ZyXEL Communications 2864 Series, User Manual, Page: 136 / 267

12–2
Power Level
The modem's leased-line mode transmission power level can be adjusted from 0
dBm to -27 dBm in 1 dBm increments. If a dial-up model is used for 2-wire leased-
line connection, the transmission power is limited to -9dBm for the Omni 288P
and to -3dBm for the Omni 288S.
Handshake Mode
In a typical dial-up connection, the originating modem dials the number and waits
for the answering modem's carrier signal. The answering modem can answer the
call after a specified number of rings, or be commanded to answer immediately.
In a leased-line connection, the communication circuit between two modems is al-
ways present. Dialing and waiting for rings does not occur in this situation. If these
two modems want to establish a data link, one must be designated as the originator
and the other as the answerer. You can set this manually or automatically.
Manual Connection
Set the modem to leased-line mode. Type the asynchronous command
ATD
to the
originating modem and
ATA
to the answering modem, or press O on the IDLE
SCREEN menu of the originating modem and press A on the IDLE SCREEN of the
answering modem. On an LED model, press the VOICE/DATA switch to make the
modem go off-hook and on-line and use the ORG/ANS switch to select originate or
answer mode. For the Omni models, use
AT*Mn
or set
S14b0
to select originate
or answer mode.
LLINE TX
POWER
AT*P0
…
AT*P15
The default is -9 dBm. The adjustable range is
from 0 to -15 dBm, effective in leased
- line op-
eration only. If bit 3 of S35 is set, this range
will change to -12 to -27 dBm.