TDAT04622
The TDAT04622 device contains a subset of the TDAT042G5 device. The TDAT04622 device functions as described in the TDAT042G5 SONET/SDH 155/622/2488 Mbits/s Data Interface Data Sheet (DS98-193SONT-4) with the following limitations:
■ Quad OC-3 operation only or single OC-12 operation only.
■ Single UTOPIA port.

TDAT021G2
The TDAT021G2 device contains a subset of the TDAT042G5 device. The TDAT021G2 device functions as described in the TDAT042G5 SONET/SDH 155/622/2488 Mbits/s Data Interface Data Sheet (DS98-193SONT-4) with the following limitations:
■ Quad OC-3 operation only or dual OC-12 operation only.
■ Two UTOPIA ports.

TDAT042G5
The TDAT042G5 device contains all functionality as described in the TDAT042G5 SONET/SDH 155/622/2488Mbits/s Data Interface Data Sheet(DS98-193SONT-4).