ITU’s Telecommunication Standardization Sector (ITU-T) approved 2...
ITU’s Telecommunication Standardization Sector (ITU-T) approved 2 standards for optical transport networks that use Dense Wave Division Multiplexing. ITU-T recommendation G.709 specifies interfaces for interconnection between service providers and network operators. ITU said specification paves way for midspan meetings…
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of equipment from different vendors. Second recommendation, G.959.1, specifies physical layer interfaces for optical transport network. ITU-T said work also was under way on similar standards for optical networks, including automatic switched transport networks and their control mechanisms to support bandwidth on demand and other applications. Separately, ITU released: (1) Details of agreement on international standard for single pair, high bit-rate DSL transceivers (SHDSL). It said recommendation complemented existing regional standards and was written to prevent interference to other DSL systems operating in same cable. (2) issued asymmetric DSL (ADSL) recommendations, including method for DSL system to negotiate mutually supported operating modes and ADSL test methods. (3) What it said were first standards for home phone line networking transceivers. ITU said recommendation would allow home networking devices to operate over existing phone wiring.