Paradyne COMSPHERE 3920Plus Technical Reference Manual page 146

COMSPHERE 392xPlus Modems
V.42/MNP/Buffer Configuration Options — Singleport Mode A
Sync Flow Cntrl: Tx_Clock
Nxt Tx_Clock None CTS_SyncDTE
This configuration option only appears when the Async/Sync Mode configuration option is set is to Sync and
Sync Comp Mode configuration option is not set to DirectMode.
Synchronous Flow Control. Controls the type of synchronous data flow control while using data compression.
Tx_Clock – The transmit clock (circuit 114/Pin 15) clamps when the modem is unable to accept supplementary data
from the DTE.
NOTE: Tx_Clock only appears when the Tx Clock Source configuration option is set to Internal and the
Dual_Leased_Ln configuration option is disabled, or when both the Tx Clock Source and Bakup_TXClk_Src are
set to Internal and Dual_Leased_Ln is enabled.
None – Modem does not control the flow from the synchronous DTE.
CTS_SyncDTE – CTS signal (circuit 106/Pin 5) is set to OFF when the modem is unable to accept supplementary data
from the DTE.
The AT command for None is #Q0.
The AT command for Tx_Clock is #Q1.
The AT command for CTS_SyncDTE is #Q2.
BuffrDiscDelay: 10sec
Nxt 10sec Disable 60sec
This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control
Mode is not configured for DirectMode, or when Async/Sync Mode is configured for Sync and Sync Comp Mode
is not configured for DirectMode.
Buffer Disconnect Delay. Determines how long the modem continues to transmit data stored in its buffers when the
modem is commanded to disconnect by a locally attached DTE. This also applies to the modem's receiving buffers
when it is commanded to disconnect from a remote modem or DTE.
Disable – Modem disconnects immediately without attempting to send data stored in its buffers.
10, 60 sec – Maximum amount of time the modem tries to empty its buffers before disconnecting. In both cases (10 sec
and 60 sec), the modem disconnects much sooner if it can empty its buffers.
The AT command is S-Register S49 = n, where n is 0 for Disable and any value from 1 to 255 in 1 second increments.
Max Frame Size: 256
Nxt 256 192 128 64 32 16
This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control
Mode is not configured for BufferMode or DirectMode, or when Async/Sync Mode is configured for Sync and
Sync Comp Mode is not configured for DirectMode.
Maximum Frame Size. Sets the maximum frame size for V.42 and MNP. For V.42 operation, 256 is the maximum value.
Any value which exceeds this will automatically default to 128 for V.42. For MNP operation, 64 is the minimum value.
Any value less than that will automatically default to 64. For cellular applications, at least one of the sides should be set
to a low value. A setting of 32 is recommended. Only one modem needs this setting; both modems will automatically
default to the greatest common value.
The AT Command for 256 is \A3.
The AT Command for 192 is \A2.
The AT Command for 128 is \A1.
The AT Command for 64 is \A0.
The AT Command for 32 is \A4.
The AT Command for 16 is \A5.
5-70
Table 5-12
(7 of 8)
October 1998 3920-A2-GH30-40