Mitel MIVOICE OFFICE 250, Installation And Administration Manual

Page: 93 / 585

Specifications
65
Cabling to Phones
IP phone cabling consists of Category 5e (CAT 5e) or CAT 5 cable connected between the IP phone
and the local area network (LAN) at the user’s phone location.
A 10 ft. (3 m.) 25-pair cable is available for connecting the HX Controller’s DDM-16 to the main
distribution frame (MDF). The cable, part number 813.1910, is terminated on one end with a special
connector that attaches to the 48-pin connector on the DDM-16. The other end of the cable is
terminated with a male Amphenol-type connector that attaches to the station block at the MDF. For
usage instructions, see “Connecting Station Cables to the MDF” on page 1-233 .
For the DEI DEM-16 station cabling information, see page 96.
Connections to the Public Network
In the United States, CO trunks are terminated on telephone company 66-type connecting blocks,
as required by FCC regulations. Cross-connect cable connects the 66-type blocks to the CO terminal
blocks on the MDF. The trunks are then connected to the Loop Start Modules (LSM) using cable
terminated with 8-pin plugs wired to RJ-14 specifications. An alternate method is to interconnect the
lines through a patch panel. In Europe, Local Exchange Trunks are terminated on 237A Krone blocks.
DID trunks are terminated on telephone company RJ-type modular jacks (or on 66-type blocks that
are then cross-connected to modular jack assemblies), as required by FCC regulations. Two-pair,
nonreversing, mod-to-mod line cord is used to connect each DID trunk to the appropriate jack on
the corresponding SLA.
T1 spans and Primary Rate Interface (PRI) spans are terminated on RJ-48C modular jacks or on
66-type connecting blocks that are then cross-connected to modular jack assemblies, as required
by FCC regulations. Four-pair, nonreversing, mod-to-mod line cord is used to connect each T1 and/or
PRI span directly to the T1 jack on the corresponding T1M or T1M-2 module.
Mitel recommends installing gas discharge tubes with silicon avalanche suppressors on all
non-T1/PRI trunks for lightning protection. For T1, T1/PRI, and E1/PRI spans, the Channel Service
unit (CSU) itself provides the lightning protection. Also, in areas with frequent occurrences of
8-wire modular jack assembly wired
to RJ-48C specifications, or to
RJ-45S in Europe
For prewiring T1, T1/PRI, and E1/PRI trunks.
Four- or 6-wire modular plug For terminating cable ends for insertion into jacks.
24 AWG twisted, unshielded cable
b
Appropriate wiring for making network connections to telephone facilities
and, where appropriate, to IP end users.
Bridging clips To ensure complete electrical contact between cross-connected wires
on a 66M1-50 or 237A Krone block.
Miscellaneous hardware, materials,
and tools
Appropriate tools and fasteners to mount the backboard on a wall and to
secure terminal blocks and other system-required equipment to the
backboard.
a. System requirements will determine the size of the MDF backboard and the quantity of each item.
b. Provide sufficient Category 5 (CAT 5) or CAT 5e cabling for connecting the LAN server to the Mitel 5000 and for con -
necting IP phones to the LAN, as needed.
Table 5: Main Distribution Frame Materials (Continued)
Material Description and Purpose