5-4
Stinger® MS+ Getting Started Guide
Configuring the Control Module and System Timing
Administrative connections
Figure 5-3. Backup administrative connection with a modem to the Stinger MS+ unit
The modem you use to connect to the Stinger unit must be configured as follows:
■
Dumb mode. Dumb mode causes the modem to ignore data on the receive data
(RD) lead.
■
Ignore on-to-off transitions of the data-terminal ready (DTR) lead.
■
Auto answer enabled.
■
8 bits, 1 stop bit, and no parity.
Configure the following AT commands on the modem:
Modem country codes
You can configure the internal modem in a revision 2 control module to support the
national regulations of telephone companies in specific countries. If the modem
supports the country that you have specified, the system programs the modem with
the settings necessary for that country. The
country-code
parameter in the
modem
profile, shown here with its default value, is used for this setting.
[in MODEM/{ shelf-1 first-control-module 3 }]
physical-address* = { shelf-1 first-control-module 3 }
country-code = unitedstates
The
cmmodemShowCurrentCountry
debug command displays the country code
that is currently configured in the modem.
at&d0 Ignore
DTR
state.
ats0=1
Answer automatically after one ring.
ate0
No echo (required).
at&c0
Assert the data carrier detect (DCD) signal.
atq1
Result codes are not sent.
at&w0
Store in nonvolatile RAM (NVRAM) as profile 0 (zero).
at&y0
Use stored configuration from profile 0 (zero) on startup.
STINGER MS
BITS
MINOR
MAJO
R
NC
COM
NO
NC
COM
NO
RTN
-48VD
C
-48VDC
RTN
TN
-48VD
C
-48VDC
Diagnostic
port
To modem
Null modem
cable
