Wireless LANs – attributes

• always on for continuous monitoring and control
• no connect time fees (low cost)
• private network
• up to 20 mile range
• unlimited nodes
• local access
• extensible range through use of multiple nodes
• higher frequency data around the clock

Satellite LANs - attributes

• worldwide connectivity
• mobile or fixed installations
• no roaming charges
• predominately a gateway hub
• extensible range through use of multiple hubs
• less frequent access to remote device
• third party connection fees apply
• high battery, power requirement
• 24/7/365 availability
• user defined frequency of access to connection (a few seconds to several extended periods a day)
• ideal for hilly, mountainous terrain
• provides best visibility
• easiest to set up (just turn it on)

Cell Phone/PDA Linked LAN - attributes

• for locally mobile assets – within roaming areas
• lower cost than satellite
• extensible range – can be network gateway for an integrated wireless network
• efficient - not every node needs a cellular modem
• costs controllable, predictable

Wired LAN – attributes

• fixed network management
• higher data rate
• ideal solution for noisy environments
• suited to RF sensitive environments
• inexpensive
• always on for continuous monitoring and control