VoIP Codecs

Discussion in '3CX Phone System - General' started by andymars, Jun 22, 2010.

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  1. andymars

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    Does 3cx or does anyone know of a guide explaining the differences between the widely-available VoIP codecs?
    I'm looking in particular at a quality vs bandwidth scale for the following:
    PCMU (u law)
    PCMA (a law)
    G723.1
    G726
    G729
    G722
     
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  2. LeonidasG

    LeonidasG Support Team
    Staff Member 3CX Support

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    Hi,

    You can find a lot of that information on google just by searching for "VoIP Codecs".

    Here's something i found: http://www.ozvoip.com/voip-codecs/
     
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  3. andymars

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    Thanks that's one of the best pages i've seen. Any particular recommendations from anyone?
     
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  4. carolinainnovative

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    It just depends on what you're looking for...

    If you're low on bandwidth, G729 does a good job for much less bandwidth. If you have the bandwidth, U-LAW/A-LAW are great because they have the best voice clarity.

    I don't know much about the GSM codec but I imagine it is somewhere in the middle between the two.
     
  5. LeonidasG

    LeonidasG Support Team
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    It's as you said, though personally i hate the GSM Codec as whenever i use it, it simply sounds awful compared to everything else.
     
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