US Robotics 56K USB Modem User Manual page 95

Table 203. Register S109
Bit
S109[1:0] = 00
S109[1:0] = 01, 10, 11
S109[2] = 1
S109[3] = 1
S109[4] = 1
S109[5] = 1
S109[6] = 1
S109[7] = 1
#UD—Unimodem Diagnostics
This command is defined by Microsoft's unimodem diagnostics command specification. The modem
implements a subset of the parameters in that specification.
#UD is an action command. It does not take parameters. It should be the last command in the command
line. The modem logs aspects of its operation for each call and saves these results in volatile memory until
cleared by one of the following events. These results are not cleared by changing DTR, V.24 circuit 108.2,
&D0, &D1, or &D2.
• Power off (or D1 or D3 state entered).
• Hard reset (e.g., negate DTR with &D3 set, reset button).
• Soft reset = ATZ or AT&F.
• ATD or ATA command issued.
• Automatic answer (e.g., set register S0 > 0 and ring detected).
In response to this command, the modem reports one or more lines of information text. Information text
format is defined in ITU V.25ter. Each line is both preceded and terminated by a <CR><LF> pair. Note that,
as per V.25ter, CR and LF characters may be changed by writing new values to the contents of registers
S2 and S3 respectively.
DIAG <token key=value [[key=value [key=value]]. . .>
where:
DIAG = 5 characters, hexadecimal 44, 49, 41, 47, 20.
'<' = left angle bracket, hexadecimal 3C.
'=' = equal sign, hexadecimal 3D.
'>' = right angle bracket, hexadecimal 3E.
token = unique 32-bit hexadecimal string, i.e., 2A4D3263.
key = one- or two-digit hexadecimal number. See Table 204 on page 90.
value = any string.
Unless otherwise noted, all values are hexadecimal numbers. Any numeric values from tables in ITU V.58
are converted to hexadecimal. Multidigit values are reported MSD first. Leading zeros may be deleted.
The following table includes all items listed in Microsoft's specification for the #UD command. The items
that have an X in the Implemented column have been implemented in this release.
Please refer to Microsoft's unimodem diagnostics command specification for more information.
V34
V90
Fast connect Phase 1 enable
PCM upstream enable
V.92 enable
Fast connect Phase 2 enable
Reserved
Reserved
Description
Command Reference - 89
56K USB Modem
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