scope:

This technical requirement document defines a minimal set of static electrical requirements for a remote end splitter. The parameters defined include terminations, frequencies, testing, test signatures, DC characteristics, voice band characteristics, attenuation, envelope delay distortion, impedance, longitudinal balance, and metallic balance. Additional features and performance characteristics such as dynamic testing are beyond the scope of this document.

Dynamic testing of a splitter is performed in a live POTS and xDSL modem environment. This includes, but is not limited to, a complete system setup using CO and remote splitters, TU-C and TU-R modems, CO ringers and a telephone. Performance of the splitter is measured by evaluating the Layer 1 primitives reported by the TU-C and TU-R (CRCs, FECs, etc.) during on-hook, off-hook, ringing, and ring trip events. This work is being covered by the Broadband Forum.

The reader should note that implementations addressing the applications described herein may also be subject to other industry specifications such as TIA-968-A, GR-1089-CORE, and UL documents.

Purpose

This technical requirement document is intended to facilitate the provisioning of various digital subscriber line (DSL) technologies and voice band services over the same loop. The document is written broadly to permit the remote end splitter to be used for current DSL technologies and potential new DSL technologies that use the same frequency spectra.