E3-12
The E3-12 card provides 12 ITU-compliant, G.703 E-3 ports per card. Each interface operates at 34.368 Mbps over a 75-ohm coaxial cable (with the FMEC-E3/DS3 card). The E3-12 card operates as a working or protect card in 1:1 protection schemes.
Note The E3-12 card can be deployed in a central office or a carrier's exchange.