Specifications
i50 Manual (5.10) 
Page 28 
© 2015 Datalink Systems, Inc. 
www.datalinksystemsinc.com 
Cell Buffer:  Enable position buffering when using a cellular modem. See 
note on RF Buffer setting. 
Iridium Buffer:  Enable position buffering when using Iridium. See note on RF 
Buffer setting. 
RF Buffer:  Enable position buffering when using an RF modem. Note: 
since firmware version 4.96, the network buffer settings provide 
a “Polling” mode. When selected, the i50 will only send data 
when checking for network coverage, or when data is received 
from the server. 
Self-Geofence 
Peg Lat/Lon:  Latitude and longitude values used for self-geofence. 
COM Ports 
Port A Route:  Controls whether Port A is routed to the Prog connector, COM1 
connector or Wi-Fi module during normal operation. 
Port A-F:  Defines what devices are connected to each of the i50’s serial 
ports. Port A route is controlled by the setting above. Port B 
connects to COM2. Port C connects to internal GPRS modem. 
Port D connects to internal Iridium modem. Port F connects to 
the COM3 connector. See section 8.0 for a list of available 
options. 
COM1/2 Flow Control:  Turn flow control on or off for the COM1 and COM2 connectors. 
Firmware version 4.16 and earlier also controlled the Wi-Fi flow 
control using the COM1 setting. Later versions force Wi-Fi flow 
control on. 
GPS 
GPS COM Speed:  GPS module COM speed. 
Update clock using GPS:  Automatically set real-time clock base on GPS signals. 
GPS satellites:  Require a certain number of GPS satellites to mark a position 
as valid. Note: this should normally be set to zero, as the GPS 
module calculates position validity based on received signal 
strength and satellite positions. 
Internal GPS:  Enable use of internal GPS module. If disabled, an external 
GPS module can be connected via a serial connection. 
Cellular 
Cell COM Speed:  Cellular modem COM speed. 
Cell Modem Type:  Type of cellular modem. 
Cell Server Domain Name:  Optional domain name for server. When enabled, the i50 will 
perform DNS lookups to determine server IP address. 
Cell Server IP:  DataGate server address when sending data over cellular 
network. Also used to allow data through the Wi-Fi firewall. 
Backup Cell Server IP:  Backup address, used when remotely switching servers. 
Cell Port:  UDP port for sending data over cellular network. 
Cell Echo:  Enable PPP echo requests. This is normally disabled. 










