Describes a base rate and format along with a multiplexing scheme that will result in a modular family of rates and formats available for use in optical interfaces. Supplement T1.105a adds definitions and references for FDDI; extends the definition of the payload identifier (signal label) fields in the path overhead for STS and VT level mappings of the SONET digital hierarchy; adds the definition of a new Super-Rate mapping to 12.3 for asynchronous transport of FDDI (ISO 9314) physical layer data at 125,000 Megabits per second, and adds figure 61a to illustrate this.
ANSI T1.105-2001 history
2001ANSI T1.105-2001 Telecommunications - Synchronous Optical Network (SONET) - Basic Description Including Multiplex Structures, Rates, and Formats