Four reasons to choose ng-voice’s IMS
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Solutions
All of ng-voice’s network components follow a microservice-based design and offer multiple deployment options based on Kubernetes. Our portfolio offers turnkey solutions to enable voice services on any LTE, 5G, or other data-only networks.
IP Multimedia Subsystem (IMS core)
Our virtualized and cloud-native IMS core is the first 100% containerized and Kubernetes-based fully-fledged IMS solution, allowing deployment on bare metal (private), public, and hybrid cloud environments. Following the best practices in CI/CD and bringing a DevOps approach to telecommunications software, ng-voice’s IMS core has a high level of automation across the whole development, deployment and operation processes.
- P-CSCF: Acts as an Access SBC with full transcoding support and other features. Interfacts with the PCRF to provide quality of service management and superior audio quality
- I-CSCF: Provides full Cx/Dx interface support and selects S-CSCF based on user capabilities and load
- S-CSCF: Provides flexible application execution using a standards-based ISC interface and allows optional charging integration with standard Ro/Rf interfaces
- E-CSCF: Allows to locate users based on Location Retrieval Function (LRF) and provides routing towards PSAP’s
- BGCF: Adds interworking functions (flexible in- and outbound routing options) and provides topology hiding
- ENUM: Maps the telephone number of the destination into a URI (Uniform Resource Identifier)
Application servers
Our application servers provide the full range of supplementary services.
- IP-SM-GW: Provides SIP-based messaging services for IMS subscribers. To ensure interworking with the legacy SMSC, the IP-SM-GW uses MAP signaling
- MMTel/TAS: Provides telephony applications and multimedia functions to mobile devices. MMTel provides enhanced services such as Call Forwarding and Call blocking.
- MRF: Provides network announcements and conferencing. Implemented according to RFC4240 (Basic Media Services in SIP) and set up as combined MRF-controller (MRFC) and -processor (MRFP)
- SCC-AS: Acts as a B2BUA (Back-to-Back User Agent). Its main role is to facilitate service centralization and to coordinate SRVCC handover procedures (mid-call handover from 4G to 2G/3G).
- AGW: Consists of two components, that is, the Bootstrapping Server Function (BSF) and the Network Application Function (NAF). The NAF acts as an Authentication Proxy to an AS (Application Server), while the BSF maintains the security relations.
- Lawful Intercept Gateway: Provides X1 to X3 interfaces for lawful interception.
Policy and Charging Rules Function (PCRF light)
The PCRF dynamically allocates and manages bandwidth requirements for various use-cases. ng-voice’s version is currently only a light-weight PCRF, fulfilling the necessary functions to provide a VoLTE service
- Our PCRF solution is fully virtualized, cloud-native and distributed
- To ensure light-weight implementation, it focuses on core functions which are necessary to deploy VoLTE for mobile network operators of any size
- Gx interface towards the PGW for creating the dedicated bearer for a VoLTE call
- Rx interface towards the IMS
- The PCRF “light” is based on the same design principles as all Diameter-servers and provide the same performance and availability as HSS and OCS
