Quobis IMS

Modular, interoperable, and secure IMS architecture based on open source, with a focus on flexibility, technological independence, and cost optimization.

Datasheet


Total cost of ownership

TCO between 50% and 70% lower than proprietary IMS solutions.

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Modular Architecture

Scalability and interoperability.

P-CSCF, I-CSCF, S-CSCF and AS defined with standard interfaces, facilitates phased deployment, integration with VNFs and evolution towards cloud-native.

Scalable Core IMS ready for integration with PCRF, HSS, OCS and ENUM.

Evita vendor lock-in

Independence in the core network.

It allows operators and service providers to deploy carrier-grade IMS functions with agility, control, and customization, without dependence on traditional vendors.

  • More local control and hybrid options versus exclusively cloud-native solutions.
  • Option for private or public cloud.
  • It allows you to incorporate new features without depending on third parties.

QUOBIS IMS CORE

Control/Session Layer

Call Session Control Functions (CSCFs)

The CSCF is the heart of the IMS architecture, responsible for controlling sessions between endpoints (terminals) and applications.

P-CSCF

Proxy – Call Session Control
Function.

I-CSCF

Interrogating – Call Session
Control Function.

S-CSCF

Serving – Call Session Control Function.

e-CSCF

Emergency – Call Session Function.

3gpp Compliant


3rd Generation Partnership Project (3GPP)

It allows operators and service providers to deploy carrier-grade IMS functions with agility, control, and customization, without dependence on traditional vendors.

Components

Interfaces

Functions

P-CSCF
  • Rx: Communication with the PCRF for policy control and QoS.
  • Gm: Communication with the UEs (User Equipments), secured by IPSec tunnels.
  • Media anchoring.
  • Transcoding support.
  • SRTP (Secure RTP) support for encrypted media.

I-CSCF
  • Cx/Dx: Connection to the HSS to obtain location data and user profile.
  • Selección dinámica del S-CSCF adecuado según las capabilities del usuario y del servicio solicitado.

S-CSCF
  • Cx/Dx: With HSS (authentication, registration and service provisioning).
  • ENUM: Resolution of E.164 numbers to SIP addresses.
  • Ro: Interface with the OCS (Online Charging System) for real-time billing.
  • Registrar: IMS user session and record management.
  • Subscription and notification server (SIP Event Server).
  • Signaling support and breakout detection (when calls go out to PSTN).
  • T-ADS (Terminating Access Domain Selection) support in terminating scenarios.

e-CSCF
  • Mw: receives emergency call requests from the P-CSCF and interacts with the S-CSCF.
  • Receives emergency session establishment requests.
  • Prioritize emergency calls over normal traffic.

Integrated transcoding

Save on the use of external SBCs, reduce integration costs.

Application Servers

Service / Application layer

Application servers.

Get the features you need for your network without sacrificing its economic sustainability. At Quobis, we have extensive experience customizing and deploying all types of carrier-grade services based on reputable open-source projects.

Telephony Application Server

Offer services such as voice calls (HD voice), video calls, file transfer, rich messaging (RCS), etc.

Observability

Monitor and analyze VoIP call traffic.

Presence server

Manages user status and availability.

Voice server

Manage and play pre-recorded audio messages, such as welcome messages, error messages, or announcements.

Recorder

Capture audio and video of communication sessions on the network.

Custom

Thanks to our experience in different open source projects, we can develop all kinds of ad-hoc application servers.

If you’re on this list, Quobis IMS is for you.

  • Operators who need control and low cost.
  • Entornos híbridos (cloud + on-prem) donde se quiera control total.
  • Hybrid environments (cloud + on-premises) where total control is desired.Hybrid environments (cloud + on-premises) where total control is desired.
  • IoT networks in industrial contexts.
  • 5G/VoLTE testing, innovation or laboratory environments.