Commanding The Modem - General DataComm SpectraComm V.34 Installation & Operation Manual

V.25 bis Command Set Operation

Commanding the Modem

When entering commands, terminate each one with a line feed <LF> control character. The modem
sends a response back to the terminal for each command.
commands. Table 5-3
responses to indicate each entered command's result, but responses are ignored by some
communications software that enables a computer to emulate a terminal. Descriptions of each V.25
bis 108.2 mode command appear on the following pages. Operating procedures for establishing
and terminating data communications are explained following the command descriptions.
Explanation of Valid Responses
Table 5-2
Response
CFI AB Call failure indication: no carrier, call was aborted (time-out occurred or character was entered at
keyboard).
CFI BF Call failure indication: telephone number black list (which uses the 10 memory cells) is full. You
cannot place any more calls until:
a) after a timeout.
b) the memory cell is modified.
c) the modem is reset.
CFI DT Call failure indication: dial tone was not detected (dial tone time-out occurred).
CFI DF Call failure indication: telephone number delayed list (which uses the 10 memory cells) is full.
Numbers which are redialed continuously without making a connection are added to the delayed list.
They are removed from the list:
a) after a timeout.
b) when a connection is made.
c) when the memory cell is modified; or d) when the modem is reset.
CFI ET Call failure indication: remote modem is busy.
CFI UT Call failure indication: unobtainable number tone was detected.
CNX 300 bps connection is established.
CNX 1200 1200 bps connection is established.
CNX 2400 2400 bps connection is established.
CNX 4800 4800 bps connection is established.
CNX 7200 7200 bps connection is established.
CNX 9600 9600 bps connection is established.
CNX 12000 12,000 bps connection is established.
CNX 14400 14,400 bps connection is established.
CNX 16800 16,800 bps connection is established.
CNX 19200 19,200 bps connection is established.
CNX 21600 21,600 bps connection is established.
CNX 24000 24,000 bps connection is established.
CNX 26400 26,400 bps connection is established.
CNX 28800 28,800 bps connection is established.
INC Incoming call was detected. This response is generated only once for each incoming call.
INV Refer to Table 5-3 for responses to commands that the modem does not recognize.
RNGBK Ringback was detected by the originating modem.
VAL Valid command was invoked.
060R122-000
Issue 15
explains responses to invalid commands. Most terminals display the
Description
SpectraComm Dual V.34 Modem
Installation and Operation
Commanding the Modem
Table 5-2 explains responses to valid
5-3