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T.38 Fax Support
VoIPTREX LLC 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.
Contact us if you have questions on T.38 fax support.