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3-373821-A2-GB20-30 February 1998
Leased Line
The Leased Line configuration options are used to
configure the modem for operation over leased lines.
The Leased Line configuration group only appears if
the modem is configured with the Sync Leased factory
preset template, or if the &L1, &L2, &L3, or &L4
command is entered.
Table 3-8 shows each Leased Line configuration
option as it appears on the LCD.
Table 3-8
(1 of 2)
Leased Line Configuration Options
Leased Mode: 2WLL-Orig
Nxt 2WLL-Orig 2WLL-Ans
Leased Mode. Sets the modem for either Answer mode (receiving a call) or Originate mode (initiating a call).
NOTE: For proper operation over leased lines, one modem must be set for Originate mode, and the other modem must
be set for Answer mode.
The factory default is 2WLL-Orig.
AT command equivalent is &L
n
.
Modulation: V34
Nxt V34 V32bis/terbo V22bis
Modulation determines the modem’s primary leased line modulation group: V.34, V.32bis and V.32
terbo
, or V.22bis.
The factory default is V34 (V.34 modulations).
LeasedLine Rate: 33600(V34)
Nxt 33600(V34) 31200(V34) 28800(V34) 26400(V34) 24000(V34) 21600(V34) 19200(V34) 16800(V34)
14400(V34) 12000(V34) 9600(V34) 7200(V34) 4800(V34) 2400(V34)
- OR -
Nxt 19200(V32t) 16800(V32t) 14400(V32b) 12000(V32b) 9600(V32b) 7200(V32b) 4800(V32b)
- OR -
Nxt 2400(V22bis)
Leased-Line Rate. Determines the modem’s data rate and modulation scheme for operation on leased lines. In Async
mode, the DTE rate must equal the leased-line rate. Leased Line Rate sets the upper limit rate and modulation; lower
speed connections may still be possible and the modem can still be commanded to fall back by a remote modem.
What Leased Line Rate configuration options are displayed depends on the setting of Modulation.
33600(V34), 31200(V34), 28800(V34), 26400(V34), 24000(V34), 21600(V34), 19200(V34), 16800(V34), 14400(V34),
12000(V34), 9600(V34), 7200(V34), 4800(V34), 2400(V34) – The modem operates using V.34 modulation at the data
rate selected. The change does not take effect until the modem is reset.
19200(V.32t), 16800(V32t), 14400(V.32bis), 12000(V.32bis), 9600 (V.32bis), 7200(V.32bis), 4800(V.32bis) – The
modem operates using V.32
terbo
or V.32bis modulation at the data rate selected.
2400(V.22bis) – The modem operates using V.22bis modulation at 2400 bps.
NOTE: It is recommended that both modems use the same fixed data rate.
The factory default is 33600(V34).
AT command equivalent is S-register S44=
n.