(ONS 15454 SDH only) The E1-42 card provides 42 ITU-compliant, G.703 E-1 ports. Each port operates at 2.048 Mbps over a 120-ohm, twisted-pair copper cable. The E1-42 card uses different front mount electrical connection depending on the type of protection required. Use FMEC E1-120 NP for unprotected operation, the FMEC E1-120PROA for 1:3 protection in the left side of the shelf, or the FMEC E1-120PROB for 1:3 protection in the right side of the shelf.
Caution
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