Telenetics 56 - Manual (Page 149)

AT Commands
Page 141
If the modem detects a receive buffer overflow condition, it stops receiving from the
remote until there is room in the receive buffer. The modem informs the DTE of the
buffer overflow after it sends to the DTE the last character that was stored in the buffer
before the overflow occurred.
If the modem receives any character from the DTE after the +FRM command (except
flow control characters if software flow control is in effect), or if the modem detects a
high-to-low transition of the DTR signal while &D1 is in effect, it sends <DLE><ETX>
to the DTE, generates the OK result code, and returns to command mode. The receive
buffer is cleared and all data received from the remote is discarded. If loss of DTR is
detected while &D2 is in effect, the modem goes on-hook, sends <DLE><ETX>
followed by OK result code to the DTE, and returns to command mode. If the modem
detects a DTR drop while &D3 is in effect, the modem performs a warm reset.
Commands and Parameters
Mode Entry Commands
+FCLASS=1 - Select Facsimile Class 1 Mode
+FCLASS=1 selects the Fax Class 1 Mode. The Fax Class 1 Mode commands and
responses described in this section are applicable when command +FCLASS=1 as shown
in Table A-18.
+FCLASS=1.0 - Select Facsimile Class 1.0 Mode
+FCLASS=1.0 selects the Fax Class 1.0. The Fax Class 1.0 Mode commands and
responses described in this section are applicable when command +FCLASS=1.0 as
shown in Table A-18.