Lava Computer HQ-ST Link - Manual (Page 12)

Rev. A00 HQ-ST System Manual Page 10 of 32
Important: The headquarters site requires static IP addresses — the HQ LAN IP address must be static, AND the WAN
address of the HQ LAN site device must be static.
The WAN/Internet IP address must be a known STATIC IP address (or an assigned DNS name). Use Internet Explorer to
access www.whatismyip.com to verify the address. Also verify that this is so by accessing the setup parameters of the
gateway/router that is to be used to provide the access to the Internet for the LAN.
Note: The HQ site may (as an option) have a DNS name, which can be used by Internet users instead of the STATIC IP, to
connect to the HQ site.
Important: Port forward the two port numbers associated with each HQ Plus on the LAN.
1. Assign STATIC Network IP parameters to each HQ Plus
Use the LAVA Ether Link Manager utility (See “LAVA Ether Link Manager Utility” on page 5.) to configure the LAN
NETWORK settings of the HQ Plus, then (on knowing the IP address of the HQ Plus) use the web page (See “Web
Page Interface on HQ Plus and ST Plus” on page 32.) to configure any parameters on the HQ Plus.
2. Confirm that two TCP socket ports are assigned to each HQ Plus
The default ports are 4098 and 4099, (that is, a base port and a base+1 port). Use the web page interface to the HQ
Plus to configure the base port number of the HQ Plus. The second port number is computed automatically based
on this first value.
3. Forward the HQ Plus IP address base and base+1 ports
Port Forward the HQ Plus IP address base and base+1 ports, through the gateway to allow access to the HQ Plus's
IP address:ports from the Internet. Use the information provided on www.portforward.com to accomplish the
"port forwarding" procedure on your particular installed gateway/router.
4. Configure the serial I/O parameters
Configure the serial port of the HQ Plus to match the requirements of the equipment that is to be connected to
the serial port of the HQ Plus.
SPECIAL NOTE: Some application software programs that communicate with a serial modem expect that the
"modem" is installed as a TAPI device under Windows. In this case follow the procedure to install the HQ Plus as a
Generic 56K Modem on a selected Com:n port, set the baud rate as required for the equipment, and set the option to
operate WITHOUT waiting for Dial Tone. Once the device is "installed", re-boot the PC then do a test by querying the
modem to verify the correctness of the "modem installation". See “Installing the HQ Plus on the PC as a (TAPI) Modem”
on page 31.
Some application software programs only expect that an external modem is connected to a serial port on the PC. In
this case connect the HQ Plus to the appropriate Com:n serial port. The application program will send AT commands
through the serial (com:n) port to the HQ Plus.
5. Record important settings
Information to be noted: Keep this information on hand for reference when setting up the ST Plus devices, and for
test/troubleshooting purposes.
Internet (WAN) IP address of the HQ site. This is the "call home" IP address that will be entered into all ST Plus devices
that are to communicate with this HQ Plus on IP(WAN):port/s.
Base and Base+1 Ports assigned. The Base Port number will be entered into all ST Plus devices, as part of the unique
"call home" IP address information, of the HQ Plus. Note several HQ Plus devices can be located at the site, but each HQ
Plus will be uniquely identified by its assigned Base Port number.
6. Test the link.
See “Test that the HQ Site is Properly Set Up and Working: HQ Plus Installed” on page 26.
See “Test the End-to-End HQ-ST Link Communications: HQ and ST Installed” on page 27.