# Receiving and making calls
Outside video sessions, the endpoint can have one of the following statuses:
switched to sleep mode;
displays the main screen, shows an image from the main camera, and can record or broadcast video;
Playing content from HDMI sources
Any incoming video call disables such statuses.
# Processing Incoming Calls
If the administrator has configured the automatic call answering, the TrueConf Group terminal will answer the call automatically. However, if the Do not disturb mode is enabled, the call will be automatically declined.
But if the Ask mode is selected, a call notification and a sound signal will appear on the main monitor. You can accept it by pressing the call button 
on the remote control or answering the call in the control panel.
On a terminal with the MCU function activated, you can accept subsequent calls, turning the current call into a conference. Simply accept incoming calls using the remote control or control panel just like the first call, or set up automatic acceptance of subsequent calls.
# 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
).On the Call tab, enter the address of the device you wish to call, for example,
111@10.120.1.10.
For a SIP or H.323 terminal, you can omit specifying the protocol. In this case, TrueConf Group will first attempt to call using one protocol, then the other. The protocol priority is determined in the settings.
To connect to an RTSP stream (IP camera, online broadcast, etc.), a VNC source, or NDI, make sure to specify the required format at the beginning of the address, for example, rtsp://10.120.1.10, or select the appropriate protocol from the dropdown list.
3. Press Call on the screen or the button on the remote control.
If necessary, you can call back to the same device from the Recent section in contacts.
# Call to 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 to a TrueConf conference
If you are registered on the same server via SIP or H.323, you don't need to specify the server address; it is sufficient to enter the conference number. This method is recommended. To connect to a video conference hosted on the TrueConf server, use the 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 the MCU mode is activated on your TrueConf Group, 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 and that the MCU feature is enabled in the settings.
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 
, and the Contacts window will open. You can now add a participant from any section of the contacts.
