# Setting up a conference

A user can set up or prepare a conference call with up to 6 users. This can be done in four different ways:

- "Conference bridge": The conference participants choose a specific call number and are connected with the conference after entering a PIN.

- "Preconfigured conference": Here the conference participants are preconfigured in the system configuration and are all called up at the same time.

- "Variable conference": Here the conference participants are all listed in the same dialling string and are all called up at the same time.

- "Three-party conference (conference from enquiry call)": The conference is set up one participant at a time. The participants in the conference are called one after the other and connected individually.

notes:

- Conference participants hear an attention tone when they join the conference. This tone can be switch off on the entire system. Comply with the national data protection terms. With a three-party conference in the public exchange, the signalling depends on the network provider.
- Conferences take up hardware resources. Up to 6 conference participants are allowed in a conference.
- If one or more users are external users or virtual network PISN users, the settings authorising exchange-to-exchange traffic will have to be observed.
- On SIP phones of the Mitel 6700 SIP / 6800 SIP series, the Mitel BluStar 8000i and a number of standard SIP phones, three-party conferences are possible locally on the phone. For this, the Multi lines in the terminal configuration must be at least 2 and the parameter Conference circuit = In phone.

Parent topic: Conference
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