229
Basic Troubleshooting and Repair
Table 43: A-B Bit Signaling Example (T1/CO)
State
Transmit
Receive
A
B
A
B
Outgoing call - Basic Operation
Idle state
0
1
1
*
PBX grounds ring (wait for dial tone)
0
0
1
*
CO ground tip (dial tone applied)
0
0
0
*
PBX closes loop and removes ring ground
1
1
0
*
Dial pulsing
DP
1
0
*
Completion of dialing
1
1
0
*
Incoming call - Basic Operation
Idle state
0
1
1
*
CO ground tip (interval between ringing)
0
1
0
1
CO ground tip (during ringing application)
0
1
0
0
PBX presents call
0
1
0
1
PBX answers call
1
1
0
*
Talking state
1
1
0
*
CO disconnects
Talking state
1
1
0
*
CO removes tip ground (far end hangs up)
1
1
1
*
PBX opens loop (idle)
0
1
1
*
PBX disconnects
Talking state
1
1
0
*
PBX opens loop (near end hangs up)
0
1
0
*
CO removes tip ground (idle)
0
1
1
*
Summary of Contents for SX-200 ICP - 1.0 5020
Page 1: ...Release 4 0 CX CXi Controller TECHNICIAN S HANDBOOK ...
Page 9: ...Chapter 1 Introduction ...
Page 10: ...2 SX 200 ICP CX CXi Technician s Handbook ...
Page 24: ...16 SX 200 ICP CX CXi Technician s Handbook ...
Page 25: ...Chapter 2 Basic Installation ...
Page 26: ...18 SX 200 ICP CX CXi Technician s Handbook ...
Page 75: ...Chapter 3 Basic Programming ...
Page 76: ...68 SX 200 ICP CX CXi Technician s Handbook ...
Page 89: ...81 Basic Programming The keys on the 5412 PKM are numbered as follows ...
Page 98: ...90 SX 200 ICP CX CXi Technician s Handbook Figure 10 Administrator Mailbox Menu ...
Page 142: ...134 SX 200 ICP CX CXi Technician s Handbook ...
Page 143: ...Chapter 4 Advanced Installation and Programming ...
Page 144: ...136 SX 200 ICP CX CXi Technician s Handbook ...
Page 183: ...Chapter 5 Routine Maintenance ...
Page 184: ...176 SX 200 ICP CX CXi Technician s Handbook ...
Page 219: ...Chapter 6 Basic Troubleshooting and Repair ...
Page 220: ...212 SX 200 ICP CX CXi Technician s Handbook ...
Page 245: ...Chapter 7 Advanced Troubleshooting and Repair ...
Page 246: ...238 SX 200 ICP CX CXi Technician s Handbook ...
Page 269: ...Appendix A Default Database Values ...
Page 270: ...262 SX 200 ICP CX CXi Technician s Handbook ...
Page 326: ...318 SX 200 ICP CX CXi Technician s Handbook ...
Page 327: ...Appendix B Part Numbers ...
Page 328: ...320 SX 200 ICP CX CXi Technician s Handbook ...
Page 336: ...328 SX 200 ICP CX CXi Technician s Handbook ...
Page 337: ...Appendix C System Cabling ...
Page 338: ...330 SX 200 ICP CX CXi Technician s Handbook ...
Page 343: ...Appendix D Folio Views E Docs Tips ...
Page 344: ...336 SX 200 ICP CX Technician s Handbook ...