SDH SFP is well-suited client interfaces

The SDH SFP is well-suited for next-generation synchronous-digital-hierarchy (SDH) add/drop multiplexers, optical edge devices, message switch peripheral processors (MSPPs), and switching systems. Using coax instead of optical fiber reduces costs dramatically in these applications. Also, the module can supplement optical modules to build a single card that supports both optical and coaxial STM-1 applications.Another family of Framer  Mapper products provide flexible mapping of multi-channel T1/E1 or DS3/E3 clients into SONET/SDH networks. The highest density product in this family provides mapping of 28 independent T1s (or 21 E1s) into an STS-1. It also supports the transparent transfer and regeneration of the independent T1/E1 clocks across the SDH SFP Transceiver and meets all the jitter  wanders specs of the T1/E1 client interfaces.Another family of Framer Mapper products provide flexible mapping of multi-channel T1/E1 or DS3/E3 clients into SDH SFP networks. The highest density product in this family provides mapping of 28 independent T1s (or 21 E1s) into an STS-1. It also supports the transparent transfer and regeneration of the independent T1/E1 clocks across the SONET/SDH network and meets all the jitter wanders specs of the T1/E1 client interfaces.