Ttr-Lev (Ttr Level) - Avaya S8700 Maintenance Manual

For multi-connect configurations

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Table of Contents

Maintenance-Object Repair Procedures

TTR-LEV (TTR Level)

MO's Name (in

See Repair Procedure for the TTR-LEV below.

TN748 and TN420 Tone Detector circuit packs and TN744 Call Classifier circuit

packs provide tone receivers for detecting various types of signaling tones. These

circuit packs are shared resources that serve every user of the PBX. This

discussion uses the following terms and abbreviations (note that the

maintenance-related system parameters form uses different names than the

alarm and error logs):

Type of Tone

Multifrequency

Tone Receiver

General-Purpose

Tone Detector

Call Classifier

TN748s and TN420s each have 4 DTMR-PTs and 2 GPTD-PTs. DTMR-PTs

interpret dual-tone multifrequency (DTMF) calling signals and translate them into

logical digits 0 through 9, *, and #. GPTD-PTs detect call-progress tones, modem

answer tones, and transmission test tones.

TN744 Call Classifier circuit packs have 8 CLSFY-PTs. These ports detect DTMF

tones and classify network and MFC (multifrequency compelled) signaling tones.

(That is, CLSFY-PTs can function as DTMR-PTs or GPTD-PTs, and have other

additional capacities).

Issue 1 May 2002

Initial Command to Run

Call-Progress

Tone Receiver

Full Name of MO

Abbreviation