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Modemulator User Guide
Appendix L: Leased Line Operation
The
&L1 command
may be used to emulate the behavior of analog leased line modems. One Modemulator
must be designated as originator, while the other Modemulator must be the answerer (Listener). The
answerer must have autoanswer enabled (S0 greater than zero), and the originator must have S0 set to
zero.
The User should decide whether response codes will be displayed, and set the Q command appropriately.
Register S44 determines how many seconds after a disconnect that the originating Modemulator waits
before attempting to reconnect with the answering Modemulator.
When the
&L1 command
is issued to the originating Modemulator, it will attempt to connect with the
answering Modemulator using the last dialed number, similar to issuing ATDL. It is, therefore, necessary
to issue ATDn (where n is the desired phone number in the directory), or ATD:n (where n is the desired IP
address) one time to populate the Last Dialed Number area. This means that the
&L1 command
also
emulates the behavior of auto-redial.
If there is ever a disconnect, such as "DISC Received", "Loss of Carrier" or "Link Timeout", the originating
Modemulator will wait S44 (default=15) seconds, and attempt to reconnect, repeating indefinitely.
To disable leased line operation, enter the escape code (default is +++) or de-assert the RS-232 DTR
signal to the originating Modemulator to cause a disconnect, then enter the
&L0 command
before the
Modemulator attempts to reconnect.
Page 104 of 113
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