广电的网络连接不上mqtt

根据引用中的描述，如果您的设备使用广电网络连接MQTT，应该在运营商标识符中填写"4"。但是根据作者实际测试的结果来看，只有填写"0"才能成功连接。因此，您可以尝试将运营商标识符填写为"0"，以解决广电网络连接MQTT无法成功的问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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