Novatel Merlin XU870 User Manual
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Kbps
Kilobits (1024 bits) per second rate of data 
flow.
LAN
Local Area Network. A data network confined 
to limited area with moderate to high data 
rates.
Mbps
Megabits (1,048,576 bits) per second rate of 
data flow.
MB
Megabyte. A unit of data equal to 
approximately 1 million bytes.
NDIS
Network Driver Interface Specification. A 
Windows device driver interface that enables 
support for multiple network protocols.
PPP
Point to Point Protocol. A method of connecting
a computer to the Internet.
PIN Code
Personal Identity Number. A code that is linked
to your SIM card for security. This four digit 
code gives you access to the SIM card and 
allows you to access your operator's network.
PUK Code
Pin Unlock Code. PUK is the code required to 
unlock a GSM SIM card that has disabled itself
after an incorrect PIN code was entered three 
times in a row. If an incorrect PUK code is 
entered 5 10 times, the SIM card will 
permanently block (disable) itself.