Originally defined as a pan-European open standard for a digital cellular telephone network to support voice, data, text messaging and cross-border roaming.
最初定义为数字蜂窝电话网络的泛欧洲开放式标准，用来支持语音、数据、文本消息和过境漫游。
Originally defined as a pan-European open standard for a digital cellular telephone network to support voice, data, text messaging and cross-border roaming.
最初定义为数字蜂窝电话网络的泛欧洲开放式标准，用来支持语音、数据、文本消息和过境漫游。
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