Calling Line Identification (Caller Id)/Call Waiting Caller Id - Panasonic KX-TGE240B Service Manual

4.6.9.

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
month
04
Plural message format
DATA CODE NAME
201
1 is a 1200 Hz sine wave, and data
" "
1st Ring
2 sec
1200 Hz
=DATA "1"
1 bit=833 µs
day
15
1st Ring
718 ms
0.5 s
2 sec
DATA
John Smith
KX-TGE240/242/243/244/245/260/262/263/264/270/272/273/274/275/TG454/TG465/TGEA20/TGA20
Silent interval 4 sec
0.5 s 575 ms
min 0.5 s
DATA
0.1 Vrms
2200 Hz
=DATA "0 "
hour minute
16
2nd Ring
day
month
hour
04 16 16
19
0 is a 2200 Hz sine wave. There are two types of
" "
2nd Ring
2 sec
number
35 2013487000
minute
number
35 2013487000
70 Vrms