Call Waiting
Calling Identity Delivery on Call Waiting (CIDCW) is a CLASS service that allows a customer,
while off-hook on an existing call, to receive information about a calling party on a waited call.
The transmission of the calling information takes place almost immediately after the customer
is alerted to the new call so he/she can use this information to decide whether to take the new
call.
Function:
The CAS signal flows from [T/R C121, C122 R121, R122 IC121 IC501 pins 54 (LINE
1)], [T/R C221, C222 R221, R222 IC221 IC501 pins 47 (LINE 2)] and the ACK (DTMF
signal) is returned to the telephone exchange. The telephone exchange that received the ACK
can send the data in the same manner as the caller ID. If the unit deems that a telephone
connected in parallel is in use, ACK is not returned even if CAS is received, and the information
for the second and subsequent callers is not displayed on the portable handset display.
13.7.1. Circuit Diagram
52
Содержание KX-TC1881B
Страница 3: ...2 LOCATION OF CONTROLS Base unit 3 ...
Страница 4: ... Handset 4 ...
Страница 6: ...6 ...
Страница 7: ...7 ...
Страница 8: ...4 CONNECTIONS 8 ...
Страница 11: ...5 OPERATIONS 5 1 Making Calls 5 1 1 With the Handset 11 ...
Страница 12: ...12 ...
Страница 13: ...13 ...
Страница 14: ...5 1 2 With the Base Unit DIgital Duplex Speakerphone 14 ...
Страница 15: ...15 ...
Страница 16: ...5 2 Answering Calls 16 ...
Страница 17: ...5 2 1 With the Handset 5 2 2 With the Base Unit 17 ...
Страница 18: ...6 DISASSEMBLY INSTRUCTIONS 18 ...
Страница 20: ...7 ASSEMBLY INSTRUCTIONS 7 1 Assembly the LCD to P C Board Handset 7 2 Replace the RF unit 20 ...
Страница 23: ...8 1 Check Power 8 2 Check Sp phone Voice Transmission 8 3 Check Sp phone Voice Reception 23 ...
Страница 24: ...8 4 Check Battery Charge 24 ...
Страница 31: ...8 7 Check Handset Voice Transmission 31 ...
Страница 33: ...NOTE When checking the RF UNIT Refet to Check the RF Unit 8 9 Check Call ID 33 ...
Страница 34: ...9 TEST MODE AND ADJUSTMENT 9 1 Test mode flow chart for Base Unit 34 ...
Страница 40: ...10 5 EXPLANATION OF BBIC DATA COMMUNICATION 10 5 1 Calling 40 ...
Страница 41: ...10 5 2 To Terminate Communication 10 5 3 Ringing 10 5 4 ID Change 41 ...
Страница 42: ...11 TERMINAL GUIDE OF IC S TRANSISTORS AND DIODES 11 1 Base Unit 11 2 Handset 42 ...
Страница 43: ...12 BLOCK DIAGRAM Base Unit 12 1 Power Supply 12 2 DSP Control 43 ...
Страница 58: ...14 BLOCK DIAGRAM Handset 15 CIRCUIT OPERATION Handset 58 ...
Страница 62: ...17 CPU DATA Handset 17 1 IC201 62 ...
Страница 63: ...18 EXPLANATION OF IC TERMINALS RF Unit 18 1 IC101 63 ...
Страница 64: ...64 ...
Страница 67: ...20 CABINET AND ELECTRICAL PARTS Base Unit 67 ...
Страница 68: ...21 CABINET AND ELECTRICAL PARTS Handset 68 ...
Страница 69: ...22 ACCESSORIES AND PACKING MATERIALS 69 ...
Страница 88: ...ANT GND ANT VC101 ...
Страница 89: ...TEST 10ch 1ch ...
Страница 91: ...TP_VCC2 14 3 15V LINE1 Tx 1 LINE1 Tx 2 6 0V 3 4 1V 4 5 5V 7 IC301 IC341 E B C E B C E B C B E C B E C ...
Страница 93: ...HANDSET COMPONENT VIEW ANT GND 100 MIC MIC TEST PULL UP 10 10 ANT VC101 SP SP ...
Страница 95: ...TX RX IC101 ...