SIP Federation

SIP federations allow internal users to send chats and view the presence information of external users.
A detailed description of the federation can be found on the page Introduction to federation.

Use federation

To activate federation, different configuration possibilities can be selected.

• Direct (Open Federation)
  The connection with servers in other presence domains is carried out directly from this server. The connections to other presence domains are established via standard SIP protocols. The servers are automatically located via special DNS service location records, so no other configuration is necessary.

• SIP Proxy
  Select this configuration, if all connections with other servers will established through SIP proxy services. SIP is a proxy server, which provides a secure gateway for bi-directional communication between your company's data transfer systems and external business partner's systems. Simply click on the corresponding "Configure..." button to configure your SIP proxy server. A new window will appear, which allows SIP Proxy Settings to be made.

• Message Window
  This window shows status reports and additional information about your selected configuration. Every entry has a time stamp - format: (date time) at the beginning of a line. The time stamp informs on when the notification has arrived. Only the last 30 entries are shown.

Configuration of open federation

For using open federation it is required to have a valid server certificate, a public DNS-SRV record and a network interface for incoming connections. Please find more information regarding certificates at server certificates. Further information regarding DNS-SRV records can be found at 'Setting up DNS Service Resource Records for federation'.

• Certificate
  For using open federation a valid server certificate is required. The certificate must be signed by a Certificate Authority (CA) and it need to be installed on the system. Please press the button Certificate to open the dialog. Select the signed certificate and press the button 'OK'.

• A DNS-SRV record of a public DNS corrosponding with the certificate
  Depending on the selected server certificate an IP address and port number is detected by a DNS request. If nothing is displayed after selecting the certificate the DNS-SRV record may not match the certificate or it may not be present.

  • DNS host IP
    Returned IP address of the DNS request using a Certificate Subject Name.
  • DNS port
    Returned port number of the DNS request using a Certificate Subject Name.

• Network interface for incoming connections
  Please select a network interface to be used with incoming connections of open federation. By finishing the configuration the network interface is added automatically to the network interfaces for incoming connections.

  • Bind to IP address
    Please select the network interface to be used for open federation.
  • Port
    Please enter the port number to be used for open federation.

To accept the new settings please press the button "OK". Press the button "Cancel" to discard the settings.

Configure SIP Proxy Server

When logging into the SIP proxy server, you will enter your user name and password to identify yourself to the system, as well as other information necessary for the connection with the proxy server. Proceed as follows to set the necessary settings in the corresponding configuration dialog to configure your SIP proxy service.

• Login and interfaces

  • Benutzername
    Enter your unique user name as required for logging on to the SIP proxy server.
  • Password
    The password is necessary to be able to login with your user name later to the system. Unlike the user name, it's recommended to use a password which has nothing to do with yourself.
  • Netzwerkschnittstelle
    Select the network interface to be used for the connection towards the SIP Proxy.

• Verbindung zum SIP Proxy

  • IP Address
    Enter your SIP proxy server's IP address. This address is unique in your local network. If the correct IP address is not entered, the connection attempt will generate an error.
  • Port number
    Enter the port number of your SIP proxy server. The port number corresponds to the number entered in the SIP proxy server settings. If the correct port number is not entered, the connection attempt will generate an error.
  • Transport Protocol
    Set the server transport protocol, which will be used by your SIP proxy server. The following possibilities are available:
    - TCP (Transmission Control Protocol)
    - TLS (Transport Layer Security)
    - MTLS (Mutual Transport Layer Security)
    
    You will need a server certificate associated with your SIP proxy server to use the MTLS protocol. Certificate information can be entered in the SIP server settings dialog.

• Network interface for incoming connections from the SIP Proxy
  Select the network interface to be used for incoming connections from the SIP Proxy. The selected network interface is automatically added to the list of network interfaces for incoming connections.
  
  • IP interface
    Select the network interface to be used for connections the SIP Proxy has to establish to the UCServer.
  • Port
    Please specify the port number to be used for establishing the connection between the UCServer and the SIP Proxy.

Click on the OK button to confirm your settings. Click the Cancel button to reject your entries. If the system should reject the SIP proxy login, you should first check for a typing mistake. Then, open the configuration dialog and try to login again.