V.17

14400/12000/9600/7200

Fax

HDX

2W

128QAM

V.21 (Bell 103)

0-300

Async

FDX

2W

FSK

V.21 Ch.2

300

Fax

HDX

2W

FSK

V.22

1200

Sync/Async

FDX

2W

DQPSK

V.22bis

2400

Sync/Async

FDX

2W

16QAM

V.23

1200/600 - 75

Async

HDX

2W

FSK

V.26

2400

Sync

FDX

4W

DQPSK

V.26bis

2400/200

Sync

HDX

2W

DQPSK

V.26ter

2400

Sync

FDX

2W

DQPSK

V.27

4800

Sync

FDX

4W

D8PSK

V.27bis

4800/2400

Sync

FDX

4W

D8PSK

V.27ter

4800/2400

Fax

HDX

2W

D8PSK

V.29

9600

Fax

FDX

4W

16QAM

V.32

9600/7600/4800

Sync/Async

FDX

2W

Trellis coded 32/16/4QAM

V.32bis

14400/12000/9600/

7200

Sync/Async

FDX

2W

Trellis coded 128/64/32/

16QAM

V.34

Up to 33600

Fax/Sync/Async

FDX

2W

Trellis coded QAM

V.90

Down: 56000

Up: 33600

Async

FDX

2W

Down: PCM, digital

Up: V.32 analogue

V.92

Down: 56000

Up: 33600

Async

FDX

2W

Down: PCM, digital

Up: V.32, analogue.

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