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BT8110

High-Capacity ADPCM Processor

Conexant Systems 

Appendix D . T1 ADPCM Transcoder

D.1 Introduction

D.1.3 ADPCM Transcoder System Specifications

Bt8110/8110B

High-Capacity ADPCM Processor

Table D-1. ADPCM Transcoder System Specifications

Name

Description

Channel Capacity

ADPCM Coding

Signaling Modes

T1 Framing

T1 Clear Channel

T1 ESF Data Link

Configuration Control

Synchronization

Alarms

T1 Self-Test

Transparent Channels

Diagnostic Test

Program Storage

Idle Channel Control

Slip Buffer

Power Requirement

Board Dimensions

48 channels, full-duplex.

Per ANSI Standard T1.303-1989 and ITU-T G.726 @ 32 kbit/s for

bundle format and transition signaling and 32 kbit/s and 24 kbit/s

for robbed-bit signaling. Both ANSI standard and proprietary

robbed-bit signaling algorithms are supported.

Bundle format or transition signaling per ANSI Standard

T1.302-1989 on per 384 kbit/s (bundle) basis. Robbed-bit

signaling per ANSI Standard T1.302.1989.

SF, ESF, SLC® 96 are options on all T1s.

ZBTSI and/or B8ZS can be selected via processor control or

auto-selected based on far-end format.

Both bit-oriented and message-oriented signaling supported on

X, Y, and Z ports.

Via built-in 4.8 kbit/s serial port or X, Y, or Z ESF data link to

integral microprocessor.

X, Y, and Z T1 outputs synchronized to any received T1 or to

external timing reference.

All T1, bundle, and transition signaling alarms available via

microprocessor. Indicators provided as required.

Looping of each T1 available via microprocessor control.

T1 PCM channels can be selected as transparent on 32 kbit/s

boundaries. This allows transmission of digital data in increments

of 32 kbit/s.

Full-time in-service diagnostic test of ADPCM coding processor

for all channels using idle channel or channel used for bundle

delta channel.

Storage of configuration data during power outage in nonvolatile

EEROM memory.

Per-channel optional insertion of selectable PCM code and

signaling states on all idle channels.

0–250 µs on X, Y, and Z ports.

Less the 3.0 Watts per system

Approximately 5” x 8” (12.7 cm x 20.3 cm).

D-4

Conexant

100060C

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