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COMSPHERE 3900 Series Modems
4-30 November 1996 3910-A2-GN32-30
Dial Line
The Dial Line configuration options are used to configure the modem for operation over dial lines.
Table 4-4 shows each Dial Line configuration option as it appears on the LCD, with the Sync
Leased factory default setting (the default value if the modem is just being installed) shown
following the colon ( : ) on the first line and with all available selections listed on the second line.
Following this is a description of the configuration option. Factory default settings are listed in
Appendix F.
Table 4-4
(1 of 3)
Dial Line Configuration Options
Dial Line Rate: 19200(V32t)
Nxt 19200(V32t) 16800(V32t) 14400(V32b) 12000(V32b) 9600(V32b) 7200(V32b) 4800(V32b)
2400(V22bis) 1200(V22) 1200(212A) 0-300(V21) 0-300(103J) 1200/75(V23) 75/1200(V23)
600/75(V23) 75/600(V23)
Dial Line Rate. This configuration option determines the modem’s data rate and modulation scheme for
operation on dial lines. Online changes do not take effect until a disconnect occurs.
NOTE: Certain changes to this configuration option will cause the modem to reset.
H 19200(V32t), 16800(V32t), 14400(V32b), 12000(V32b), 9600(V32b), 7200(V32b), 4800(V32b)
The modem operates using V.32 terbo, V.32bis, or V.32 modulation at the data rate selected.
H 2400(V22bis), 1200 (V22), 1200(212A)
Modem operates using the modulation and data rate selected.
H 0–300(V21), 0–300(103J)
Modem operates in full-duplex, Asynchronous mode. These data rates do not support V.42 or MNP
error control.
H 1200/75(V23), 75/1200(V23), 600/75(V23), 75/600(V23)
The modem will run in asynchronous semi-full duplex mode at the rate chosen.
The AT command is S-Register S41=
n
, where
n
is:
1 = 14,400 (V.32bis) 6 = 2400 (V.22bis) 12 = 1200/75 (V.23) 20 = 19200 (V.32 terbo)
2 = 12,000 (V.32bis) 7 = 1200 (V.22) 13 = 75/1200 (V.23) 21 = 16800 (V.32 terbo)
3 = 9600 (V.32bis/V.32) 8 = 1200 (212A) 18 = 600/75 (V.23)
4 = 7200 (V.32bis) 10 = 0-300 (V.21) 19 = 75/600 (V.23)
5 = 4800 (V.32bis/V.32) 11 = 0-300 (103J)