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Cloud IMS


The Ericsson IP Multimedia Subsystem (IMS) is a system consisting of virtual network functions. IMS delivers rich real-time communication services for both consumer and business users over any access network, for any device type, including smartphones, tablets, wearables, laptops, and fixed-line phones. Examples of communication services include HD voice (VoLTE and 5G voice), Wi-Fi calling, enriched messaging, enriched calling with pre-call info, video calling, HD video conferencing, and web communication. Ericsson IMS networks are deployed globally.


User benefits

A new communication experience from multimedia services with the quality, security, and reliability expected of a telecom-grade service. With Ericsson’s global reach, users do not have to wonder whether the other person’s network, device, or application is compatible with their own.

Service provider business benefits

In order to rationalize networks, save operational costs, and harmonize the services, mobile and fixed networks are converging. In line with this, IMS provides one common system for all IP-based communication services both for consumers and business users.

Ericsson solution benefits

Ericsson provides complete end-to-end offerings for communication solutions, including system integration services. Ericsson has the most field-proven IMS solution in the world, enabling fast deployment, cost-efficient expansion, secured interoperability, and best-in-class performance within a broad ecosystem.

Included portfolio
Authentication Federation Gateway

Authentication and security platform that enables service providers to cover an extensive set of devices.

Call Session Control Function

Manages all signaling from end-user to services and other networks allowing convergence of networks.

Enriched Messaging

Enables the smooth evolution of existing SMS and MMS services toward IP-communication infrastructure.

Media Resource Function

Provides virtualized solution for media services, like announcements, tones and conferencing.

Multimedia Telephony Application Server

An application server for voice and multimedia applications providing cost efficient services.

Session Border Controller

A product to guarantee security and interoperability between IMS and other networks.

Enterprise Communication

Helps operators to use their network assets as the differentiator and provide services with agility.

Downloads News Links
Promotion Material
Innovative service offerings for consumers and enterprise users with Ericsson VoLTE PDF May 13, 2020
Interactive calling over 5G - technology overview PDF Jan 20, 2020
What is VoLTE PDF May 13, 2020
Why VoLTE means services to monetize PDF May 13, 2020
Public Ericsson virtual IMS references

Zain Jordan signs Cloud IMS agreement with Ericsson

Spain’s MASMOVIL Group extends partnership with Ericsson as main supplier for its new 5G Core

Telefonica and Ericsson partner to virtualize networks

Vodafone Australia to virtualize network

Softbank to virtualize network

Telefónica deploys first cloud-based VoLTE in Colombia

Vodafone deploys first cloud-based VoLTE and Wi-Fi calling in the Netherlands

Swisscom - telco cloud infrastructure and NFV of core network functions 

Telstra deploys Ericsson Telecom Cloud in full stack

Eastlink upgrades VoLTE services with Ericsson in Canada

Ericsson to transform Wind Tre core network in Italy

Ericsson and MásMóvil sign strategic agreement for core network evolution and managed services

Vivacom launches 4G Voice service and Wi-Fi calling in Bulgaria

Telenor selects Ericsson for 5G core network transformation

Airtel selects Ericsson for VoLTE expansion

Carolina West Wireless signs multi-year network modernization deal with Ericsson

Telma Madagascar selects Ericsson for next-generation core and radio network upgrade

Ericsson to modernize Telekom Albania core and radio networks

Ericsson chosen in Altice Portugal for fixed Telephony

Ericsson selected as China Mobile 5G RAN and core network vendor

Liberty Latin America selects Ericsson for major network evolution

Telma and Ericsson launch commercial 5G services in Madagascar

Ericsson brings 5G to Greece with WIND Hellas

Mobily expands Ericsson managed services partnership in Saudi Arabia

Communication Services portfolio highlights
      Communication Services - main offerings
White papers
      Communication services over LTE, Wi-Fi and 5G
      Evolved HD voice for LTE (EVS)
 More information
Read more about 5G Voice