Nortel DMS-100 Series Maintenance Manual page 88

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Table of Contents

2-12 Functional overview

A list of the recommended DIP switch settings appears in the following table.

Table 4 Recommended NT6X21AD S1 DIP switch settings

P-phone sets long

loop: 19-24dB

P-phone sets

medium loop:

P-phone sets

short loops: 0-4dB

Northern Telecom

Other vendors

equivalent mode

Note: dB=decibel

NL = non-loaded

9+2=loaded (900 ohm + 2.16 micro-farads) network

Vpp=voltage peak to peak

EML= estimated measured loss, as defined in NTP 297-2011-180 BCS35 version 01.02

A list of two acceptable limits for transhybrid loss (THL) appear in the

following tables. The limits depend on the D/A level selected. The

NT6X21AD line card uses the same diagnostics as the NT6X21AC line card.

Because of this event, the THL limits are modified for diagnostics purposes.

297-8361-550 Standard 04.02 December 2004

Switch position

Signaling level

Troubleshooting