Westermo MR Series - Manual (Page 421)

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Web Interface and Command Line Reference Guide www.westermo.com
“S” Registers 18
In addition to the AT commands there are a number of Special (“S”) registers. These registers con-
tain numeric values that may represent time intervals, ASCII characters or operational flags.
To display the contents of a particular “S” register, the ATS command is used in the form ATSn?
where n is the number of the register whose contents are to be shown.
To store a new value into a register, use the S command in the form ATSN=X where N is the
number of the register to be changed and X is the new value. For example, ATS31=4 would store
the value 4 in S31.
The unit maintains one set of registers for each ASY port. By default, the S command operates
ONLY on the S register set for the active port. To select an alternative default port, use the AT\
PORT command first.
Each register can only be set to a limited range of values as shown in the table below:
Reg. Description Units Default Range
S0 V.120 Answer enable Rings 0 0-255
S1 Ring count Rings n/a n/a
S2 Escape character ASCII 43 0-255
S9 DCD on delay ms x 20 0 0-255
S10 Pulse time for DCD Low ms x 10 0 0-255
S12 Escape delay ms 50 0-255
S15 Data forwarding timer ms 2 0-255
S23 Parity N/A 0 0-2,5,6
S31 ASY interface speed refer to full
description n/a 0-11
S33 DTR dialling N/A 0 0,1
S45 DTR loss de-bounce 0.05 seconds (0.25s) 1-255
S0 V.120 Answer Enabled 18.1
Units: Rings
Default: 0
Range: 0-255
S0 is used only in V.120 mode to enable or disable automatic answering of incoming ISDN calls.
Auto answering is disabled when S0 is set to the default value of 0. Setting S0 to a non-zero value
enables auto-answering.
The actual value stored determines the number of “rings” that the unit will wait before answering.
For example, the command ATS0=2 enables auto-answering after two incoming rings have been
detected.
With each ring the RING result code is issued and the value stored in S1 is incremented. When the
value in S1 equals the value in S0 the call is answered.
S1 Ring count 18.2
Units: Rings
Default: n/a
Range: n/a
When ADAPT detects an incoming ISDN call on an ASY port, it will print “RING” to the ASY port
at 2 second intervals. It also increments the S1 register, counting how many times “RING” is printed.