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 144) 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 IPaddresses or the gatekeeper and H.460 server.Contact your network administrator.1. Select "H.323 Settings" and press [ENTER].• The H.323 settings screen is displayed.2. Use [ ][ ] to select the following items for input:"Gatekeeper": Use [ ][ ] to select "ON" or"OFF" (default).Note• This setting is available only when "ON" isselected for "H.323" (Page 143) and"OFF" is selected for "SIP Server"."Gatekeeper Address": Enter the gatekeeper’s IPaddress (or host name).Note• If an IPv4 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]• For the input format when an IPv6 addressis used, refer to Page 47.• The DNS server setting is necessary toenter host names (Page 118).• See Page 47 for details about thecharacters that can be input for host names."H.323 Name": Enter the H.323 name."H.323 Extension": Enter the H.323 extension.Note• See Page 47 for details about thecharacters that can be input.• Enter a standards-compliant value. Fordetails, contact your network administrator."Authentication": Use [ ][ ] to select whetherto enable authentication.– "ON": Enables authentication.– "OFF" (default): Disables authentication."Authentication ID": Enter an authentication ID(1–60 characters [alphanumeric, space, symbols])(Page 190). &, <, >, comma (,), double quotationmark (") cannot be entered."Authentication Password": Enter anauthentication password (0–60 characters[alphanumeric, space, symbols]) (Page 190). &, <,>, comma (,), double quotation mark (") cannot beentered.Note• "Authentication ID" and "AuthenticationPassword" can only be set when"Authentication" 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."H.460": Use [ ][ ] to select "ON" or"OFF" (default).Document Version 2018-01 User Manual 145Contacts and Settings