# Calls
# How to call TrueConf users
To call a TrueConf user, you can use one of the options described below.
# From the search field
Try search in TrueConf application. Enter the user's name or ID in the search box and click the Call button 
.
# From the context menu
You can make a call by selecting the Call option in the user's context menu.
# From chat
If you need to call a user you are currently chatting with, click on the button located in the right upper corner of the chat window.
# From the address book
Select a user and click the call button in the pop-up panel.
# How to make phone calls
You can call a phone number in the user profile, in the search field or in the address book dialer.
Phone calls will be possible only if your TrueConf Server is integrated with a PBX or VoIP service.
# Calls from user profile
If the phone number is specified in the user profile, you can click on the field with the number and the application will start a call to the user in the following format: #tel:phone_number:
# From the address book search field
Enter a phone number in the international format in the search field. Next, click the Call button in the menu that appears below. For example, you can dial +1 (833) 878-32-63 to call TrueConf sales department.
You can also call extension numbers connected to your PBX.
For example, if a user has a 910 extension number, enter the string in #tel:910 format in the search field of your address book to make a call.
# From the dialer
You can call a phone number from TrueConf client applications for Windows, Linux, macOS or Android by using the dialer. In the dialer window you can also view the list of the users whose phone numbers are added on TrueConf Server.
In TrueConf client application, you can access the dialer by clicking on the button located on the top panel: 
.
# How to call SIP/H.323 and RTSP endpoints
To call third-party video conferencing endpoints or servers, enter the call string in the format corresponding to the user or device you are calling. When entering the address, you can see a new darkened interactive string next to the filtered list of the address book contacts.
Supported devices and call string formats:
- SIP endpoints (including DTMF commands)
- H.323 endpoints
- RTSP devices.
Automatic processing of URLs for meetings created on third-party services like Zoom, Lifesize Cloud, or BlueJeans, for example:
https://zoom.us/j/842858705https://call.lifesizecloud.com/10132060https://bluejeans.com/7110871129
# Using tone dialing
You can send DTMF commands to DTMF-compatible devices in RTP EVENT (opens new window) and SIP INFO (opens new window) modes. To learn more about DTMF commands, please read the documentation provided by the manufacturer for your device.
The following symbols can be used to add pauses directly to the call string:
,— short pause (a few seconds);— long pause (waiting for a dial tone from the caller).
For example, if you want to call a SIP server with IP 192.168.1.99 from the TrueConf client application to a conference protected by PIN 123456, you can avoid manual PIN entry by using a URI with a preset:
#sip:@192.168.1.99;123456
To call 13478783263 with extension 222, you can use the following call line:
#tel:13478783263,222
# Actions when receiving an incoming call
In case of an incoming call or conference invitation, you can perform multiple actions apart from accepting or declining the call. The following options are available:
Click
and 
to turn off your camera and microphone before accepting the call (you can also turn on these devices if they had been disabled before)Click
to send a message instead of replying to a call. You select one of the short answers or write your own message. The message will be sent to the caller and the call will be automatically declined. This feature is available for a one-on-one call or conference invitation sent by a moderator of an ongoing meeting.
# Missed call
If you do not reply to a call or a conference invitation, you will see a notification. In case of a missed call, the notification will include a button opening the chat with the user who made the call. You can also call the user or join the conference by clicking on the corresponding button.
