7.6 Additional Modem Status Codes
To provide the user with more information on the status of the modem, the
*S
response (see Chapter 9) has been expanded. These codes are used by
the Network 16 Network Management System, or the local user, to access
the detailed operating characteristics of the modem.
The results are output in hexadecimal format only, and may consist of
single- or multiple-byte responses.
Enter commands in the following format:
*Snn
where
nn
is required result in the range 1 to
20.
Note that
*S13
to
*S15
are not supported by the modem: the code
000
will
be returned.
*S1
DTE Input Pins
Result displays status of V.24 DTE pins.
Bit
Set
Definition
0
0
Pin 20 low, Data Terminal Ready OFF
1
Pin 20 high, Data Terminal Ready ON
1
0
Pin 4 low, Request To Send OFF
1
Pin 4 high, Request To Send ON
2
0
Not used
3
0
Pin 23 high, high modem speed requested
1
Pin 23 low, low speed (fallback) requested
4
0
Pin 21 low, No V.54 RDL requested
1
Pin 21 high, V.54 RDL requested
5
0
Pin 18 low, No V.54 AL requested
1
Pin 18 low, V.54 AL requested
6
0
Not used
7
0
Not used
*S2
DCE Output Pins
Result displays status of V.24 DCE pins.
Bit
Set
Definition
0
0
Pin 6 low, Data Set Ready OFF
1
Pin 6 high, Data Set Ready ON
X450-310851 Issue 2
7-11
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Содержание syncro 1496
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