Analog loop, System equipment, supplies, and tools, Basic hardware – Nortel Networks BCM200/400 User Manual
Page 101: Optional equipment
Chapter 5 Checking the installation prerequisites
91
BCM200/400 4.0 Installation and Maintenance Guide
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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.
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no bridge taps
Analog loop
The following parameters must be met for an analog loop:
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maximum DC loop resistance of 208
Ω
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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:
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•
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“Other hardware and tools” on page 92
Basic hardware
The BCM system consists of some combination of the following hardware:
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main unit
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expansion unit
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media bay module (MBM)
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telephones
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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:
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station auxiliary power supply (SAPS)
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key indicator module (KIM) for T7316E telephones
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analog terminal adapter 2 (ATA2) if connecting analog equipment to a digital extension line
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uninterruptable power supply (UPS)
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analog emergency telephone
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optional WAN card field replaceable unit (FRU)
Note: You must include specific features in the keycode file for some hardware to
function.