User`s guide

VoiceFinder AP1100 VoIP Gateway User’s Guide Version 1.1
AddPac Technology Co., Ltd. -
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answering fax machine. The VoIP H.323 call stack then starts a T.38 mode
request using H.245 procedures. If the opposite end of the call acknowledges
the T.38 mode request, the initial audio channel is closed and a T.38 fax relay
channel is opened. When the fax transmission is completed, the call reverts to
voice mode.