# Receiving and making calls
Outside video sessions, the endpoint can have one of the following statuses:
switched to sleep mode;
displays the main screen;
Playing content from HDMI sources
Any incoming video call disables such statuses.
# Processing Incoming Calls
If the administrator has configured automatic call acceptance, the TrueConf Group terminal will automatically answer the call. If the Do not disturb mode is set, the call will be automatically declined.
But if the Ask mode is selected, a call notification will appear on the main monitor. You can accept it by pressing the call button 
on the remote control or by answering the call in the control panel.
On a terminal with the MCU feature activated, you can accept additional incoming calls, turning the current call into a conference. To do this, simply accept incoming calls using the remote control or control panel in the same way as the first call.
# How to call another endpoint/device
# How to make calls via SIP, H.323, RTSP, VNC and NDI
Use the address book to call frequently used numbers.
In the main menu, select Contacts (or press the call button on the remote
).In the Call tab, enter the address of the device you want to call, for example,
111@10.120.1.10.
You do not have to specify the protocol for an SIP or H.323 endpoint. TrueConf Group will try to detect the protocol automatically.
To connect to an RTSP stream (IP camera, online stream etc.), VNC or NDI source, add the prefix in the correct format to the beginning of the address, e.g., rtsp://10.120.1.10 or select the format in the drop-down list.
3. Press Call on the screen or the button on the remote control.
Subsequently, you will be able to call this device again from the Recent section of your contacts.
# Call a user
To call a TrueConf Server user, use one of the following formats:
<TrueConf_ID>@<server><TrueConf_ID>@<server>:<port>
where:
<TrueConf_ID>: user's TrueConf ID<server>: server IP address or name that you need to call<port>: connection port (if it differs from standard5060for SIP and1720for H.323). Read more about SIP/H.323 connection settings on TrueConf Server in our documentation.
For example:
james@video.company.com
james@video.company.com:5070
# Call into a TrueConf Conference
To join to a video conference on TrueConf Server, use a call string in one of the following formats:
00<Conference_ID>@<server>00<Conference_ID>@<server>:<port><Conference_ID>@<server><Conference_ID>@<server>:<port>
, where:
<Conference_ID>: Conference ID<server>: Server IP address or name<port>: Connection port (if different from the standard one)
For example:
001949195144@video.company.com
001949195144@video.company.com:1730
\c\1949195144@video.company.com
\c\1949195144@video.company.com:1730
If necessary, you can explicitly specify the call protocol (SIP or H.323) to the left of the address input field.
# Viewing Call Information
You can view technical details right during a video call. To that end, press the button 
on the remote control and select Connection details. At the bottom of the screen, you will see a list of your ongoing call parameters:
User's address
Call duration
Used codecs
Video resolution and speed
Packet loss statistics for audio and video streams. In this case, the last 10 seconds rather than the entire call are used to calculate the loss percentage.
If TrueConf Group is set to MCU mode, you can switch between the statistics windows for each participant using the left and right buttons on the control panel:
# How to Set Up a Group Conference
To conduct group conferences on TrueConf Group, ensure that the MCU module is included in your package.
To set up a conference, you need to call any user following the above instructions and then add other participants one by one.
# Adding users during a session
In the conference menu, click 
, after which the Contacts window will open. Now you can add a participant from any section of the contacts.
