Nortel Networks BCM200 manual System equipment, supplies, and tools, Analog loop, Basic hardware

Chapter 5 Checking the installation prerequisites 89

•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

Note: You must include specific features in the keycode file for some hardware to function.

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)

BCM200/400 4.0 Installation and Maintenance Guide