| 单词 | CSA (Carrier Serving Area) |
| 释义 | CSA (Carrier Serving Area) The geographical area served by a Central Office (CO), a CSA is gen- erally limited to a radius of approximately 18,000 feet, which is the maximum reach of a typical copper Unshielded Twisted Pair (UTP) local loop. An amplifier or regenerative repeater is required to extend a UTP loop beyond that distance. See also CO and local loop. |
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