Filter
Top Products
56K V.92 Data, Fax, and Voice Chipset
Programmer’s Guide Intel Confidential 77
+FRH=n
(cont.)
Receive HDLC Data: (cont.)
The modem obeys the configured flow control from the DTE. If the DTE sends any
character to the modem other than DC1 or DC3 while the modem is in this mode,
the modem enters command mode and return an ‘OK’ result code.
After sending the result code indicating that frame reception is complete, the mo-
dem continues to receive and buffer the data in the selected mode. If the DTE is-
sues another +FRH=<mod> command, the modem returns another “CONNECT”
result code and continues with HDLC reception. If the DTE issues any command
that changes modulation, the DCE stops the receive process; the DCE then dis-
cards any buffered data and processes the command.
Range: <mod> = 3
Refer to Table 5-2 on page 74.
+FRM=n none
Receive Data: The +FRM=<mod> command causes the modem to enter receive
mode using the modulation scheme specified in <mod>. <mod> may have the val-
ues shown in Table 5-2 on page 74.
When the selected carrier is detected, the modem sends a ‘CONNECT’ result to
the DTE. If a different signal is detected, the modem sends a “+FCERROR” (con-
nect error) result code to the DTE and returns to command mode.
After receiving the selected carrier, the modem transfers all received data patterns
to the DTE as consecutive start-stop framed bytes, including leading marking con-
ditions or flags. The modem marks the end of the data stream with <DLE><ETX>.
Upon loss of carrier, the modem returns to command state and sends a “NO CAR-
RIER” result code to the DTE.
Note: If the modem is on-hook, then the modem always returns an ‘ERROR’
message to the DTE after receiving the +FRM=<mod> command.
Range: <mod> = 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146
Refer to Table 5-2 on page 74.
+FRS=n none
Wait for Silence:The +FRS=<TIME> command causes the modem to send an
“OK” result code to the DTE when silence has been detected on the line for the
amount of time specified. The value <TIME> is in 10-ms intervals. The command
terminates when the required amount of silence has been detected on the line or
the DTE sends the modem another character that is discarded. In either event, the
DTE returns the “OK” result code.
Range: <TIME> = 1–255 (10 ms)
Table 5-3. Fax Mode Command Descriptions (Continued)
Note: An asterisk (*) denotes the factory-default setting.
Command Default Description