ADTRAN 1200182L1, Руководство пользователя

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Async-232 Module Submenus Chapter 3. Operation
Test
61200182L1-1 Async-232 Module User Manual 3-15
Test
Read security: 5
Controls activation of individual port tests.
The execution of port tests disrupts normal data flow in the port being tested.
DTE Local Loopback
Write security: 4; Read security: 5
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, if the card
is hot swapped or the ATLAS system restarted, loopback is disabled on all ports.
It is not necessary to have a Dial Plan entry for a port to enable loopback.
Highest Bit Rate Selects the highest bit rate the allocated modem will
attempt to connect with to the remote modem. Modulation
scheme is automatically selected based on the connection
speed.
Lowest Bit Rate Selects the lowest bit rate the allocated modem will attempt
to connect with to the remote modem. If the lowest bit rate
or higher cannot be negotiated with the remote modem,
the call is disconnected. Modulation scheme is automati-
cally selected based on the connection speed.
Error Correction
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, MNP, or no error
correction with the remote modem. This is the default set-
ting.
Force LAPM
Mode Modem will attempt to negotiate LAPM error correction
with the remote modem. If it cannot, the call is discon-
nected.
Force MNP
Mode Modem will attempt to negotiate MNP error correction
with the remote modem. If it cannot, the call is discon-
nected.
Data
Compression Error correction must be enabled to use data compression;
data compression is automatically disabled if error correc-
tion is disabled.
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.42bis data compression are enabled.
This is the default setting.