Sierra Wireless MP 700 Series, Справочник по командам

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MP 700 Series GPS AT Command Reference
38 2130309
!MPCWSETUP
(continued) Set Connection Watchdog (continued)
<PING IP>
IP address that the modem pings when the
<mode>
parameter
is set to ping. The format is X.X.X.X where X is a value
between 0 and 255. (The default is 0.0.0.0.)
<mode>
Action that the modem takes when the <rxtime> interval is
reached; 0 = DNS query, 1 = ping.
As an example, the following AT command would configure the modem to verify
a DNS address when a connection is established:
at!mpcwsetup=10,30,7367,”www.sierrawireless.com”,0,0.0.0.0,0
In the above example:
•
Once a connection is established, the Connection Watchdog goes into
“validating mode”, and attempts to validate the DNS server. (<mode> = 0)
•
DNS validation is performed by looking up the domain name
www.sierrawireless.com (<dnsname> = “www.sierrawireless.com”)
•
If the DNS lookup fails, the modem remains in “validating mode”, looking
up the domain name every 30 minutes (<dnstime> = 30)
•
If the DNS lookup is successful, the Connection Watchdog goes into
“monitoring mode”. The modem checks the Rx byte count every 10
minutes (<rxtime> = 10). If the Rx byte count changes during the 10 minute
interval, the connection is deemed to be valid. If the Rx byte count does not
change, the modem generates traffic by performing a DNS look-up. If the
Rx byte count changes as a result of the DNS look-up, the connection is
deemed to be valid. Otherwise the connection is terminated.
•
The Connection Watchdog does NOT reset the modem after terminating
an invalid connection in this example (<AC Reset Flag> = 0). If the <AC
Reset Flag> were set to 1, the radio component would be reset after the
modem terminated any invalid connection.
As another example, the following AT command would configure the modem to
ping a specified IP address when a connection is established:
at!mpcwsetup=10,30,7367,”www.sierrawireless.com”,0,100.101.102.10
3,1
In the above example:
•
Once a connection is established, the Connection Watchdog goes into
“validating mode”, and attempts to ping the server. (<mode> = 1)
•
DNS validation is performed by pinging the address 100.101.102.103
(<PING IP> = 100.101.102.103)
•
If the ping fails, the modem remains in “validating mode”, looking up the
domain name every 30 minutes (<dnstime> = 30)
Continued on next page.
Table 3-9: Command Reference Table (ASCII Alphabetic)
Command Description