Instruction manual

61200780L1-1C © 2004 ADTRAN, Inc. 217
ATLAS 800 Series System Manual Async-232 Option Module
Test
Test
Write security: 4; Read security: 5
These options initiate different types of tests and display test results.
Port Read security: 5
Displays the port number.
DTE Local Loopback Loopback can be Enabled or Disabled for a port with this field. When Enabled,
all data received from the DTE by the Async-232 Module port is transmitted
back to the DTE. Loopback state is not saved in the module configuration; and,
Error Correction
Write security: 3; Read security: 5
Configures the error correction for the allocated modem. The following options
are available:
Disabled No error correction is requested. If the remote modem refuses to
support the option, the call is disconnected. Although no error
correction is used, this mode still allows speed matching, data
buffering, and flow control.
Auto-Reliable
Link Mode
Modem will attempt to negotiate LAPM, MNO, or no error
correction with the remote modem. This is the default setting.
Force LAPM
Mode
Modem will attempt to negotiated LAPM error correction with
the remote modem. If it cannot, the call is disconnected.
Force MNP
Mode
Modem will attempt to negotiate MNO error correction with the
remote modem. If it cannot, the call is disconnected.
Data Compression
Write security: 3; Read security: 5
Error correction must be enabled to use data compression; data compression is
automatically disabled if error correction is disabled. The following data
compression options are available:
Disabled Both MNP5 and V.42bis data compression methods are disabled.
MNP5 MNP5 data compression is enabled.
V.42bis V.42bis data compression is enabled.
V.42bis and
MNP5
Both MNP5 and V.42 bis data compression are enabled. This is
the default setting.
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