
Analog loop
The following parameters must be met for an analog loop:
maximum DC loop resistance of 208
maximum cable length (0.5 mm or 24 AWG) of 1220 m (4000 ft.)
System equipment, supplies, and tools
Refer to the following sections for the equipment required to install the BCM system:
“Basic hardware”
“Optional equipment”
“Other hardware and tools” on page 90
Basic hardware
The BCM system consists of some combination of the following hardware:
main unit
expansion unit
media bay module (MBM)
telephones
cabling for connections between hardware units
Optional equipment
You can add the following equipment to the BCM system to support specific requirements beyond
the basic hardware:
station auxiliary power supply (SAPS)
key indicator module (KIM) for T7316E telephones
analog terminal adapter 2 (ATA2) if connecting analog equipment to a digital extension line
uninterruptable power supply (UPS)
analog emergency telephone
optional WAN card field replaceable unit (FRU)
Note: You must include specific features in the keycode file for some hardware to
function.