中国电信网上营业厅，为电信客户提供充值交费、费用查询、业务办理、在线客服、故障申告、投诉咨询及品牌专区等全方位的电子自助服务；中国电信—世界触手可及。

The production of Technical Specifications for a 3rd Generation Mobile System based on the evolved GSM core networks.

3G网络论坛-中国最大的3G网络，3G手机，3G上网卡，联通iphone，ophone，3G上网本等3G应用的网络讨论社区，支持移动3G(TD-SCDMA)，G3，联通3G(WCDMA)，沃wo，电信3G(EVDO，CDMA2000)，天翼189，HSDPA，LTE等3G，3.5G及4G技术在中国普及。

Elisa is the leading Finnish communications service company, founded in Helsinki in 1882.

OTE is among the five largest listed companies, with respect to capitalization, in the Athens Stock Exchange and also trades on New York (NYSE) and London (LSE) Stock Exchanges.

O2 is the UK's leading provider of mobile phones and broadband, offering the best mobile phone, sim only, and broadband deals. Save money by buying direct!

中国通信网又名中通网、中国通信资源网、通信资源网，是最具权威、专业、人气的中文通信业门户网站。

上方网是中国移动互联网、无线增值、手机客户端第一行业门户，聚集各类手机运营企业，包括各大移动运营商， SP运营商、无线互联网站点（WAP）、手机客户端、手机游戏、数字音乐、二维码、移动商务以及基于手机各种业务的运营企业和从业人员。

提供光通信产业和光通讯技术的新闻和趋势，介绍光纤通讯相关产品动态，光纤通信高端访谈，齐全的光通信技术文库在线阅读。

AT&T is a leader in telecommunication services, including cell phones, wireless, U-verse, digital TV, high speed internet, DSL, home phone, and bundled services.