Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Navigation
Guide That Contains This Content
[+] Expand All
[-] Collapse All

    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

    G.729AB

    8 kbps

    30

    10

    1

    8

    7

    G.711

    64 kbps

    Modified: 2012-07-25