Chapter 10. Spectrum Management of DSL Systems

10.1 Spectrum Management Background

10.2 The Concept of Spectrum Management

10.3 The Basis Systems

10.4 Spectral Compatibility via Method of Signal Power Limitations (Method A)

10.5 Foundation for Determining Acceptable Levels for Spectral Compatibility

10.6 The Spectrum Management Classes

10.6.1 Class 1: Very-Low-Band Symmetric

10.6.2 Class 2: Low-Band Symmetric

10.6.3 Class 3: Mid-Band Symmetric

10.6.4 Class 4: HDSL2

10.6.5 Class 5: Asymmetric

10.6.6 Class 6: Wide-Band Asymmetric

10.6.7 Class 7: Very-Wide-Band Symmetric

10.6.8 Class 8: Wide-Band Symmetric

10.6.9 Class 9: Overlapping Asymmetric

10.7 Technology-Specific Guidelines

10.7.1 2B1Q SDSL

10.7.2 G.shdsl

10.7.3 776/784 HDSL4 Asymmetric Spectra Using TC-PAM

10.8 Analytical Method (Method B)

10.8.1 Determination of Spectral Compatibility with Basis Systems Using Method B

10.8.2 Voice Grade Services Spectral Compatibility

10.8.3 Enhanced Business Services Spectral Compatibility

10.8.4 DDS per T1.410 Spectral Compatibility

10.8.5 ISDN per T1.601 Spectral Compatibility

10.8.6 HDSL Spectral Compatibility

10.8.7 ADSL and RADSL Spectral Compatibility

10.8.8 HDSL2 Spectral Compatibility

10.8.9 2B1Q SDSL Spectral Compatibility

The telco network was originally designed for the deployment of voice grade services. In these applications the subscriber line signals utilized frequencies below 4 kHz (approximately 200 Hz to 3.3 kHz). With the development of voiceband modems, this same voice channel was used to transmit bidirectional data up to 56 kb/s per ITU-T Recommendation V.90 [1].