Intel MD566X User Manual
Page 69
56K V.92 Data, Fax, and Voice Chipset
Programmer’s Guide
Intel Confidential
69
\Qn
3
Set Serial Port Flow Control: This command specifies the DTE-to-modem flow
control. Software flow control uses the XOFF (13h) command to stop and the XON
(11h) characters to start data transmission, both to and from the DTE. Unidirectional
hardware flow control uses the CTS control line to stop or start data from the DTE
only, while bidirectional hardware flow control also uses the RTS control to stop or
start data from the modem.
n = 0–3
n = 0
Disables flow control
n = 1
XON/XOFF software flow control
n = 2
Unidirectional hardware flow control — CTS
n = 3*
Bidirectional hardware flow control — RTS/CTS
\Tn
0
Set Inactivity Timer: During a buffer (normal) or reliable connection, if no data is
sent or received within the inactivity time period, the link is disconnected. The de-
fault, ‘0’, disables this feature.
n = 0–90
Length in minutes
n = 0*
Disables inactivity timer
\U
none
Accept Auto-Reliable Link: In buffer (normal) mode (\N0 or \N1), the modem at-
tempts to answer an MNP link request, regardless of whether the modem originated
or answered the telephone call (physical connection). The remote modem must orig-
inate the MNP link request for the link to be established (refer to the preceding \O
command).
\Xn
0
Set XON/XOFF Pass-Through: If software flow control is enabled (\Q1), this com-
mand defines whether the XON (11h) and XOFF (13h) characters received from the
DTE are sent to the remote modem. In addition, if the modem port flow control is en-
abled (\G1) in normal mode, the command specifies whether the XON and XOFF
characters received from the remote modem are sent to the DTE. In both cases, flow
control operation is not affected.
n = 0, 1
n = 0*
Processes flow control characters *
n = 1
Processes flow control characters and passes them through to the
local or remote so they can process the characters.
\Y
none
Switch to Reliable Mode: In buffer (normal) mode (\N0 or \N1), the modem at-
tempts to originate or answer an MNP link request, depending on whether the mo-
dem originated or answered the physical connection, respectively. The remote mo-
dem must attempt to answer/originate the MNP link for the link to be established.
\Z
none
Switch to Buffer Mode: During an MNP link, the modem disconnects the link (exit
error correction/data compression) and changes to buffer mode without disconnect-
ing the modem-to-modem connection.
Table 4-2.
V.44 / V.42 / V.42 bis and MNP Data Mode Command Descriptions