Cisco - Expansion module - 12 ports - T-3 - refurbished - for ONS 15454; ONS 15000 15454
The twelve-port ONS 15454 SDH DS3iN-12 card provides twelve ITU-T G.703, GR-499, ITU-T G.704 compliant DS-3 ports per card. Each port operates at 44.736 MBits/s (Mbps) over a 75 ohms coaxial cable (with FMEC-E3/DS3). The DS3iN-12 can detect several different errored logic bits within a DS-3 frame. This function lets the ONS 15454 SDH identify a degrading DS-3 facility caused by upstream electronics (DS-3 framer). In addition, DS3 frame format auto detection and J1 path trace are supported. By monitoring additional overhead in the DS-3 frame, subtle network degradations can be detected. You can install the DS3iN-12 card in any multispeed or high-speed card slot. Each DS3iN-12 port features DSX-level outputs supporting distances up to 450 feet. With FMEC-E3/DS3 the card supports 1.0/2.3 Miniature Coax nonbalanced connectors. The DS3iN-12 can operate as the protect card in a 1:N (N<5) DS-3 protection group. It has circuitry that allows it to protect up to five working DS3iN-12 cards.
