14-12 电信主要通信能力（2007—2009年）
Main Communication Capacity of Telecommunication Services, 2007-2009
指     标 Item	2007	2008	2009
长途电话业务电路(2M)
Number of Long-distance Telephones (2M)	13753	9257	10332
数据通信网长途电路(2M)
Digital Long-distance Communication (2M)	253950	227871	461870
长途电话交换机容量(路端)
Capacity of Long-distance Telephone Exchanges (circuit)	202048	137826	137246
局用电话交换机容量(万门)
Capacity of Office Telephone Exchanges (10 000 lines)	623.27	570.43	424.26
移动电话交换机容量(万户)
Capacity of Mobile Telephone Exchanges (10 000 subscribers)	1065	1560	1840
长途光缆线路长度(公里)
Length of Long-distance Optical Cable Lines (km)	2960	3045	3110