Tone Relay Detects and Regenerates signaling tones

ADT TONE RELAY SIGNALING TONE Passer C54x , C55x , C64x

DESCRIPTION

Adaptive Digital’s Tone Relay is a carrier class Signaling Tone passer that provides exceptional channel densities. The ADT Signaling Tone Relay detects Signaling tones such as DTMF, MF R1, R2 Forward, R2 Reverse, Call Progress signals, passes coded tone information to the other end of the channel, and regenerates signaling tones. Adaptive Digital’s proprietary algorithm is robust enough to meet Bellcore GR-506, and ITU Q455 recommendations while using few CPU cycles and has a low memory requirement.

A DTMF suppressor is included to suppress DTMF tones in Voice-Over-Packet systems that employ tone passing via out-of-band signaling. This is useful when a low rate speech compression algorithm is unable to pass the DTMF tones without significant distortion. Other signaling tone types are muted, as they do not occur along with speech signals.

Data sheet - adt_tone-relay.pdf

FEATURES

Meets Bellcore GR506, ITU Q455 specifications
Robust detection
Low per-channel memory requirements
Low false alarm rate
C-callable
Designed for multi-channel operation
Programmable Frame Size

AVAILABILITY

ADT Tone Relay is available on the TMS320™ DSP Family

C54x™DSP, C55x™DSP, & C64x™DSP Generations

SPECIFICATIONS

TONE RELAY C54x

All Memory usage is given in units of 16-bit word.

LOW Memory					LOW MIPS
Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
TR Detect	1.81	639	16	40	0.66	1609	207+	43
TR Generator	0.41	2361	384	59	0.38	383	227+	28
DTMF	--¹	607	40	55	--¹	601	1704	72
MFR1	0.69¹	587	66	55	0.3¹	593	1626	72
MFR2_F	0.92¹	551	60	55	0.3¹	492	828	72
MFR2_R	0.92¹	551	60	55	0.3¹	492	828	72
Cprg	0.55¹	610	32	55	0.3¹	576	1496	72
Common	--	689	16	--	--	597	16	--

¹ the detector MIPS (TRDetect) include the DTMF detector MIPS. When other detectors are enabled, the total TRDetect MIPS increases by the amount indicated.
+ 207 words are shared between detector and generator library

Last update: 01/17/2005

TONE RELAY C55x

All Memory usage is given in units of byte.

Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
TR Detect	0.57	2636	--	120
TR Generator	0.28	519	40	56
TR Common	--	671	400	--
DTMF	--	1311	3412	152
MFR1	--	1228	3256	152
MFR2_F	--	1133	1660	152
MFR2_R	--	1133	1660	152
Cprg	--	1290	2996	152
Common	--	1369	32	--

The MIPS (Detector + Regenerator) estimation was done when only DTMF signals were looked for. Adding other tone types adds 0.3MIPS approx to the detector part. However the generator MIPS remain the same

Last update: 06/28/2009

TONE RELAY C64x

All Memory usage is given in units of byte.

Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
TR Detect	0.48	6208		120
TR Generator	0.13	1088	336	56
TR Detect & Generate Common	--	--	416	--
DTMF	--	2176	3710	164
MFR1	--	1440	3272	164
MFR2_F	--	1248	1736	164
MFR2_R	--	1248	1736	164
Cprg	--	1408	2992	164
Common	--	2592	0	--

Last update: 06/30/2009

FUNCTION

TRLOWMEM_ADT_dtInit(. . .) TRLOWMEM_ADT_toneDt(. . .)

TRLOWMEM_ADT_genInit(. . .) TRLOWMEM_ADT_callToneGen(. . .)