Lars Thrane Iridium Certus 200, Руководство пользователя и инструкция по установке

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LT-4200 User & Installation Manual Rev. 1.00 System Services
Lars Thrane A/S www.thrane.eu Page 52 of 128
Data
The LT-4200 Certus ® 200 system offers the following Iridium Certus ® data services
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Background IP data
This section describes the different ways the LT-4200 system can be set up to handle outgoing and
incoming data. The section describes the concepts and effects of the user actions regarding Data. For
further information on how to configure the system for data management,
Web server, Network on page
83 and IP Data on page 94 . The Data usage can be seen in the Phone Usage submenu in the Phone menu.
This is shown in System Submenus , Phone . Note that the LT-4210 does not present the Data usage with
100% accuracy as e.g., a bad connection could force the system to resend data packets, which is not
tracked in the Data usage list.
NOTE : The LT-4200 system has a built in DNS server which will cache user requests, efficiently
limiting requests over the satellite link. Having an input DNS server reduces the user data
stream, eventually reducing data cost.
Data activation
The LT-4200 system can be configured to either ‘Always on’ or ‘Manual start/stop’ , this can either be done
on the Web server as described in Web server, IP Data on page 94, or via the LT-4210 Control Unit as shown
in System Submenus , Settings.
Always on
When the system is set to Always on the data stream will as the name suggests always be open for activity.
The system will be able to send data if need be and if permitted by the outgoing firewall / port forwarding
rules.
Manual start/stop
When the system IP data stream is set to Manual start/stop the user has direct control of when data can be
sent through the system. The user is able to control this directly via a ‘ Start Data ’ or ‘ Stop Data ’ soft key on
the LT-4210 Control Unit, see Figure 48 and Figure 49 on page 53. The Manual start/stop setting gives the
operator of the system more direct control over when data is transmitted from the system and will
Figure 48: Manual data Start