Managed SIP Trunking
Facilitates the transition to IP communication and
ensures the highest level of security

The state-of-the-art standard for landline calling

Sunrise enables companies to have an IP connection to the public telephone network via SIP trunk. Session Initiation Protocol (SIP) is the state-of-the-art standard for landline calling. Session Border Controllers (SBC) are used to ensure interoperability between IP-based communication systems.

The session border controller cluster redundantly hosted in two Sunrise data centers, establishes the connection between the Work Smart Application (UCC) and the public telephone network, which ensures that the communication infrastructure is comprehensively protected and flexible.

We offer this SIP trunk connection, which ensures a high level of reliability, as a Managed Cloud Service.


Switch to telephony with Microsoft teams now and save costs
You are currently using Microsoft Teams to communicate with your employees in your home office? Connect your business number and save the fixed network costs.
  • icon

    Cloud-based telephone solution with Microsoft Office 365 licenses including connection of your business numbers in Microsoft Teams.

    - Sunrise Business Voice direct Cloud Connect SIP Trunk
    - Microsoft Office 365 license
    - Phone system / Business Voice  Add On

    We offer:

    Activation fees Sunrise Business Voice direct Cloud Connect of CHF 650
    Voice Option swiss unlimited (unlimited calls in Switzerland) for 3 months
        free for each user instead of CHF 8/month

Personal consultation

Call us

Send us an e-mail

Sunrise handles the operational and security aspects

No on-site installation necessary. Sunrise experts take care of the operation of the session border controller cluster or managed SIP trunks and ensure a high level of service and security. This is reflected in a Service Level Agreement (SLA) of a guaranteed availability of 99.99%, which means a maximum downtime of one hour per year.

Benefit from the advantages of IP-based communication and free yourself of high installation and operational costs. The Sunrise Managed SIP Trunk service provides you with certified state-of-the-art solutions from renowned manufacturers with the benefit of flexible migration options in the cloud as well as many years of experience of Sunrise Professional Services employees and Sunrise partners.


Your advantages with Business voice direct cloud connect
  • Make calls and stay connected with your business landline number - anywhere, worldwide

  • A guaranteed 99.99% service availability and georedundant hosting at High Security Sunrise Data Centers

  • Simple step-by-step migration of existing voice services and the existing telephone system (PBX) to the cloud

  • Sunrise Professional Services offer

Other topics that might interest you