US Robotics COURIER HST User'smanual page 60

S-REGISTER
QUERY (Sr?)
COURIER HST
Chu s sent 3669
Ch,1
rs
received 4249
Chars I
os t
0
Datd blocks
trans•itted
430
Ddtd blocks retransmitted 2
Line Revers a Is
OK
Figure 7.3-Sample Link Diagnostics Screen (ATl6)
This command allows you to view the contents of a par-
ticular S-Register. as in this example which requests
the contents of register S0 ("On what ring will the
modem answer')'· J:
ATSO? er
Most registers store values that can be user-defined. How-
ever. two registers that are not user-programmable can be
queried for the following diagnostic information.
S 7
7 The reason for a Link Disconnect when two modems try
to make an ARQ connection and fail. or when the remote
modem disconnects from an ARQ session. S 17 is used for
debugging purposes. If you're having an ARQ-compatibility
problem and call USRobotics' Technical Support Depart-
ment. you may be asked to check S 17.
S20
The reason for a NO CARRIER result code when the
modem is in either ARQ or Normal Mode. Reasons include
user aborts (pressing <any key> during dialing). loss of
carrier. and the automatic hangup that occurs when the
modem is set to &MS and calls a modem not operating
under error control.
7-3