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DEFINITY Communications System
CHAPTER 4: OPERATION AND CONFIGURATION
7400B Data Module
User’s Guide
Page 4-5
Command
Most commands are acted upon immediately and are acknowledged by
Acknowledgement the result code OK. This assumes that the result codes are configured in
the verbose form (command
V1
is in effect), and are enabled
(Q0
in
effect). Other options are the short or numeric form result code is set
(V0),
which would produce a
0
(zero) instead of the message
OK,
and no
visible acknowledgement
(Q1).
Refer to Appendix A, “AT Command
Set” for descriptions of the V and Q commands.
Several other result codes may appear on your terminal screen while the
data module is completing a call. The option selected by the X
command controls which of these result codes may appear on the screen
of your terminal (the X command is described in Appendix A). All
result codes that may be returned by the 7400B Data Module are shown
in Table 4-2 and in Appendix D, “Quick-Reference Summaries.”
Verbose Form
Numeric
Description
OK
0
Command accepted
CONNECT
1 Connection made at 300 bps
Note: If command X1 is in effect, CONNECT
means connection made at whatever
speed both ends of the call agreed upon.
RING
NO CARRIER
ERROR
CONNECT 1200
NO DIALTONE
BUSY
CONNECT 2400
CONNECT 4800
CONNECT 9600
CONNECT 19200
2
3
4
5
6
7
10
11
12
14
Ring signal detected
Carrier signal not detected or lost
Error in command line
Connection made at 1200 bps
No dial tone detected
Busy signal detected
Connection made at 2400 bps
Connection made at 4800 bps
Connection made at 9600 bps
Connection made at 19200 bps
TABLE 4-2 Result Codes