15-12 电信主要通信能力（2008—2010年）
Main Communication Capacity of Telecommunication Services, 2008-2010
指     标              Item	2008	2009	2010
长途电话业务电路(2M)
Number of Long-distance Telephones (2M)	9257	10332
数据通信网长途电路(2M)
Digital Long-distance Communication (2M)	227871	461870
长途电话交换机容量(路端)
Capacity of Long-distance Telephone Exchanges (circuit)	137826	137246	137000
局用电话交换机容量(万门)
Capacity of Office Telephone Exchanges (10 000 lines)	570.43	424.26	525.32
移动电话交换机容量(万户)
Capacity of Mobile Telephone Exchanges (10 000 subscribers)	1560	1840	1790
长途光缆线路长度(公里)
Length of Long-distance Optical Cable Lines (km)	3045	3110	3106