Historical
ANSI T1.612-1992 (R1998)
ISDN Terminal Adaptation Using Statistical Multiplexing
This standard describes a protocol for use in ISDN point to point 64 kbit/s, H0, H10, H11 or D (for Frame Relay) connections to accommodate lower speed devices conforming to other standards. It does not define the specific mapping between those standards and the protocol defined as this is viewed as an implementation matter and does not require standardization.
Alliance For Telecommunications Industry Solutions [atis]