Model 2144 POTS/ISDN Splitter Shelf
Installation Guide
Copyright © 2001,
Comtest Advanced Networks
This guide provides the basic information required to install the Comtest Model 2144 POTS/ISDN Splitter Shelf in a Central Office location.
Installation
The 2144 requires 3U (5.25 inches) of rack space and is centre mounted. The shelf is supplied with mounting brackets and hardware to allow installation
in a 19 inch or 23 inch rack. By repositioning the mounting brackets, the shelf can be installed with the connectors front or rear facing. With the connectors facing the rear, a depth of 10 inches would be sufficient to mount the shelf with cables installed.
Grounding
To comply with the Network Equipment Building Systems (NEBS) requirements, a suitable ground must be provided. The 2144 can be grounded to the rack through the mounting brackets, eliminating the need for separate a ground wire.
Cabling Overview
The 2144 Splitter Shelf cabling configurations will vary depending on installation locations and the number of lines supported by the DSLAM. However, the physical interface to the back plane connectors are standard 50- pin
The DSL Interface connectors (J1, J4, J7, J10, J13, & J16) and the LOOP Interface connectors(J2, J5, J8, J11, J14, & J17) are oriented so that the mating plug
Connector Pinouts
As view from the rear of the shelf:
∙ADSL signals to and from the DSLAM enter the 2144 splitter shelf using the left most telephone connectors, designated “DSL Interface”.
