GPRS设备类似于拥有扩展AT命令集的调制解调器，在进入数据模式之前必须使用AT命令定义一个上下文。
A GPRS device, which resembles a modem with an extended at command set, must define a context using an at command before it enters data mode.
正则表达式是使用各种构件构建的复杂模式规范，并且随着模式变得越来越复杂，它看起来就像是调制解调器的线路噪声。
Regular expressions are complex pattern specifications built using building blocks that end up looking more like modem line noise as the pattern gets more complex.
协议定义了在选定的模式下面调制解调器将如何工作。
The Protocol Selection defines how the modem will operate within this mode.
这调制解调器一直被称为进入待机模式时自动获得的第一次。
This modem has been known to go into stand-by mode automatically when acquired for the first time.
这调制解调器一直被称为进入待机模式时自动获得的第一次。
This modem has been known to go into stand-by mode automatically when acquired for the first time.
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