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Basic Troubleshooting and Repair
Troubleshooting Signaling Problems
The following section covers problems caused by faulty trunk signaling.
General Signaling & Supervision Concepts
All trunks share similar basic handshaking functions. The actual signaling
mechanism will vary with the trunk type.
Seize:
(request to make a call) The calling party initiates the call by
requesting service from the called party.
Seize Acknowledgment:
(ready to receive) The called party indicates
that the call can commence.
This acknowledgment occurs when the calling party expects a response
(Dial Tone) or when the called party needs time to establish appropriate
resources (DTMF receivers).
Digits:
(who to talk with) The calling party generates the rotary pulse or
DTMF.
Stop Dial:
(slow down, can’t handle the pace) The called party generates
a signal to indicate that digits are in risk of being lost.
Receipt of Digits:
(status of call) The called party generates audible tones
to indicate the status of the call (for example, Ringback, Busy, and
Reorder).
Answer Supervision:
(called party has answered) The called party
indicates that the call has been answered. This signal is for billing
purposes (Hotel/Motel), generation of SMDR reports, etc.
Disconnect Supervision:
(release and go back to idle) Either party
generates this signal to indicate the termination of a call and to return the
trunk to the idle condition.
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 ...