Microsoft Teams: Are there any theoretical limits for the number users that can participate in Teams Shared Calling?

Question

Is there any limit on the number of users that can participate in Microsoft Teams Shared Calling? Company has 1000 employees that rarely make external calls and do not need an assigned DID. Would there be any limitations of the Auto Attendant that would make it difficult to support 5,000 or even 100,000 users? If customers are calling into the organization and using dial by number or dial by name that there should not be a issue with the Auto Attendant queue limit of 200 being exceeded.

Answer 1

@don happe

Microsoft Teams is designed to support large organizations, and its Auto Attendant and Call Queue features are built to handle significant call volumes. Here are some key points to consider:

1. User Limitations:

• Microsoft Teams itself supports up to 300,000 users per organization. Given that your company has 1,000 employees, you're well within the supported limits.

2. Auto Attendant:

• Auto Attendants can handle a large number of calls and support complex call flows, including nested auto attendants. - You're correct that the Auto Attendant queue limit is 200 calls, but this refers to the number of concurrent calls that can be handled in a queue. This should not typically affect the dial-by-name or dial-by-number functionality, as these features route calls efficiently through the Auto Attendant system.

3. Call Queues:

• Each call queue can also handle up to 200 concurrent calls. You can create multiple call queues if needed. - Calls can be distributed among various call agents based on the routing method you choose (e.g., round-robin, longest idle, etc.).

4. External Calls:

• If most employees do not make external calls and do not need an assigned DID (Direct Inward Dialing), they can still participate in the shared calling environment using Teams.

5. Dial-by-Name/Number:

• The dial-by-name or dial-by-number directories can effectively route calls to the appropriate employee or department without issues related to the concurrent call limit.

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