这些协议支持高比特率语音和有限的数据通信功能。
These protocols support high bit rate voice and limited data communications.
第一代模拟和第二代数字系统支持语音通信和有限的数据通信能力。
The 1st and 2nd generation wireless telecommunication system provide voice traffic and limited data traffic.
第一代模拟和第二代数字系统支持语音通信和有限的数据通信能力。
The 1st and 2nd generation wireless telecommunication system provide voice traffic and limited data traffic.
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