The ONS 15454 DS1-14 card provides 14 Telcordia-compliant, GR-499 DS-1 ports. Each port operates at 1.544 Mbps over a 100-ohm twisted-pair copper cable. The DS1-14 card can function as a working or protect card in 1: 1 protection schemes and as a working card in 1: N protection schemes.The DS1-14 card supports 1: 1 protection. The DS1-14 can be a working card in a 1: N protection scheme with the proper backplane EIA and wire-wrap or AMP Champ connectors. You can also provision the DS1-14 to monitor for line and frame errors in both directions.You can group and map DS1-14 card traffic in STS-1 increments to any other card in an ONS 15454 except DS-3 cards. Each DS-1 is asynchronously mapped into a SONET VT1.5 payload and the card carries a DS-1 payload intact in a VT1.5. For performance monitoring purposes, you can gather bi-directional DS-1 frame-level information (loss of frame, parity errors, cyclic redundancy check [CRC] errors, etc.).The DS1N-14 card supports the same features as the DS1-14 card in addition to enhanced protection schemes. The DS1N-14 is capable of 1: N (N<5) protection with the proper backplane EIA and wire-wrap or AMP Champ connectors. The DS1N-14 card can function as a working or protect card in 1: 1 or 1: N protection schemes.