Connecting the main distribution frame to stations and the public switched telephone network
Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway 155
December 2003
Connecting the main distribution frame to stations and
the public switched telephone network
Once the main distribution frame (MDF) is completed and the media gateways are connected to the MDF,
you must connect the MDF to stations (telephones) and the public switched telephone network (PSTN).
You must also have a provision plan at this time. For more information, see Completing a provisioning
plan on page 166.
Station (telephone) wiring design
Station wiring from the MDF to information outlets are provided by various means. First, station cables
are used to connect the MDF to satellite closets. Then station cables are used to branch out to site closet
locations that are located physically close to information outlets.
Information outlets may be wired directly to the MDF, a satellite closet, or site closet.
The following hardware and cabling is used:
• Information outlets on page 155 (modular jacks)
• Station cables on page 155
• Closets on page 157
• Station circuit distribution from equipment room on page 158
• Connected cable station adapters on page 164
Information outlets
Information outlets are 8-pin modular jacks. Most of the outlets are wired with push-on connections.
Information outlets are also available that connect to a double modular plug-ended 4-pair station cable
routed from the MDF, a site/satellite location, or an adapter.
Station cables
For clarity a station cable is either a 25-pair cable, multiple 25-pair cable, or 4-pair D-inside wire (DIW)
run from the equipment room, site/satellite location, or adapter to the information outlets. The following
station cables are available. See Figure 57, Example of extending 4-pair station cables,
on page 157.
25-pair station cable
— Use between the equipment room and site/ satellite locations or adapters. Use an
A25D cable (male to male) between the equipment room and satellite closet. Use a B25A cable between
the equipment room and site closet or adapter.
Multiple 25-pair station cable
— Use between the equipment room and site/satellite locations or
adapters. This cable consists of individually sheathed 25-pair cables with a factory-installed 25-pair
connector on each end. Use a male-to-female cable to connect between the equipment room and site
location or adapter. Use a male-to-male cable to connect between the equipment room and satellite
location. Staggered finger cables are recommended for all multiple 25-pair station cables and are
available in both double-ended and single-ended types.
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