
Appendixes
77
MTPSR1-202ST
S-Registers
S-Registers are sections of memory in which values are stored that affect how the ProxyServer
operates. S-Registers are so-called because each has a name that begins with the letter
S
. Use the
S
command to assign a value to or to read the current value of an S-register. To assign a value to an
S-register, use the command
Sr=n
, in which
r
is the register number, and
n
is the value you want to
assign to the register, e.g.,
S7=45
.
To read an S-register value, use the command
Sr?
, in which
r
is
the register number, e.g.,
ATS7?
. Table D-2 provides a summary of the S Register functions.
Table D-2. S-Register Summary
S-Register Function
S0 Rings Until Answer
S1 Ring Count
S2 Escape Character
S3 Carriage Return Character
S4 Line Feed Character
S5 Backspace Character
S7 Wait for Connection (Abort Timer)
S10 DCD Drop Time
S25 DTR Drop Time
S26 Delay DTR Monitoring
S32 Escape Sequence Timeout
S50 Caller Line ID (“CLI”)
S52 Auto-Protocol Detection
S53 Maximum Frame Size (X.75)
S54 Force 56 Kbps B-Channel Data Rate
S55 Set Information Transfer Capability for POTS port calls
S-Register:
S0
Function: Number of Rings Until Answer
Unit: 1 ring
Range: 0–255
Default: 1
Description:
S0
sets the number of rings the ProxyServer waits for before it answers and begins
its connect sequence.
S0=0
turns off the ability to automatically answer a call.
S0=1
causes the Prox-
yServer to automatically answer after 1 ring. Note that if the
S0
value is set too high, the calling de-
vice may time out before the ProxyServer answers the call. For autoanswer,
S0
must have a
non-zero value, DTR must be high (
&D
command), and the ProxyServer must be offline.
S-Register:
S1
Function: Ring Count
Unit: 1 ring
Range: 0–255
Default: 0
Description:
S1
counts the number of rings that have occurred, up to a maximum of 255. It is a
read-only register and is seldom, if ever, used in typical operation. If you set
S1
to a value other than
its default value of zero, or if the value is increasing with rings, this new value remains stored in
S1
for eight seconds after the last ring is counted, after which time the value reverts to zero.
S-Register:
S2
Function: Escape Character
Unit: Decimal ASCII code
Range: 0–127
Default: 43 (+)
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