Ethernet Cabling Guidelines
Category 3 Cabling Guidelines (CX/CXi)
Category 5 cable is recommended for all network connections, but the CX/CXi controller can
support Category 3 cable subject to the following general guidelines:
• Category 3 cable can be used for one purpose only: to connect single Ethernet devices (IP
phones or PCs) directly to the controller or a Layer 2 expansion switch.
• Category 5 (or better) cable is required for all other Ethernet connections, including:
- -connections from "dual devices" (IP phone and PC) to the controller or an expansion
switch
- -uplink connections between switches
- -connections from the Internet to the 10/100 WAN port
- -connections to the T1/E1 Combo module
- -connections to the Quad Copper Interface module from ASUs, NSUs, or Peripheral
Cabinets
• If a connection uses Category 3 cable, restrict its port speed to 10 Mbps and half duplex.
It is preferable to program the settings on the switch (onboard or expansion) rather than
the connected device.
• Category 3 cable can supply Power over Ethernet (PoE) via the controller's phantom power
feed.
• The cable installation must meet Category 3 standards (TIA/EIA-568).
Note: Not all telecom cable is Category 3-compliant.
Note: Detailed guidelines concerning the use of Category 3 cable can be found in the
the Engineering Guidelines document on the Mitel Edocs web site.
(http://edocs.mitel.com). Refer to this document before starting the installation.
Note: Some expansion switches may not support PoE with Category 3 cable.
To Next Page
Loading...
