Nortel Networks BCM1000 - Manual (Page 121)

Chapter 5 Installing the BCM1000 121
Installation and Maintenance Guide
Analog loop
The following parameters must be met for an analog loop.
• maximum dc loop resistance of 208
Ω
• maximum cable length (0.5 mm or 24 AWG) of 1220 m (4000 ft.)
System equipment and supplies
Use the following checklists to ensure that you have all the required equipment.
Basic hardware
The Business Communications Manager system consists of some combination of the following
hardware:
• BCM1000
• BCM1000e
• media bay modules
• telephones and other communication devices such as fax machines
• cabling for connections between hardware units
You can place a maximum of three media bay modules in the BCM1000. You must install an
BCM1000e if you require more than three media bay modules.
Optional equipment
The following equipment can be added to the system to support specific requirements beyond the
base unit:
• Station auxiliary power supply (SAPS)
• Central answering position (CAP or CAPN) module to as many as five M7324/M7324N
telephones in the system
• Business Communications Manager Analog Terminal Adapter 2
(ATA 2) if connecting analog equipment to a digital media bay station module
• Uninterruptable power supply (UPS) as a standalone device
• Analog emergency telephone