191 Glossary
Navigation DVD
Contains all available destination
addresses (town, road, intersection,
house number, special destinations)
and the digital map material for a coun-
try or a region for destination entry,
route calculation and destination
guidance at time of DVD production.
DVD maps do not cover all areas nor all
routes within an area.
North Up
The map is displayed facing north du-
ring route guidance.
POI (Point of Interest)
Points of Interest include service stati-
ons, rest areas, parking lots, hospitals,
sight-seeing points, etc.Provider
is the network operator who makes
available (provides) telephone services
PUK (Personal Unblocking Key)
must be entered if the wrong PIN was
entered three consecutive times.
Roaming
For this function, the telephone uses
the telephone network of a contract
partner. The ROAMING indicator in the
COMAND display indicates that a call is
being made using a contract partner.
Root directory
The uppermost directory on a storage
medium.
Scan rate (MP3)
Indicates the frequency at which volt-
age samples are taken during the con-
version of an analog signal into a digital
signal. The analog-to-digital converter
converts the samples into digital sig-
nals.Service source
This includes the systems telephone*
and navigation (voice output during
destination guidance).
SIM
(Subscriber Identity Module)
Card provided by the GSM telephone
service provider. Necessary for acces-
sing a mobile communication network.
SMS
(S
hort Message Service)
With this function you can receive and
read short text messages (if SMS ser-
vice is provided by your provider).
