VOIP Codec Information

Codec

Bitrate (kbps)

Notes

PCMU
u-law
g711u
64 High Quality / Bandwidth
Default Codec in most ATAs
PCMA
a-law
g711a
80-96 High Quality / Bandwidth
g723 24-40
g729 8
g726 32
iLBC 8
GSM 13 Default Zoiper Codec

Note: If connecting with Zoiper resolves phone quality / dropping issues, then the issue may be related to low bandwidth / high intermittent ping.  May want to try a different codec on the ATA.

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