Manual FeaturePhone 175 SD © Vidicode 2011
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3
Using the FeaturePhone 175 SD
The FeaturePhone 175 SD is a special telephone aimed at the automatic
recording of telephone conversations. For this purpose the
FeaturePhone 175 SD is equipped with a SD card. The FeaturePhone 175
SD can be connected to any regular analogy telephone line and is used
as a regular telephone. It has the ability to automatically record
telephone calls as they are being made. Telephone calls are recorded on
the flash disk during the call. After the calls have ended the recordings
can be either automatically or manually, copied to SD.
3.1
Compression
The digital format of the recordings is determined by the use of speech
compression. The Call Recorder compresses recordings default according
to the GSM format. This type of compression has a good balance
between audio quality and recording size and is compatible for most
Windows versions. Compressed recordings take up 1/5th of the size of
uncompressed recordings. A high compression rate generally has a
poorer quality.
The FeaturePhone 175 SD supports 2 different formats. The table below
shows the relation between recording quality and storage capacity.
Recording
quality
Flash disk
SD 2GB
Bytes/Sec.
G.711 A-law
2 hrs
69 hrs
8000
GSM
10hrs
340 hrs
1625
By default the FeaturePhone 175 SD is set to record in GSM compression
format.
3.2
Search and playback
The FeaturePhone 175 SD has its own menu driven search function to
find and play specific recordings. Recordings can be searched for
according to Date and Code, by default the Called number or Caller ID
will be stored as Code. The FeaturePhone 175 SD has an internal
speaker for playback of recordings.
3.3
Security
All recordings can be encrypted. The FeaturePhone 175 SD uses the
CryptoCard option for this feature. Playback of encrypted recordings is
impossible without the CryptoCard. Playback of encrypted recordings on