Paradyne 2144 User Manual

Model 2144 POTS/ISDN Splitter Shelf

Copyright © 2001,

Installation Guide

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 suppl ied 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 p lane connectors are standard 50 ­pin telephone-type receptacle connectors. Each Splitter card uses 24 pairs of the 25 pairs available on each
50-pin connector.

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 left-angled cable head will dress out to the left side of the shelf.
Whereas, the PSTN Interface connectors (J3, J6, J9, J12, J15, & J18) are oriented so that the mating plug right­angled cable head will dress out to the right side of the shelf.

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”.

• Signals to and from the LINE (outside plant) enter the 2144 splitter shelf using the centre

2668 (Canada)

Filter

ADSL Connector

LINE Connector

PSTN Connector

telephone connectors, designated “Loop Interface”.

• Cables to and from the central office switch enter the 2144 splitter shelf via the right hand

telephone connectors, designated “PSTN Interface”.

No. Tip Ring Tip Ring Tip Ring

1 26 1 26 1 26 1
2 27 2 27 2 27 2
3 28 3 28 3 28 3
4 29 4 29 4 29 4
5 30 5 30 5 30 5
6 31 6 31 6 31 6
7 32 7 32 7 32 7
8 33 8 33 8 33 8

9 34 9 34 9 34 9
10 35 10 35 10 35 10
11 36 11 36 11 36 11
12 37 12 37 12 37 12
13 38 13 38 13 38 13
14 39 14 39 14 39 14
15 40 15 40 15 40 15
16 41 16 41 16 41 16
17 42 17 42 17 42 17
18 43 18 43 18 43 18
19 44 19 44 19 44 19
20 45 20 45 20 45 20
21 46 21 46 21 46 21
22 47 22 47 22 47 22
23 48 23 48 23 48 23
24 49 24 49 24 49 24

Warranty

Comtest warrants all equipment manufactured by it and bearing its nameplate to be free from defects in
workmanship and materials, during normal use and service, for a period of three (3) years from the date of
shipment. In the event that a defect in any such equipment arises within the warranty period it shall be the
responsibility of the customer to return the equipment by prepaid transportation to a Comtest service centre
prior to the expiration of the warranty period for the purpose of allowing Comtest to inspect and repair the
equipment. If inspection by Comtest discloses a defect in workmanship or material it shall, at its option, repair
or replace the equipment without cost to the customer, and thereafter return it to the customer by the least
expensive mode of transportation the cost of which shall be prepaid by Comtest. In no event shall this warranty
apply to equipment which has been modified without the written authorization of Comtest, or which has been
subject to abuse, neglect, accident or improper application. If inspection by Comtest discloses that the repairs
that must be made on the equipment are not covered by this warranty, the regular repair charges shall apply to
any repairs made to the equipment.

This warranty constitutes the only warranty applicable to the equipment sold by Comtest and no other warranty
or condition, statutory or otherwise, expressed or implied shall be imposed upon Comtest nor shall any
representation made by any person including a respresentation by a representative or agent of Comtest be
effective to extend the warranty coverage provided herein. In no event (including, but not limited to the
negligence of Comtest, its agents or employees) shall Comtest be liable for special or consequential damages
or damages arising from the loss of use of the equipment and on the expiration of the warranty period all liability
of Comtest whatsoever in connection with the equipment shall terminate.

Canada Help

One Raymond Street [e-mail]
Ottawa, Ontario 1-800-668­K1R 1A2, Canada Fax: [phone]
Tel: [phone]