Anritsu 5604-000-XTA CMA5000 XTA 622 module. Test Module for T-Carriers/PDH and SONET/SDH technologies up to 622 Mb/s It provides: *Optical interfaces at 1310nm and 1550nm for OC3/12 and STM1/4 *Electrical interfaces for DS1, DS3, STS1, STS3, and E1, E3, E4, STM1