DCT Antares SB, User Manual

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3.10. REMOTE HOST SOFTWARE
IP and Port origins so the AVL server can route any user-query
using that IP and Port as destinations.
5. An UDP destination’s configuration flag can be set so the unit
waits for an UDP confirmation message from the AVL server
every time an event report message is sent. This UDP wait-
for-ack option can be turned OFF but it is not advised as UDP
will not assure the delivery of reports by itself. If wait-for-ack
option is used, the AVL server has to implement this acknowl-
edging mechanism. Otherwise and because it does not receives
a confirmation message, the unit will keep on sending the same
reporting message for ever. For more information continue with
the next paragraph.
UDP confirmation message
When waiting for confirmation, the unit expects its ID on an UDP
datagram coming from the remote server every time it sends a report.
The unit sends the report: Example
>
REV2300000000000000000000000000000000090;ID=AB12
<
After receiving this, the AVL software must send back just the unit’s
ID:
AB12
Otherwise the unit will keep on sending the same message waiting
for a confirmation.
The timeout-retry mechanism for UDP with confirmation when no
confirmation is received is as follows: Four retries are sent at a 10
seconds interval, then 6 retires are sent at a 1 minute rate interval.
Then no more sends for about 6 more minutes. After that the mech-
anism restarts.
3.10.3 Working with SMS
Antares SB
TM
may use Telephone Number Destinations to send its
report or to give TAIP console access via SMS messages. The Destina-
tion may be configured to send user-defined event messages intended
to be read by a person with a cellular phone or similar. The Phone
Number
Destination may be configured so the unit does not send its
report as user-defined messages but as TAIP messages, the same way
as it is done with IP-Type or serial port destinations. This enables
an AVL server with the capacity of receiving/sending SMS to work
with the unit in the same manner as it is done via IP.
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