Telecom walkie-talkie network registration failed

1. First, check whether the IoT card has been activated.

2. The second question is whether there is 4G network coverage in the area.

3. Finally, check whether the 4G network data roaming switch of the mobile data traffic of the IoT card is turned on. After the above method, the telecom walkie-talkie network registration will not fail. Telecommunications intercom, also called "mobile phone intercom". China Telecom's intercom business is based on China Telecom's wide coverage, large-capacity mobile communication network and carrier-class business management platform. It uses CTchat technology to provide customers with professional mobile phone terminals with PTT functions. Half-duplex PTT service.