O'Reilly logo

DSL Advances by Peter J. Silverman, John M. Cioffi, Massimo Sorbara, Thomas Starr

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

10.3. The Basis Systems

The basis systems are loop transmission systems deployed in the network that provide the basis for establishing spectral compatibility criteria for within a loop cable. Selection of the basis systems list required industry consensus in order to be adopted in the spectrum management standard.

The basis systems list per the first issue of the spectrum management standard T1.417 are as follows:

  1. Voice grade services, which include analog voice service, network signaling, data (e.g., via voice-band modem) and tones that utilize the frequency from 0 to approximately 4 kHz.

  2. Digital data service (DDS) based on signals defined in T1.410-1992. These signals use alternate mark inversion at a maximum line rate of 72 kb/s. The services ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required