- 42 ports
- for ONS 15454 SDH
The E1-42 module provides 42 G.703 compliant E1 interfaces in a single-slot footprint for the ONS 15454 SDH. The E1-42 card is capable of receiving 42 independent asynchronous E1 signals and mapping them into VC-12s (virtual container) per ITU G.707 for further multiplexing, switching, or transport. The E1-42 card also provides performance monitoring and alarm reporting framing formats per ITU G.826.
Each E1 interface on the E1-42 card operates independently at 2.048 Mbps, with the physical termination of each E1 located at the front mount electrical connection (FMEC) module in the electrical facility connection assembly (EFCA) chassis. The E1-120NP FMEC is required when the E1-42 card is configured in unprotected mode. When the E1-42 card is configured in a 1:3 protection group, the E1-120PROA and E1-120PROB FMEC