NetComm IG6000 - Manual (Page 12)

Industrial Modem User Guide
YML391­3A 12
When the terminal asserts the DTR signal (DTR makes an OFF­ON transition), your modem will dial stored phone
number zero. The phone number may contain dial modifiers.
To return to asynchronous mode:
· Type: AT&M0 <E>
Your modem will remain in asynchronous mode.
Leased Line Operation
A leased line, or private line, is a telephone line that permanently connects two or more locations. The leased line
does not have any switching equipment associated with it.
Leased­line operation with the modem is selected with the &L command.
If you select leased line operation with the &L1 command, you must issue the ATA command to answer a call, and
the ATD command to initiate a call.
If you use &L2 or &L3 to select Auto leased line operation, you do not need to issue the ATA or ATD commands;
&L2 selects Originate mode automatically and &L3 selects Answer mode automatically. To dial or answer, raise
DTR; to hang up and return to local command state, lower DTR.
+ You will require a special phone cable (available from your dealer) to connect your modem to a leased­
line socket. The phone cable supplied with your modem is suitable for use with normal, dial­up, voice (PSTN)
lines.
Before commencing leased­line communications, it is recommended that a non­auto­ranging B setting be specified.
+ If error correction is required, select a Reliable mode, not an Auto­Reliable mode. (See the \N command.)
Auto­ranging and fallback are disabled in leased­line mode. Your modem will only attempt to connect using the
communications standard specified by the B command and the terminal speed.
Once a connection has been established, if your modem detects a loss of carrier it will continuously attempt to re­
establish the connection.
If the modem is in auto leased­line operation and this configuration has ben stored in memory using the AT&W
command, a timeout period of 10 seconds is available after power up to disable the leased­line mode via the AT&O
command. Alternatively, this command can be sent with DTR low.