STRATUM 3 SSU 2/R3.1 clei The Stratum 3 SSU-2 Module provides Stratum 3 timing synchroniz ation to an incoming timing signal for the 7470 system. The Stra tum 3 SSU-2 Module is an optional module for the Control Card 2 (90-3346-01) INTEG CALLP/PNNI CARD-2

STRATUM 3 SSU 2/R3.1 clei The Stratum 3 SSU-2 Module provides Stratum 3 timing synchroniz ation to an incoming timing signal for the 7470 system. The Stra tum 3 SSU-2 Module is an optional module for the Control Card 2 (90-3346-01) INTEG CALLP/PNNI CARD-2 R3.1 (90-6226-X1) and INTEG CALLP CARD-2/R3.1 (90-6226-X2). This assembly contains a Telcordia CLEI (Common Language Equipment Identifier) label.