Novatel Merlin XU870 - Manual (Page 42)

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Proxy A firewall mechanism that replaces the
IP address of a host on the internal (protected)
network with its own IP address for all traffic
passing through it.
SMS Short Messaging Service. Short text messages of
no more than 160 characters sent and received
by broadband devices.
TCP/IP Transmission Control Protocol/Internet Protocol.
A protocol for communicating over the Internet.
VPN Virtual Private Network. A way to communicate
through a dedicated server securely to a
corporate network over the Internet.
WAN Wide Area Network. A network which uses
common carrier provided lines. Contrasts with
LAN.
WCDMA Wideband Code Division Multiple Access. Based
on the GSM technology evolution roadmap,
WCDMA supports upload and download speeds
up to 384kbps. WCDMA is also referred to as
UMTS.
WWAN Wireless Wide Area Network. A communications
technology that utilizes digital mobile phone
systems to access data from any location in the
range of a cell tower that is connected to a
data enabled network.