ZyXEL Communications U-336R, User Manual

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36 Leased Line Operation
Power Level Setting
Your modem’s leased-line mode transmission power level can be
adjusted from 0 dBm to -27 dBm in 1 dBm increments.
AT-Command Description
AT*P0
. . .
AT*P15 The default is -9dBm. The adjustable range is
from 0 to -15dBm, effective in leased-line
operation only. If bit 3 of S35 is 8set, this range
will change to -12 to -27dBm.
Leased Line Handshaking
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 be commanded to either answer the call
immediately, or after a specified number of rings.
In a leased-line connection, the communication circuit between two
modems is always 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 Connect
Set the modem to leased-line mode. Type the asynchronous
command ATD to the originating modem and ATA to the
answering, or press O on the RS1612 control panel for originating
mode and then press A for answer mode. Use AT*Mn or set
S14b0 to select originate or answer mode.
Auto Handshake
If you want handshaking to occur automatically upon power-up,
you have to save the leased-line configuration to the power-on
profile. Remember to set the handshake mode before you save the