The 4G/LTE core network is primarily designed to handle data traffic. However, it can also support voice communication using two specific techniques. Can you identify these two techniques and explain how each of them works in the context of the 4G/LTE network?
Tech Junction Answered question November 28, 2024
The 4G/LTE core network supports voice communication using two main techniques:
- Voice over LTE (VoLTE):
- How it works: VoLTE is an IP-based technology that allows voice calls to be transmitted over the LTE network. It uses the IP Multimedia Subsystem (IMS) to manage and deliver voice services. VoLTE provides high-quality voice calls by sending voice data as packets over the LTE network, ensuring better voice clarity and faster call setup times compared to traditional 2G and 3G networks.
- Circuit-Switched Fallback (CSFB):
- How it works: CSFB is a technique used when a device needs to make or receive a voice call. The device temporarily switches from the 4G network to a 2G or 3G network to handle the call. Once the call is completed, the device switches back to the 4G network for data services. This method was initially used by carriers to provide voice services before VoLTE was widely deployed.
These techniques enable the 4G/LTE network to support both high-speed data and reliable voice communication.
Tech Junction Answered question November 28, 2024