Microsoft Teams
- Call2Teams Connectivity: Call2Teams acts as a middleware cloud service that connects Microsoft Teams to any Tel-Systems Hosted PBX phone system or SIP trunk provider in minutes without needing additional hardware.
- Communicator for Teams: This app brings full voice and SMS functionality directly into the Microsoft Teams environment, merging unified communications with team collaboration.
- Presence Syncing: Bicom offers a “Teams Presence Sync” feature that synchronizes a user’s Microsoft Teams status with their Communicator application status.
- Key Features: Users can make/receive calls via dial-pad, transfer calls to other MS Teams users, and use features like call recording and transcription, especially in the updated version 7.5 or higher.
Our latest Hosted PBX release includes the launch of full voice and SMS functionalities within Teams, AI-driven voicemail transcription, and the ability for call forwarding to change based on the app’s presence status.
Purpose
This integration synchronizes Microsoft Teams’ presence status with Tel-Systems client application (Communicator Desktop, Web App) extension’s presence status. For example, if users change their presence status to “Do Not Disturb” in Microsoft Teams, their presence status in the Communicator App will automatically change to “Do Not Disturb” as well.

This synchronization only works from Microsoft Teams to Communicator APP. It is not bidirectional. Changes made to Communicator’s presence status, such as setting it to “Busy”, will not impact the presence status in Teams. However, there is an exception that applies only when the gloCOM Extension is on a call while Teams’ presence status is set to “Available” or “Busy”.
Consider the following two scenarios:
- Teams’ presence is not user-configured (it is set as “Available” or “Away” due to inactivity). A user makes a call via Communicator App. Their Communicator status icon changes to “On Call”. This will also reflect in the Teams app status and show the status as “Busy/In A Call”.
- Teams’ presence is user-configured (e.g., a user explicitly puts their status as “Be right back”). A user makes a call via Communicator App. Their Communicator status icon changes to “On Call”. This doesn’t reflect in the Teams app status since the user has manually configured their presence.
Microsoft’s Active Directory includes both a “User Principal Name” (UPN) and an email address. By default, these two values are the same, but they can be configured differently. For this integration, the UPN matches the PBXware extension’s email.
If two users on PBXware share the same email address, only one of them will be able to sync their presence with the Teams user who has the matching UPN.
Additionally, presence syncing is limited to a maximum of 650 users. If more than 650 Teams users correspond to PBXware extensions, it will not be clear which user’s presence will not be synced.
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Microsoft Teams is often part of a larger communication strategy. TEL-Systems also provides Hosted PBX solutions and Cloud PBX systems for businesses that require advanced call handling, flexibility, and reliable voice services.
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