223 Glossary
PUK (Personal Unblocking Key)
must be entered if the wrong PIN was
entered three consecutive times.
Roaming
For this function, the mobile phone
uses the network of a contract partner.
There are home type and non-home
type systems. The Roaming indicator in
the COMAND display indicates that a
call is being made using a non-home
type system.
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*,
navigation (voice output during desti-
nation guidance) and ->Voice control
system
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, read
and delete short text messages (if SMS
service is provided by your carrier)
Soft keys
Keys that activate different functions.
Function of key depends on the selec-
ted operating mode.
Surround
Playback method resulting in an impro-
ved spatial listening experience com-
pared to conventional stereo playback. Tele Aid
(Tele
matic Alarm Identification on De-
mand)
The Tele Aid system consists of three
types of response: automatic and ma-
nual emergency, roadside assistance,
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call. Refer also to the vehicle op-
erating instructions.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is char-
ged, properly connected, not damaged,
and cellular and GPS coverage is avai-
lable.
UDF
(U
niversal Disc Format)
Standard for recording data on e.g.
DVDs.
