28 Leased Line Operation
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 the A/O button on the front panel of the
originating modem in, and press the A/O button on the front panel
of the answering modem out. 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. Please remember to set the handshake mode before you
save the configuration. Be sure that one modem is set to originate
mode and the other to answer mode.
AT-Command Description
AT*M0 When operating over a leased line, modem will
handshake in originate mode. (Default)
AT*M1 When operating over a leased line, modem will
handshake in answer mode.
Aborting from Leased-Line Operation
If the leased line has not been connected, pressing the D/V switch
on the front panel will drop the line and re-attempt to connect to
the leased line.
To Next Page
Loading...
