Anritsu 5616-000-XTA CMA5000 XTA 2.5G module. Test Module for T-Carriers/PDH and SONET/SDH technologies up to 2.5Gig It provides: *Optical interfaces at 1310nm and 1550nm for OC3/12/48 and STM1/4/16 *Electrical interfaces for DS1, DS3, STS1, STS3, and E1, E3, E4, STM1