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4

Table 1

(3 of 4)

New Features and Changes

Feature or

Configuration 

Option

Notes

%B

n

Modulation and

Data Rate

Sets the modulation and maximum VF rate.

The %B300 and %B1200 commands work in conjunction
with the B (CCITT/ Bell Mode) command to determine
modulation.

%B19200

V.32

terbo

, maximum rate 19,200 bps

%B16800

V.32

terbo

, maximum rate 16,800 bps

%B14400

V.32bis, maximum rate 14,400 bps

%B12000

V.32bis, maximum rate 12,000 bps

%B9600

V.32bis/V.32, maximum rate 9600 bps

%B7200

V.32bis, maximum rate 7200 bps

%B4800

V.32bis/V.32, maximum rate 4800 bps

%B2400

V.22bis. maximum rate 2400 bps

%B1200

V.22 or Bell 212A, maximum rate 1200 bps

%B300

V.21 or Bell 103, maximum rate 300 bps

Modulation and Data Rate can also be set using
S-Register S41. The following table shows the equivalent
values of S41 for each %B

n

 value, and, where applicable,

%B

n

 in combination with B

n

.

S41=20

%B19200

V.32

terbo,

 19,200 bps

S41=21

%B16800

V.32

terbo,

 16,800 bps

S41=1

%B14400

V.32bis, 14,400 bps

S41=2

%B12000

V.32bis, 12,000 bps

S41=3

%B9600

V.32bis/V.32, 9600 bps

S41=4

%B7200

V.32bis, 7200 bps

S41=5

%B4800

V.32bis/V.32, 4800 bps

S41=6

%B2400

V.22bis. 2400 bps

S41=7

%B1200/B0

V.22, 1200 bps

S41=8

%B1200/B1

Bell 212A, 1200 bps

S41=10

%B300/B0

V.21, 300 bps

S41=11

%B300/B1

Bell 103J, 300 bps

The factory default is %B19200.

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