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[General_Technical_Information]
Below is the protocol and codecs supported by the Gafachi network, as well as some notes on compatibility.
Protocol: SIP
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Codecs:
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Supported Features:
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G.711 ulaw
G.711 alaw
G.729
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DTMF (RFC2833 by default)
DTMF (RFC4733 by request)
CLI (Calling Party Number / Caller ID)
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By default our network requires SIP calls to be authenticated via MD5. If your equipment/software is incapable of this, and you would like IP-based authentication to be configured, you can configure this, once logged in, by following the link for "Setup IP-based Authentication".
Fax Support:
Gafachi offers 3 modes of fax support:
NONE - (default) Upon detecting a fax tone, no re-INVITE will be sent.
TRANSPARENT - Upon detecting a fax tone, if the codec is not already G.711 ulaw, a re-INVITE will be attempted to switch to G.711 ulaw
T.38 - Upon detecting a fax tone, our network will send a re-INVITE to attempt to switch to T.38. If the re-INVITE fails, a re-INVITE will be sent to attempt to switch to G.711 ulaw if the codec is not already G.711 ulaw.
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