Test - Singleport Mode; Test Configuration Options — Singleport Mode - Paradyne COMSPHERE 3920PLUS Technical Reference Manual

V.42/MNP/Buffer Configuration Options — Singleport Mode A
RdcdAsyncBufSiz: Disable
End Disable Enable
This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control
Mode is configured for BufferMode or V42/MNPorBfr.
Reduced Asynchronous Buffer Size. When enabled, the modem's buffer size is limited to a maximum of 20 characters.
The AT command is S-Register S97 = n, where n is 0 for Disable and 1 for Enable.
Test — Singleport Mode
The Test configuration options determine specifics, such as the duration of a test, for the various
diagnostic tests available to the modem.
Table 5-13 shows each Test configuration option as it appears on the LCD, with the Sync Leased
factory default setting (the default value if the modem is just being installed) shown following the
colon ( : ) on the first line and with all available selections listed on the second line. Following this
is a description of the configuration option. Factory default settings are listed in Appendix F,
Default Configuration
DTE RL(CT140): Disable
Nxt Disable Enable V34Special
This configuration option does not appear when the modulation is TMp.
DTE Remote Loopback. Controls the use of Pin 21 of the EIA-232-D/ITU-T V.24 interface by the DTE to initiate a remote
loopback. An Abort command or test time-out ends this test.
Enable – The DTE forces the modem into remote loopback when the signal on Pin 21 (CT140) is turned ON. Remote
Loop ends when the signal is dropped.
Disable – The DTE does not initiate remote loopback in response to the signal on Pin 21.
V34Special – The DTE forces the modem into remote loopback when the signal on Pin 21 (CT140) is turned ON; the
modem waits for LSD to drop before raising Test Indicate (Pin 25, CT142). Remote Loop ends when the signal is
dropped.
The AT command is S-Register S51 = n, where n is 0 for Disable, 1 for Enable, and 2 for V34Special.
DTE LL(CT141): Disable
Nxt Disable Enable Fast
DTE Local Loopback. Controls the use of Pin 18 of the EIA-232-D/ITU-T V.24 interface by the DTE to initiate a local
loopback. An Abort command or test time-out ends this test.
Enable – The DTE forces the modem into local loopback when the signal on Pin 18 (CT141) is turned ON. Local
loopback ends when the signal is dropped.
Disable – The DTE will not initiate local loopback in response to the signal on Pin 18.
Fast – The DTE forces the modem into local loopback when the signal on Pin 18 (CT141) is turned ON. If the modem is
online, the modem waits for LSD to drop before raising Test Indicate (Pin 25, CT142). Test Mode messages are not
transmitted. Local loopback ends when the signal is dropped.
The AT command is S-Register S52 = n, where n is 0 for Disable, 1 for Enable, and 2 for Fast.
3920-A2-GH30-40
Table 5-12
(8 of 8)
A
Options.
Table 5-13
(1 of 2)
Test Configuration Options — Singleport Mode A
October 1998
Configure Branch
5-71