What is the function of the telecom card volte?

The function of telecom card volte is high-definition voice call service, which can improve call quality and reduce call connection delay.

Both sides of the call need to use VoLTE to make the sound quality clear. This enables voice services (control and media level) to be transmitted as data streams in LTE data-bearing networks without maintaining and relying on traditional circuit-switched voice networks.

VoLTE's voice and data capacity is more than three times that of 3G UMTS and six times that of 2GSM. Because the VoLTE packet header is smaller than the unoptimized VoIP/LTE, it can also use the bandwidth more effectively.

China Telecom

China Telecom calls it VoLTE, which is a high-definition voice/video communication service based on IMS and transmitted through LTE network. Through IP transmission technology, the unified bearing of data, voice, video and SMS/MMS services can be realized, and higher-quality experiences such as high-definition voice and video calls and faster connection services can be provided.

How to turn on volte function

First edit the short message ktVoLTE and send it to 1000 1, and then reply according to the prompt. First open "volte Test", then open the phone settings, select dual card and mobile network, and select the card to open VoLTE HD call. Just turn on the volte HD call switch in the network settings bar.