Troubleshooting451Phone Book IssuesWhat is the difference between a remote phone book and a local phonebook?A remote phonebook is placed on a server, while a local phonebook is placed on the DECT IPphone flash. A remote phonebook can be used by everyone that can access the server, while alocal phonebook can only be used by a specific phone. A remote phonebook is always used asa central phonebook for a company; each employee can load it to obtain the real-time datafrom the same server.Provisioning IssuesWhat is auto provisioning?Auto provisioning refers to the update of DECT IP phones, including update on configurationparameters, local phonebook, firmware and so on. You can use auto provisioning on a singlephone, but it makes more sense in mass deployment.What is PnP?Plug and Play (PnP) is a method for DECT IP phones to acquire the provisioning server address.With PnP enabled, the DECT IP phone broadcasts the PnP SUBSCRIBE message to obtain aprovisioning server address during startup. Any SIP server recognizing the message willrespond with the preconfigured provisioning server address, so the DECT IP phone will be ableto download the CFG files from the provisioning server. PnP depends on support from a SIPserver.Why doesn’t the DECT IP phone update the configuration?Do one of the following: Ensure that the configuration is set correctly. Reboot the base station. Some configurations require a reboot to take effect. Ensure that the configuration is applicable to the DECT IP phone model. The configuration may depend on support from a server.Password IssuesHow to restore the administrator password?Factory reset can restore the original password. All custom settings will be overwritten afterreset.