both sides support SIP-based T.38.

Note:

If VG3300 connects different SIP devices, some have T.38, but some use G.711 codec only, then user should enable G.711 codec support for FAX. Setup method is listed below:

1.The same step as above set Connect Device to Fax

2.Setup “Codecs Type“, Web Folder: ADVANCED\SIP COMMON

Select and mark “PCMU” and “PCMA” Codecs (G.711 Standard), than click “Apply” button

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