DS3i-N-12
(ONS 15454 only) The 12-port DS3i-N-12 card provides 12 ITU-T G.703, ITU-T G.704, and Telcordia GR-499-CORE compliant DS-3 ports per card. Each port operates at 44.736 Mbps over a 75-ohm coaxial cable. The DS3i-N-12 card supports 1:1 or 1:N protection with the proper backplane EIA. Four sets of three adjacent DS-3 signals (Port 1 through Port 3, Port 4 through Port 6, Port 7 through Port 9, and Port 10 through Port 12) are mapped from VC3s into a VC4 and transported as an STS-3c.
The DS3i-N-12 can also aggregate DS3 and E1 traffic and transport it between SONET and SDH networks through AU4/STS3 trunks, with the ability to add and drop DS3s to an STS3 trunk at intermediate nodes. The DS3i-N-12 card tab contain the following subtabs:
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