Products · Enghouse Interactive
Enghouse Trio Enterprise
Trio Enterprise from Enghouse Interactive is the attendant console for switchboard operators and agents, with presence, diversion status (where colleagues are and when they will be back) and calendars in one view. As an Enghouse Interactive partner, we offer Trio: installation, connection to your PBX, training and support.
About Enghouse Trio
The switchboard operator sees the whole organisation
Trio Enterprise is built for switchboard operators and agents. Incoming calls, queues, presence, calendars and skills appear in one view, so the operator can see at once who is available and put the call through to the right person first time. Switchboard operators and customer service can help each other in the same tool when things get busy.
Trio originally comes from the Swedish company Trio Enterprise AB, which changed its name to Enghouse Interactive in 2013. Trio takes presence from Microsoft Teams, and the clients are available as Teams apps. The latest version is Trio Enterprise 11.
We are an Enghouse Interactive partner, and Trio is part of our offering for switchboards and attendant consoles.
Last updated 14 October 2026.
At a glance
- Attendant console for switchboard operators and agents
- Presence, diversion status and calendar in one view
- Teams presence and Teams apps
- Speech-enabled auto attendant around the clock
- Web client with built-in softphone
- In a private cloud or in your own environment
How we help you
What we do with Enghouse Trio
Assessment
Switchboard operators, queues and groups, and which interfaces your PBX offers for diversion status and line status.
Connection to the PBX
Calls usually go over SIP, and diversion status and line status through the PBX’s own interfaces. We connect everything and test it.
Directory and calendar
The directory is synchronised from Active Directory, and the calendar in Exchange Online sets diversion status automatically.
Teams
Teams presence in Trio and the Trio apps in Teams, with app registration in Entra ID.
Training
Switchboard operators, agents and administrators, based on how you work.
Support and support contracts
Changes, upgrades and support, with Enghouse behind us.
Use cases
How Enghouse Trio is used
The switchboard of a municipality or region
Switchboard operators put calls through to thousands of staff and can see straight away who is in.
Diversion from the calendar
Staff book meetings as usual, and their phone is diverted automatically and then restored.
Switchboard and customer service together
Switchboard operators and agents help each other at busy times, during absences or outside normal hours.
Teams across the organisation
Staff use Teams, and the switchboard operator has a proper attendant console with presence and calendars.
Switchboard operator at home
The web client has a built-in softphone and needs no installation.
Auto attendant
A speech-enabled switchboard around the clock, where callers say who they are looking for.
Works with
- Most PBXs, via SIP and the PBX’s interfaces
- Microsoft Teams: presence and Teams apps
- Exchange Online and Google Calendar
- Active Directory and single sign-on
- Microsoft Dynamics 365 and other CRM systems
- Calabrio for workforce management
What we review first
- Your PBX and its interfaces for diversion status and line status
- Number of switchboard operators and agents
- Directory: AD, HR system and other sources
- Calendar and Teams
- Deployment: private cloud or your own environment
- Options such as recording, chat and auto attendant
How we work
From the first conversation to day-to-day operations
01
Discovery
We review how you work today, which systems you have and what you want to achieve.
02
Proposal
You receive a concrete proposal covering technology, timeline and cost, and we explain our choices.
03
Implementation
We install, integrate and test, and we train your users and administrators.
04
Operations and support
After go-live, we stay with you for support, updates and further development.
Common questions
Frequently asked questions about Enghouse Trio
Does Trio work with Microsoft Teams?
Yes. Presence comes from Teams, and Trio is available as Teams apps, both for staff who manage their own diversion status and for agents who take calls.
Do we have to replace our PBX?
No. According to Enghouse, Trio can be connected to most platforms and can move with you if you change PBX later. Diversion status and line status need support in your particular PBX, so we check this in the assessment.
How does the calendar integration work?
Staff book meetings as usual. Trio diverts their phone and cancels the diversion according to the calendar, and the switchboard operator can see when the person is back.
Can callers manage without a switchboard operator?
Yes. Trio Auto Attendant is a speech-enabled auto attendant that works around the clock, and spoken diversion messages offer the caller voicemail, a mobile number or another answering point.
Can Trio run in the cloud?
Yes. We can run Trio as a private cloud hosted in Sweden, and for smaller organisations in a simpler, shared form. It can also be installed in your own environment, preferably virtualised.
Can the switchboard operator work from home?
Yes. The web client has a built-in softphone and needs no installation.
Further reading
Solution
Switchboard and attendant console
Attendant console and diversion status solutions with Enghouse Trio, so that the right call reaches the right person.
Solution
Teams Phone
Make and receive calls directly in Microsoft Teams, with Direct Routing via AudioCodes and a connection to your PBX.
Industry
Municipalities and regions
Reliable communications for services that must always be reachable, with a focus on security, GDPR and clear contracts.
Guide
Teams and your existing PBX: coexistence and gradual migration
How to let Teams and your PBX work together while you move at your own pace.
Solution
Integrations and APIs
Telephony and contact centre connected to your CRM, case management, sign-in and business systems.
Let’s talk about your communications
Tell us where you stand today with your PBX, Teams or contact centre, and we will come back to you with a proposal. It costs nothing to ask.