G.165 Modem Tone Detect

G.165 Tone Detect

FAX / Modem G.165 (2100 HZ) Tone Disable

In telecommunications systems, it is often necessary to detect the presence of a voice-band modem signal.

Platforms

ADT G.165 is available on the TMS320™ DSP Family C54x™DSP, C55x™DSP Generations

Features

  • Functions are C-callable
  • Multiple channel operation
  • Low per-channel memory requirements
  • Parameters are user configurable

Description

In telecommunications systems, it is often necessary to detect the presence of a voice-band modem signal. In particular, when using a line echo canceller, it is desirable to disable certain aspects of echo cancellers or echo suppressors. Modems therefore precede their transmissions with a disable tone. These tones are described in ITU recommendations G.164 and G.165.

 

The ADT G.165 Tone Detector detects both of the aforementioned disable tones.

Specification Tables

NOTE: We specify MIPS (Millions of Instructions Per Second) as MCPS (Millions of Instruction Cycles Per Second). Unless otherwise specified, peak MIPS are indicated.
↓  Click on links below to view specification tables. 

G.165 C55x

CPU UTILIZATION & MEMORY REQUIREMENTS
All Memory usage is given in units of byte.
SoftwareMIPS (Peak)Program MemoryData MemoryPer-channel Data Memory
Tone Disabler0.08161835288

Linux x86 64 bit 

Contact Sales for specifications.

+1 (610) 825-0182 x120

sales@adaptivedigital.com

API Functions

API function call summary

G165DET_ADT_initG165Detect(…) Initializes G165 Detector channel

G165DET_ADT_g165Detect (…) ExecutesG165 detector function

G165DET_ADT_g165ReleaseCheck(…) Executes G165 Release Check

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