Calling Line Identification (Caller Id)/Call Waiting Caller - Panasonic KX-PRW130W Service Manual

Parallel connection detection when off hook:
When off hook, the voltage is monitored at pin (F2) of IC501; the presence/absence of a parallel connection is determined by
detecting the voltage changes.
If the Auto disconnect function is ON and statuses are Hold, receiving ICM, OGM transmitting, BBIC disconnects the line after
detecting parallel connection is off hook.
4.4.9. Calling Line Identification (Caller ID)/Call Waiting Caller ID
Function:
Caller ID
The caller ID is a chargeable ID which the user of a telephone circuit obtains by entering a contract with the telephone company
to utilize a caller ID service. For this reason, the operation of this circuit assumes that a caller ID service contract has been
entered for the circuit being used. The data for the caller ID from the telephone exchange is sent during the interval between the
first and second rings of the bell signal. The data from the telephone exchange is a modem signal which is modulated in an FSK
(Frequency Shift Keying) * format. Data
the message format which can be received: i.e. the single message format and plural message format. The plural message
format allows to transmit the name and data code information in addition to the time and telephone number data.
*: Also the telephone exchange service provides other formats.
Single message format
STD Ring / 20 Hz
Tip-Ring
DATA in
A
DATA out
B
Plural message format
1 is a 1200 Hz sine wave, and data
" "
1st Ring
2 sec
1200 Hz
=DATA "1"
1 bit=833 µs
month day
04 15
1st Ring
718 ms
0.5 s
2 sec
DATA
DATA CODE NAME
201 John Smith
"
Silent interval 4 sec
0.5 s 575 ms
min 0.5 s
DATA
0.1 Vrms
2200 Hz
=DATA "0 "
hour minute
16 35
2nd Ring
month day
hour
04 16 16
15
0 is a 2200 Hz sine wave. There are two types of
"
2nd Ring
2 sec
number
2013487000
minute number
35 2013487000
KX-PRW130W/KX-PRWA13W
70 Vrms