DCT e-track, Руководство пользователя

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2.10. OVER THE AIR [ADVANCED]
by means of its TAIP console which is a command-response mech-
anism that allows to change configurations and consult the state of
the unit. This console can be accessed over the air via IP and/or via
SMS messages and locally over the USB port.
In order for the TAIP console to be used remotely a Destination (or
several of them) has to be defined so the unit knows who is authorized
to interact with it.
Destinations are discussed on the Configuration
chapter and are configured with the
XADP
TAIP message, refer to
those sections for information on how to create and configure Desti-
nations . If you are using e-track Configuration Assistant software the
Destinations’ and their access rights are configured on the Address
Book page.
TAIP queries that generate multiple answers are not supported
over the air. For example sending >
QED
< without specifying an
event’s ID is only supported over the USB port.
Note:
.
2.10.1 Via IP hosts (GPRS)
To interact with the unit via IP hosts, the corresponding IP ad-
dress/name
7
and TCP/UDP port has to be created on any of the
unit’s Destinations’ space or in e-track Configuration Assistant’ ’ Ad-
dress Book page. When using TCP the unit functions as a TCP
client which always initiates the connection to the remote IP host
which acts as a TCP server. Once the connection is established the
TCP server can send any TAIP command/query to the unit using
the established connection.
When using UDP nobody initiates a connection. In this case the
units responds TAIP queries sent as UDP datagrams from a remote
IP address/name defined on an UDP-IP-type
Destination . There are
two mechanisms for interrogating the unit via UDP datagrams: Us-
ing the unit’s UDP server port and/or using the unit’s UDP-origin
port. The latter is by default dynamically generated and changed by
the unit as datagrams are sent; but using the TAIP command
XAUO
this value can be fixed.
•
UDP Server Port: Set a value from 1 to 65535 with the com-
mand
XAUP
so the unit always listens to UDP datagrams con-
taining TAIP commands on a fixed, always-available port. No-
tice that the UDP server port solution only works when both
7
e-track
TM
’s supports IP numbers as well as domain names.
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