Spectra Precision ProMark 800 Reference Manual User Manual
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Miscellaneous
1. You first need to know which IP address should be entered
in your surveying system to establish a Direct IP 
connection to the RTDS software.
Unless you already have a static IP address, or if you don’t 
know whether you have one or not, call your Internet 
Service Provider (ISP) to obtain a static IP address for the 
computer on which you will install the RTDS software.
With most ISPs, you’ll have to pay a fee to get a static IP 
address option for your computer.
2. You then have to choose one or two port numbers.
depending on whether you will be using the GPRS-to-
GPRS or Serial-to-GPRS mode.
In theory, port numbers can range from 1 to 65536 but 
No. 1 to No. 1024 are considered as reserved numbers.
There are also conventions recommending the use of 
specific port numbers for specific applications. For 
example, all GNSS-related data exchanged on the Internet 
are usually routed through port 2101. This port number 
can then be chosen (plus others if necessary, for example, 
“2102”, “2103”, etc.), but remember that any numbers 
greater than 1024 may be chosen, provided they are not 
used on your computer for some other application.
3. Take the necessary steps to allow data to flow freely
between RTDS and your surveying system through the 
chosen port number(s). This means you have to declare 
the use of this port (or these ports) in the ADSL modem 
firewall (or gateway), and possibly in the computer 
firewall. You may need some advice from your computer 
specialist to complete this operation.
If your computer is part of a local network (LAN), ask the 
network administrator to perform the required network 
address translations (NAT) and declare the port numbers 
used so the data arriving at the public IP address can be 
routed to your computer through its local IP address and 
port. 
4. Install the RTDS software on your computer. This is an
easy step during which you just have to run the “Ashtech 
Real Time Data Server x.x-x setup.exe” file provided, then 
follow the instructions to complete the installation phase.
5. Determine whether you need to use the GPRS-to-GPRS or
Serial-to-GPRS mode (see above), depending on your 
application. Choose the base location and computer 
location accordingly.
6. On the computer, launch RTDS and make the appropriate
settings (plus make the serial connection if the Serial-to-
