Scope:This document will help you filtering registration logs (Active registered SIP users, Failed registrations and State changes) using VoIPMonitor.Requirements:Access to VoIPMonitor with permission to see SIP Register.Viewing Registration LogsClick on SIP Register.The SIP Register section has three tables - Active registered SIP users, Failed registrations, and State changes in SIP registrations. Active Table: shows current registered usersFailed Table: If some device fails to register continuously the counter column increases instead of creating a new row. If there is a one-hour gap between two failed registrations from the same user a new row will be created.State Table: In each state row you can click on detail [+] to show all related SIP register messages to the selected user. If the device registers in regular intervals it will not save state change in the state table but keeps the last registration status until the re-registration stops - then UNREGISTER will be the last register state change. If the device does not resend registration in time (register expires + 5 seconds) the last state will be EXPIRE (with red flag).The fields for each table are the following:ID/sensor id shows internal unique ID and if enabled sensor iddatetime is time creationUser name / realm shows username and realm from REGISTER messageSource IP / Destination IPFrom / To / Contact are values from SIP headersExpires at shows date when the registration expiresUser-agent - Phone ModelCommands - download PCAPFilteringOnce on a table, click on Filter Form,Enter the Public IP of the site you are troubleshootingClick SearchIt will now show you logs only from the IP you set.