FAX COMMUNICATION FEATURES
A265/A267 2-22 SM
Two-step Shift-down from the Sending Terminal
The diagram shows the protocol used by this model acting as the sending terminal.
If this machine has received four PPRs for one ECM block, it will request the
receiving terminal to accept a two-step shift-down in the next control channel.
MCF/
PPR
Fax data
Fax data
MCF
MPh
PPR
TX RX
Shiftdown
Fax data
PPR
Fax data
PPR
Fax data
PPR
MPh
Fax data
4
3
2
1
33.6kbps
33.6kbps
33.6kbps
33.6kbps
33.6kbps
28.8kbps
A895D533.WMF
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