B Technical Specifications

Data Modulation

FSK at 300 bps

 

 

 

PSK at 1200 bps

 

 

 

QAM at 2400, 4800, and 9600 bps (non-trellis);

 

QAM with trellis-coded modulation (TCM) at 9600; 12,000;

 

14,400; 16,800; 19,200; 21,600; 24,000; 26,400; 28,800;

 

31,200; 33,600; 34,000; 38,000; 46,000, 54,000 and

 

56,000 bps

 

 

Fax Modulation

V.21 CH2 FSK at 300 bps (half duplex)

 

V.27ter DPSK at 4800 and 2400 bps

 

V.29 QAM at 9600 and 7200 bps

 

V.17TCM at 14400, 12000, 9600, and 7200 bps

Carrier Frequencies

1600, 1646, 1680, 1800, 1829, 1867, 1920, 1959, 2000 Hz

V.34

 

 

 

Carrier Frequencies

1800 Hz

 

 

V.32, V.32bis, V.32terbo

 

 

Carrier Frequencies

Transmit originate: 1200

Hz

V.22,V.22bis or

Transmit answer:

2400

Hz

Bell 212A Standard

Receive originate:

2400

Hz

(2400 &1200 bps)

Receive answer:

1200

Hz

Carrier Frequencies

Transmit originate:

390

Hz mark

V.23 (1200 bps)

 

450

Hz space

 

Receive originate:

1300

Hz mark

 

 

2100

Hz space

 

Transmit answer:

1300

Hz mark

 

 

2100

Hz space

 

Receive answer:

390

Hz mark

 

 

450

Hz space

Carrier Frequencies

Transmit originate:

980

Hz mark

V.21 (0-300 bps)

 

1180

Hz space

 

Receive originate:

1650

Hz mark

 

 

1850

Hz space

 

Transmit answer:

1650

Hz mark

 

 

1850

Hz space

 

Receive answer:

980

Hz mark

 

 

1180

Hz space

Carrier Frequencies

Transmit originate: 1270

Hz mark

Bell 103/113

 

1070

Hz space

(0–300 bps)

Receive originate:

2225

Hz mark

 

 

2025

Hz space

 

Transmit answer:

2225

Hz mark

 

 

2025

Hz space

 

Receive answer:

1270

Hz mark

 

 

1070

Hz space

Fax Carrier

V.21 Ch2 (half duplex):

 

Frequencies

1650 Hz mark, 1850 Hz space for transmit originate

 

1650 Hz mark, 1850 Hz space for transmit answer

 

V.27ter: 1800 Hz originate/answer

 

V.29 QAM: 1800 Hz originate/answer

 

V.17 TCM: 1800 Hz originate/answer

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