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.
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。
The modem did not accept the command sent to it. Verify that the configured modem name matches the attached modem.
调制解调器没有接受发送给它的指令。验证配置的调制解调器与连接的调制解调器是否匹配。
Constructing fast response policing system is a necessary trend of the modem policing mechanism. It should depend on the aggregative advantages of all kinds of police by uniform command.
建设快速反应机制是现代警务的必然趋势，快速反应机制必须依靠统一指挥下的多警种整体作战优势。
The modem did not respond to the command sent to it. Verify that the modem is properly cabled and powered on.
调制解调器没有接受发送给它的指令。验证该调制解调器是否接线正确并且打开了电源开关。
The Pulse property contains the command string used to instruct the modem to use pulse mode for dialing. Pulse dialing is necessary for phone lines that are unable to handle tone dialing. Example: P.
Pulse属性包含用于指示调制解调器用于拨号使用的脉冲模式的命令字符串。在电话线不能做按钮拨号时必须使用脉冲拨号。例如： P。
The Pulse property contains the command string used to instruct the modem to use pulse mode for dialing. Pulse dialing is necessary for phone lines that are unable to handle tone dialing. Example: P.
Pulse属性包含用于指示调制解调器用于拨号使用的脉冲模式的命令字符串。在电话线不能做按钮拨号时必须使用脉冲拨号。例如： P。
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