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DTMF
DTMF (Dual Tone Multiple Frequency) is a
method of telephone signalling, which can be
used, for example, to transmit tones whenever
the keypad is operated during a call, e. g. to
operate a voice mailbox or telephone menu
system.
In-band ringing
Some mobile phones are able to transfer their
ringtone to the vehicle via Bluetooth®. When a
call comes in, PCM then rings with the tone set
on the phone rather than with its own tone.
In this case, the ringtone settings in PCM are
not active. The ringtone can only be set via the
mobile phone. This function is not supported
by CDR.
Mobile phone preparation
Mobile phone preparation (in conjunction with
CDR or PCM) is a typical Bluetooth® hands-free
system based on the Bluetooth® Handsfree
Profile (HFP). The Bluetooth® mobile phone
preparation supports the following functions in
principle:
pairing of a mobile phone with search
initiated from the car or phone
automatic connection of a paired device
at system start-up
basic phone functions
(making, receiving and ending calls)
hands-free capability via the in-car
audio system
status displays such as network name
and signal quality
transfer of phone book entries and call lists
from the mobile phone
sending of DTMF tones
Since the range of supported functions
varies greatly between different mobile phones,
please refer to the detailed information relevant
to your vehicle equipment and mobile phone,
starting on page 47.
Online search
The online search feature in PCM from
November 2012 onwards uses the Google
Places® interface. The user is able to look for
points of interest in various search localities
(near car, near destination or free location input)
by entering a search term. The query is sent by
the Aha Radio app to a Google® server and this
returns a response. The results are presented
in a list on PCM.
Online services
Online services is how we refer to those
functions that download their information to
the car through a mobile Internet connection.
Since November 2012, PCM working in
conjunction with the Aha Radio app installed
on a smartphone has been able to access online
services that include web radio, online weather
updates and online searching. The data are
transferred to PCM via cable (iOS® device) or
Bluetooth® (Android® device) where they can
be displayed or output through the in-car
audio system.
Glossary
