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Home > Support > Technical Documentation > Calculating Resource Usage on Voice Compression Modules Overview
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Related Documentation

  • Voice Compression Module Overview
  • Configuring Compression Parameters for VComp Bundles (CTPView)
  • Configuring Compression Parameters for VComp Bundles (CTP Menu)
 

Calculating Resource Usage on Voice Compression Modules Overview

The voice compression module must have enough resources available to process VComp bundles. The number of channels and the voice compression features that you enable on a bundle each consume processing resources on the module. Each module has a processing resource of 950 units. Table 1 shows the processing resources used by each compression technique and by each compression option.

For example, suppose you configure a VComp bundle with 16 channels and G.729AB compression, and you enable echo cancellation, silence suppression, fax/modem relay, and tone relay. You calculate voice compression usage as follows:


16 x (30 + 13 + 1 + 7 + 8) = 944

The outcome of 944 can be handled by one voice compression module if there are no other bundles using the module.

Table 1: Compression Options and Voice Compression Module Usage

Compression Technique

Rate/Channel

Compression

Echo Cancellation

Silence Suppression

Fax/Modem Relay

Tone Relay

PCM

64 kbps

3

6

1

5

4

MELP (Mixed Excitation Linear Prediction)

2.4 kbps

55

6

1

5

4

G.729.AB

8 kbps

30

10

1

8

7

G.728

16 kbps

61

13

1

9

11

G.726_16K

16 kbps

13

7

1

5

5

G.726_24K

24 kbps

13

7

1

5

5

G,.726_32K

32 kbps

13

7

1

5

5

G.726_40K

40 kbps

13

7

1

5

6

 

Related Documentation

  • Voice Compression Module Overview
  • Configuring Compression Parameters for VComp Bundles (CTPView)
  • Configuring Compression Parameters for VComp Bundles (CTP Menu)
 

Published: 2010-10-27


 
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