The J7241A and J7242A OC-192/ STM-64 Multi-channel Test Cards are dual SONET/SDH, providing 10 Gb/s optical interfaces. SONET support is for OC-192. SDH support is for STM-64.
The J7241A has a 1550nm transmitter and the J7242A has a 1310nm transmitter. Both test cards have wideband receivers covering both 1550nm and 1310nm. Each test card provides multi-channel payload granularity down to STS-1/AU-3. Key functionality includes multichannel STS/High Order Path BER, STS/High Order Path APS switching times and (J1 byte based) path connectivity testing. This functionality
enables both tributary and line side testing of MSSPs (Multi-Service Switching Platforms) plus line side testing of MSPPs (Multi-Service Provisioning Platforms).
Key Features
OC-192/STM-64
Multi-channel BER, APS, and J1 connectivity measurements
Generation/measurement of mixed mapping structures
Network Services 
