--- title: What VoLTE means for the enterprise VoIP system description: The superior capacity and quality of VoLTE, as well as its more attractive cost per service ratio, implies clear benefits for businesses. image: https://info.teledynamics.com/hubfs/blog-images/graphicstock-city-scape-and-connection-concept-and-4g-lte-font_HuxP0jweog-25pct.png --- [Skip to content](https://info.teledynamics.com/blog/what-volte-means-for-the-enterprise-voip-system#main-content) [(800) 847-5629](tel:+1(800)%20847-5629) Search [Become a Dealer](https://www.teledynamics.com/become-dealer) [Log In](http://www.teledynamics.com/) - Products - [Full Product Catalog](https://www.teledynamics.com/catalog) - [VOIP and UC](https://info.teledynamics.com/blog/what-volte-means-for-the-enterprise-voip-system#tab2) - [Business Equipment](https://info.teledynamics.com/blog/what-volte-means-for-the-enterprise-voip-system#tab3) - [Consumer Electronics](https://info.teledynamics.com/blog/what-volte-means-for-the-enterprise-voip-system#tab4) - 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[Tweet](https://twitter.com/share) ![VoLTE and the enterprise VoIP system](https://info.teledynamics.com/hs-fs/hubfs/blog-images/graphicstock-city-scape-and-connection-concept-and-4g-lte-font_HuxP0jweog-25pct.png?width=640&name=graphicstock-city-scape-and-connection-concept-and-4g-lte-font_HuxP0jweog-25pct.png "VoLTE and the enterprise VoIP system") As investments in the legacy circuit-switched voice network wane, national telephone operators are directing their energies to mobile and IP networks. This focus has brought about many “Voice over X” or VoX technologies over the past few years. While VoIP (voice over IP) is one of the most important ones, many related technologies are also proliferating such as VoWiFi, VoDSL, and VoZigbee. The VoX technology we examine in this article is voice over Long-Term Evolution or VoLTE, which has exciting implications for enterprise VoIP telephone systems. **What is VoLTE?** VoLTE is part of an [ITU-R](http://www.itu.int/en/ITU-R/information/Pages/default.aspx) standard for high-speed communications for mobile phones and other data terminals over LTE networks. LTE is also known as 4G, the next-generation technology that is replacing 2G/3G mobile networks. VoLTE is based on the IP Multimedia Subsystem (IMS), which means the voice service being delivered as data flows within the LTE data bearer, as opposed to over the traditional circuit-switched voice network employed in previous mobile network technologies. This approach removes the dependency on, and ultimately the requirement for, any legacy circuit-switched voice network to be maintained. **Technical implementation** There are always two parts to a voice call: the bearer (which is the portion that contains the voice packets themselves), and the signaling. Signaling for VoLTE is maintained using Session Initiation Protocol (SIP), the most widely used open-source protocol for VoIP. The bearer takes advantage of the IMS infrastructure and is provisioned using IP at the network layer (layer 3), and RTP and UDP at the transport layer (layer 4). Looking at the above description, one can see that VoLTE is not that much different from “plain old VoIP” when it comes to the protocols used for the transmission of the bearer and signaling. The differences become more pronounced at lower layers; that is, at the physical (layer 1) and data link (layer 2) layers. The standards used for the actual transmission of the radio waves and the physical addressing of antennas and mobile devices differ substantially from Ethernet or Wi-Fi. But that’s the wonderful thing about the layered OSI model: upper layers don’t have to “know” about the technologies and the mechanisms being used at lower layers to operate correctly, nor do the lower layers have to “know” specific information about the payload they are carrying. **What this means for you and your customers** VoLTE brings with it a whole series of new telco services and options for enterprise voice over IP systems. The mobile telephony network is now a more viable option for the primary choice of connectivity to both the PSTN and the internet via a [GSM gateway](https://info.teledynamics.com/blog/why-you-should-connect-your-voip-phone-system-to-a-mobile-network) because of VoLTE’s increased capacity and quality, as well as its more attractive cost-per-service ratio. After all, VoLTE has up to three times more voice and data capacity than 3G UMTS and up to six times more than 2G GSM. Furthermore, it frees up bandwidth for data connectivity because VoLTE’s packet headers are smaller than those of unoptimized VoIP and LTE. The fact that SIP is inherently used on the LTE system means that voice goes through fewer translations between packetized and circuit-switched voice, allowing for a simpler and more elegant voice network design with the use of SIP from end to end. **CONCLUSION** Understanding how VoLTE can fit into an existing network allows you to more accurately assess its suitability for each situation. The superior capacity and quality of VoLTE implies clear benefits for businesses. Connecting a client’s VoIP phone system to the 4G mobile network can be an effective way to prepare your customers for an integrated, all-IP future. ---   You may also like: [Should your business go all-IP?](https://info.teledynamics.com/blog/should-your-business-go-all-ip) [Why you should connect your VoIP phone system to a mobile network](https://info.teledynamics.com/blog/why-you-should-connect-your-voip-phone-system-to-a-mobile-network) [How networks affect sound quality](https://info.teledynamics.com/blog/how-networks-affect-sound-quality)     Topics: [Business Telephone System](https://info.teledynamics.com/blog/topic/business-telephone-system), [VoIP](https://info.teledynamics.com/blog/topic/voip), [SIP](https://info.teledynamics.com/blog/topic/sip), [Trends](https://info.teledynamics.com/blog/topic/trends), [Mobile](https://info.teledynamics.com/blog/topic/mobile) ### Comments ## Welcome to our Think Tank In this blog you'll read our thoughts on business telephone systems. While a lot has changed in telecom since TeleDynamics was founded in 1981, we remain as committed as ever to delivering the best customer service in the industry. If you would like elaboration on a specific topic, please let us know in the comments section. 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