User's Manual

SC14CVMDECT Cordless Voice Module
© 2011 SiTel Semiconductor B.V. Company Confidential 20 August 19, 2011 v1.2.1
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4.3.9 PP Audio equalization
To enable adjustments of the frequency response the
PP contains four programmable filters: 2 in RX
direction and 2 in TX direction (see Figure 11).
By default these filters are loaded with bypass
coefficients, but the API contains commands to load
new coefficient for all filters.
Equalizer filters are part of the audio routes for all
audio modes and are placed as shown in Figure 11.
For a detailed description of the filter functionality
please refer to API documentation; see document
reference [1].
4.4 CALL HANDLING
4.4.1 FP to PP Call
When the FP initializes a call to a PP, a radio
connection is set up to all the PP applications to make
it possible for the PP Application Software to indicate
that there is an incoming call.
It is possible to configure the ringing indication using
broadcast to make all 6 PPs ringing. When receiving
the call, the PP signals the call to the MMI Software.
4.4.2 PP to FP Call
When the MMI Software signals the PP to establish a
call, the PP opens the radio connection to the FP.
4.4.3 Intercom and Conference
Not supported.
4.4.4 Call Transfer
Call transfers are not supported.
4.4.5 Page Call
The Page call is a FP functionality used to locate the
registered PPs. FP paging does not establish a normal
audio connection and is terminated when answered by
the PP. In FP Speakerphone mode a voice call can be
established when the paging is answered.
4.4.6 Connection scenarios
The following voice connections
are supported.
• PP to FP
• FP to PP.
4.5 TONE/MELODY HANDLING
The tone component handles the generation of various
tones in the device. Both tones/melodies in a FP and
PP configuration are supported. Main features of the
tone component are:
The main features of the tone component are:
• Ringer tones and melodies (7 tone polyphonic)
• Alert tones (key sound, error tones, confirmation
tones, etc.)
• Inband tones (dial tone, net-congestion tone, busy
tone, etc.)
• Single tone generation
4.6 DATE AND REAL-TIME CLOCK
The FP base has a real-time clock feature, which
(when activated) broadcasts the date and clock to the
PPs. Activation of the date and real-time clock is done
by setting the date and clock via the PP.
The clock is with hours, minutes and date. The clock
supports the leap year. Daylight saving is not
supported and must be handled by the MMI
application.
The PP clock is synchronized with the FP every time a
broadcast is received. If the PP goes out-of-lock, the
PP itself calculates the clock until the PP is again
within the range of the FP. The updated clock can then
Figure 11 PP Audio Routing
EQ
EQ
nc100Hz
EC
Vol.
ctrl
tonegen
Rx_in
Tx_out
Sidetone