© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration : Unit 3 Slide 1 Unit 3 Basic Signaling

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 2 Objectives Explain bandwidth and signal distortion  Explain bandwidth and its relationship to Frequency  Explain how signal distortion occurs Describe the signal conversion process (E&M Signaling) and PCM.  Describe E&M Signaling  Describe the signal conversion process.  Explain, in detail the 4 steps of signal conversion (Filtering, Sampling, Quantizing and Encoding).  Describe how DPCM operates and compare and contrast it with ADPCM.  Compare and contrast digital and analog signaling. Explain CAS QSIG and other Signaling Techniques  Describe CAS signaling.  Describe Bell system MF signaling.  Describe CCITT Number 5 signaling.  Describe QSIG signaling.  Describe the difference between in and out of band signaling.  Compare and contrast loop-start and ground-start signaling.  List and explain the features of different types of signaling.  Explain why ISDN signaling is different.

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 3 Sampling Process

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 4 Imperfections in Quantizing Process

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 5 Compounding Equations

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 6 Comparing A-Law and u-Law

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 7 Segmented Encoding Process for u-Law

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 8 E&M Signaling Off-HookOn-HookOff-HookOn-Hook IBatteryGround Open IIBatteryOpenGroundOpen IIILoop currentGround Open IVGroundOpenGroundOpen VGroundOpenGroundOpen

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 9 E&M Signaling Type I

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 10 E&M Signaling Type II

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 11 E&M Signaling Type III

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 12 E&M Signaling Type IV

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 13 E&M Signaling Type V

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 14 Supervision and Address-Signaling Sequences

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 15 CCITT Address Signals SignalFrequencies in Hz Digit 1700 and 900 Digit 2700 and 1100 Digit 3900 and 1100 Digit 4700 and 1300 Digit 5900 and 1300 Digit and 1300 Digit 7700 and 1500 Digit 8900 and 1500 Digit and 1500 Digit and 1500 Code and 1700 Code and 1700 KP11100 and 1700 KP21300 and 1700 ST1500 and 1700

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 16 ISDN BRI Reference Points BRI S/T TE2 TE1 TA NT1 Local ISDN Exchange R U

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 17 Message and Type Codes Q.931 Message TypeMessage Type Value Setup message Setup acknowledgement message Call proceeding message Progress message Alerting message Connect message Connect acknowledgment message Disconnect message Release message Release complete message Information message

© 2006 ITT Educational Services Inc. IT412 Voice and Data Integration: Unit 3 Slide 18 QSIG Protocol Stack OSI ReferenceQSIG ProtocolQSIG Standard L1NoneBased on interface being used L2NoneIdentical to ISDN L2 (LAPD) L3QSIG BCECMA 142/143; ETS300* 171/172 QSIG GFECMA 165; ETS QSIG protocols for supplementary services Separate specifications, such as call forward and call transfer L4-L7Application-based service elements Transparent to the network