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AT Commands and S-Registers
4-213825-A2-GB30-20 November 1996
Table 4-2
(5 of 10)
3825
Plus
S-Registers
S44
Leased-Line Rate
Determines the modem’s highest data rate and modulation scheme for operation on 2-wire leased lines in either Answer
or Originate mode.
Register has the following values (shown in bps):
1 = 14,400 (V.32bis)
2 = 12,000 (V.32bis)
3 = 9600 (V.32bis)
4 = 7200 (V.32bis)
5 = 4800 (V.32bis)
6 = 2400 (V.22bis)
18 = 19,200 (V.32
terbo
)
19 = 16,800 (V.32
terbo
)
25 = 33,600 (V.34 proprietary extension)
26 = 31,200 (V.34 proprietary extension)
27 = 28,800 (V.34)
28 = 26,400 (V.34)
29 = 24,000 (V.34)
30 = 21,600 (V.34)
31 = 19,200 (V.34)
32 = 16,800 (V.34)
33 = 14,400 (V.34)
34 = 12,000 (V.34)
35 = 9600 (V.34)
36 = 7200 (V.34)
37 = 4800 (V.34)
38 = 2400 (V.34)
NOTE: Turn your modem off and on after setting S44 for the setting to take effect.
The factory setting is 28,800 (V.34).
S45 – Leased Line Transmit Level
Level determines the modem’s transmit power output level over leased lines.
Enter a value from 0–15 dBm.
The factory setting is 0 dBm for North America, –1 dBm for Turkey
,
–7 dBm for Belgium and Singapore, –9 dBm for
Switzerland, –10 dBm for Netherlands, Norway, and Sweden, –11 dBm for Denmark and Finland, –12 dBm for France,
and
–15 dBm for Germany and Japan. See Appendix F.
S48 Leased Line Carrier On Level
Determines if the modem disconnects if the carrier signal on leased lines falls below –26 dBm or –43 dBm.
Register has the following values:
0
= –43 dBm
1 = –26 dBm
2 = –33 dBm
The factory setting is –43 dBm for all countries except France, for which it is –33 dBm. See Appendix F.