G.hs: Cross-talk Impairment Identification

xDSL modems will be sensitive to impairments created from excessive cross-talk with other lines carrying ISDN, T1/E1 or even other xDSL modems. Some studies have indicated that xDSL operation may not be possible if another pair of wires in the same cable bundle is carrying ISDN or T1/E1. Since the wiring plant for a telephone operating company evolved over many years, it is unrealistic that the routing of these digital signals can be determined in advance when a customer orders xDSL service. We propose the addition of some relatively simple functions in a xDSL modem in order to aid with the determination of these potential problems.

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