On this page
Voice Convergence
What is Voice Convergence?
Voice Convergence , often referred to as FMC (Fixed-Mobile Convergence), connects mobile voice services with a business communication platform. Traditionally used with PBX and Centrex solutions, it is now commonly integrated with Unified Communications (UC) and value-added service (VAS) platforms. This enables a seamless voice experience across mobile devices, fixed lines, softphones and applications.
With Transatel’s Voice Convergence service, voice control and call routing are delegated to the Service Provider’s platform, while Transatel provides the mobile connectivity layer and mobile call termination.
It can be used in conjunction with SMS Convergence to provide VAS on all standard traffic.
How does Voice Convergence work?
Calls to and from mobile subscribers are routed between the Transatel mobile network and the Service Provider’s platform through a SIP interconnection. The Service Provider can then apply its own call handling logic and services before routing the call to its final destination.
What can the Service Provider do with Voice Convergence?
Voice Convergence allows Service Providers to integrate mobile users into their communication environment and apply services such as:
- Unified Communications (UC)
- Call routing
- Hunt groups
- IVR services
- Call recording
- Analytics and compliance services
- Voicemail
- Call forwarding
What types of calls are supported?
Voice Convergence supports a variety of call scenarios, including:
- Calls from mobile users to public destinations
- Calls to mobile subscribers
- Calls between mobile and fixed users
- Calls to hunt groups
- Calls between subscribers within the same organisation or service environment
- Voicemail and call forwarding scenarios
Emergency calls are always handled directly by the serving mobile network and are not routed through the Voice Convergence platform.
Who manages the voice services?
The Service Provider manages the voice services and call handling logic through its own platform. This may include voicemail, call forwarding, call recording, IVR applications, analytics, and other value-added services.
Transatel remains responsible for mobile network services, subscriber connectivity and call termination towards mobile users.
Is voicemail available?
Yes. By default, voicemail is managed by the Service Provider platform.
Optionally, Service Providers may use the Transatel Voicemail Service, which supports multiple languages including English, French, German, Italian, Dutch and Chinese.
Is call forwarding supported?
Yes. Call forwarding is typically managed by the Service Provider platform.
Optionally, call forwarding can also be activated at mobile network level, depending on the service configuration.
Does Voice Convergence work when roaming?
Yes. Voice Convergence services are available whether the subscriber is connected to the home network or roaming on a visited network. VoLTE services are also supported where available.
Is Voice Convergence compliant with STIR/SHAKEN?
Yes. Voice Convergence supports the French MAN (Mécanisme d’Authentification des Numéros) framework, based on STIR/SHAKEN principles, helping operators comply with caller authentication requirements and combat caller ID spoofing.
How is connectivity established?
Voice Convergence uses a SIP interconnection between the Service Provider platform and Transatel. The Service Provider platform communicates with Transatel’s network through dedicated SIP trunks and Session Border Controllers (SBCs).
Need more information?
For implementation details, supported call flows and technical requirements, please contact your Transatel account manager.