Making/Answering Calls, IntercomProblem Cause/SolutionThe unit does not ring. • Check the VoIP status in the Web user interface andconfirm that each line is registered properly (® see Tocheck the setting status in the Web user interface inthis section).• Check that the SIP server address, URLs of theconfiguration files, encryption key, and other requiredsettings are correct.• Check the firewall and port forwarding settings on therouter.• Check [Call Control] for each line in the [Telephone] tabin the Web user interface.– If [Enable Do Not Disturb] is set to [Yes], the unitdoes not receive calls (® see 4.6.2.1 Call Features).– If [Enable Call Forwarding No Answer] is set to[Yes], the unit does not receive calls (® see4.6.2.1 Call Features).– If [Enable Block Anonymous Call] is set to [Yes], theunit does not receive anonymous calls (® see4.6.2.1 Call Features).• Check that [Enable Do Not Disturb], [Enable CallForwarding No Answer], and [Enable BlockAnonymous Call] are not controlled by your phonesystem.• For details about settings, consult your networkadministrator or phone system dealer.I cannot make a call. • Check the VoIP status in the Web user interface andconfirm that each line is registered properly (® see Tocheck the setting status in the Web user interface inthis section).• Check that the SIP server address, URLs of theconfiguration files, encryption key, and other requiredsettings are correct.• Check the firewall and port forwarding settings on therouter.• For details about settings, consult your networkadministrator or phone system dealer.Password for Web User Interface ProgrammingProblem Cause/SolutionI have lost the login password of the Webuser interface for the Administrator or Useraccount.• Consult your network administrator or phone systemdealer.For security reasons, it is recommended that thepasswords are set again immediately (® see 4.4.3 AdminPassword Settings or 4.4.2 User Password Settings).Document Version 2015-07 Administrator Guide 3398.1 Troubleshooting