INSTALLATION INSTRUCTION 19 (50)Prepared (also subject responsible if other) No.Mario PRANZL 6/1537-ASB 150 02 UenApproved Checked Date Rev ReferenceUlf SÖDERMARK 2012-02-16 H4.3 ISDN SIP GW configuration to SIP Operator (Per Gateway)Connect with a web browser to ISDN SIP GW and log in with user name and password. Configurethe following points for the SIP connection to SIP Operator.The following parameters give an overview how a SIP Operator configuration can look like.Adaptations for different providers will be necessary (e.g. Register per Gateway or Endpoint, …).• Go to Configuration (Full) / Network Settings / Application Settings and setDNS Settings: (Network Dependent)Parameter ValueDNS Primary Server IP x.x.x.xDNS Secondary Server IP x.x.x.xSTUN Settings: (Network Dependent)Parameter ValueEnable STUN DisableEnableSTUN Server Primary IP x.x.x.xSTUN Server Secondary IP x.x.x.xSTUN Settings: Is required, if you run ISDN SIG GW behind a NAT router and a publicdynamic IP address is used. The STUN Server should be provided by operator.DHCP Settings: (Network Dependent)Parameter ValueEnable DHCP DisableEnable