Mitel MIVOICE OFFICE 250, Installation And Administration Manual, Page: 92 / 585

MiVoice Office 250 Installation and Administration Guide
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It is the responsibility of the organization and person(s) performing the installation and maintenance
of MiVoice Office 250 systems to choose, test, and deploy a suitable UPS solution that both meets
the customer requirements, and at the same time does not cause any problems with the normal
operation of the MiVoice Office 250 or with the chosen UPS.
Main Distribution Frame (MDF) and Cabling
Connections between the trunks, digital telephones, external equipment, and system modules are
made at the Main Distribution Frame (MDF). The MDF consists of a plywood backboard mounted
on a wall and equipped with adequate interconnection hardware. Typically, the interconnection
hardware includes industry-standard 66M1-50 terminal blocks, or 237A Krone blocks in Europe.
Bridging clips are used on all terminal blocks to complete cross-connections. A patch panel and/or
appropriate modular jacks may be used to connect other types of trunks to the chassis. Table 5
summarizes and describes the materials used to construct an MDF.
NOTE
Consider the following facts about the compatible UPS units:
• Only monitoring capabilities were tested.
• Only connection across USB was supported.
• Other models/series available from APC, MGE, and ONEAC were not supported.
• The best choice of a UPS for a particular system depends on environmental factors and a
balance between rated load and desired runtime.
Table 5: Main Distribution Frame Materials
Material Description and Purpose
4 ft x 6 ft x 3/4-inch
backboard, typical
a
Mounted securely on a wall, the backboard provides the vertical surface
for mounting terminal blocks, modular jacks, power strips for AC
transformers, or other ancillary equipment.
In the United States,
66M1-50 Terminal Block
In Europe,
237A Krone Block
May be used to terminate cables from the telephone company (CO) or
Local Exchange to the customer’s premises. For systems equipped with
digital telephone capability, the blocks may be used to terminate cables
from the Mitel 5000 to the MDF for distribution to end users.
Equipment rack If using the rack-mount installation method, the rack should be of
standardized dimensions for mounting telephone or data equipment.
The rack should be set up so that the front of the chassis is at eye-level
so the technician can read messages or commands appearing on the
LCD panel. For further details, see the
Installation
chapter.
Patch panel If using the rack-mount installation method, the patch panel should
provide the appropriate number of ports for supporting the system. Each
port shall provide an 8-pin/8-conductor (8P/8C) interface in a 110-type
termination block suitable for 22–24AWG wire. For further details, see
the
Installation
chapter.
Patch cables If using the rack-mount installation method, patch cables terminated with
8P/8C plugs provide rapid, safe, and secure interconnection of trunk
module circuits with telco facilities. For further details, see the
Installation
chapter.
6-pin to 8-pin step-up plug adapters For connecting cables terminated with 6-pin plugs into 8-pin patch panel
sockets.
6-wire modular jack assembly wired
to RJ-11 specifications
For prewiring CO lines for Power Fail Bypass circuits.
6-wire modular jack assembly wired
to RJ-14 specifications
May be used to terminate cables from the telephone company (CO) to
the customer’s premises. May also be used for prewiring CO trunks.