Note• To communicate using a SIP server, "ON"must be selected and "SIP ServerAddress", "SIP Username", and "SIPDomain Name" must be set.• To select "ON", "Gatekeeper" (Page 120)must be set to "OFF"."SIP Server Address": Enter the SIP server’s IPaddress (or host name).Note• If the IP address contains 1 or 2 digitnumbers, enter these numbers as they are.Do not enter like [.001].Example: The IP address is [192.168.0.1].– Correct entry: [192.168.0.1]– Wrong entry: [192.168.000.001]• The DNS server setting is necessary toenter host names (Page 99).• See Page 42 for details about thecharacters that can be input for host names."SIP Username": Enter the SIP user name."SIP Domain Name": Enter the SIP domain name.Note• See Page 42 for details about thecharacters that can be input.• Enter a standards-compliant value. Fordetails, contact your network administrator."Digest Authentication": Use [ ][ ] to selectwhether to enable digest authentication.– "ON": Enables digest authentication.– "OFF" (default): Disables digest authentication."Authentication ID": Enter an authentication ID(1–60 characters [alphanumeric, space, symbols])(Page 141). &, <, >, comma (,), double quotationmark (") cannot be entered."Authentication Password": Enter anauthentication password (0–60 characters[alphanumeric, space, symbols]) (Page 141). &, <,>, comma (,), double quotation mark (") cannot beentered.Note• To communicate using a SIP server, it maybe necessary to set "DigestAuthentication", "Authentication ID",and "Authentication Password". Fordetails, contact your network administrator.• "Authentication ID" and "AuthenticationPassword" can only be set when "DigestAuthentication" is set to "ON".• While being entered, the characters of theauthentication password are displayed, butonce the settings are saved, all thecharacters will be displayed as asterisks (*),and you will no longer be able to check theauthentication password on the screen.Record the authentication passwordbeforehand, and store it in a safe location.• When the authentication password isdisplayed as asterisks (*), pressing [Y]deletes the entire authentication password."SIP Transport Protocol": Press [ENTER] andthen use [ ][ ] to select between protocols(UDP, TCP, Auto (Switch by Site), or Auto (TCP /UDP) [default]) used when communicating via SIP.Note• When Auto (Switch by Site) is selected,TCP will be used if using a SIP server, andUDP will be used if not using a SIP server.When Auto (TCP / UDP) is selected,communication will be attempted in order ofTCP and then UDP. Normally, select Auto(TCP / UDP).3. Press [G].• A dialogue box to confirm the saving of settingsis displayed.4. Use [ ][ ] to select "Yes" and press [ENTER].• The administrator menu screen is displayed.Making H.323 SettingsNote• These settings can only be made when "H.323" is set to "ON" on the call type settingsscreen.• When connecting to an MCU by entering theMCU’s conference room number@IP address,"SIP Server" (Page 118) and "Gatekeeper"must be set to "OFF".• If video conference calls cannot be madebecause there is a problem with the gatekeeperand H.460 server, the H.323 settings areincorrect (on the gatekeeper and the H.460server, or on the unit), etc., "Not registered"will be displayed on the Home screen instead ofthe H.323 extension/H.323 name. In this case,you cannot make calls using either IPDocument Version 2015-03 User Manual 119Contacts and Settings