User's Guide

AT Commands and S-Registers
4-193821-A2-GB20-30 February 1998
Table 4-2
(4 of 10)
3821
Plus S-Registers
S41 – Dial-Line Rate
Determines the modem’s highest data rate and modulation scheme for operation on dial lines. S41 can also be set using
the %B and %BL commands.
Register has the following values (shown in bps):
1 = 14,400 (V.32bis)
2 = 12,000 (V.32bis)
3 = 9600 (V.32bis/V32)
4 = 7200 (V.32bis)
5 = 4800 (V.32bis/V.32)
6 = 2400 (V.22bis)
7 = 1200 (V.22)
8 = 1200 (212A; invalid for UK)
10 = 0–300 (V21)
11 = 0–300 (103J; invalid for UK)
20 = 19,200 (V.32
terbo )
21 = 16,800 (V.32
terbo )
27 = 33,600 (V.34)
28 = 31,200 (V.34)
29 = 28,800 (V.34)
30 = 26,400 (V.34)
31 = 24,000 (V.34)
32 = 21,600 (V.34)
33 = 19,200 (V.34)
34 = 16,800 (V.34)
35 = 14,400 (V.34)
36 = 12,000 (V.34)
37 = 9600 (V.34)
38 = 7200 (V.34)
39 = 4800 (V.34)
40 = 2400 (V.34)
Factory setting is 33,600 (V.34).
S43 – Train Time
Register controls the modem’s train time for V.34, V.32 terbo , V.32bis, and V.32 mode.
Register has the following values:
0 = Long (A long train is required for satellite links which have long roundtrip delays.)
1 = Short
Factory setting is Long.