New Password ..........................................................................................................94Confirm New Password ............................................................................................944.4.4 Time Adjust Settings ......................................................................................................954.4.4.1 Synchronization ...........................................................................................................95Server Address .........................................................................................................95Synchronization Interval ............................................................................................954.4.4.2 Time Zone ...................................................................................................................95Time Zone .................................................................................................................954.4.4.3 Daylight Saving Time (Summer Time) .........................................................................96Enable DST (Enable Summer Time) ........................................................................96DST Offset (Summer Time Offset) ............................................................................964.4.4.4 Start Day and Time of DST (Start Day and Time of Summer Time) ...........................96Month ........................................................................................................................96Day of Week .............................................................................................................97Time ..........................................................................................................................974.4.4.5 End Day and Time of DST (End Day and Time of Summer Time) ..............................97Month ........................................................................................................................97Day of Week .............................................................................................................98Time ..........................................................................................................................994.4.5 Advanced Settings .........................................................................................................994.4.5.1 Soft Key during IDLE Status ........................................................................................99Soft Key A (Left) ........................................................................................................99Soft Key B (Center) ...................................................................................................99Soft Key C (Right) ...................................................................................................1004.4.5.2 IP Phone ....................................................................................................................100Enable Admin Ability ...............................................................................................100Enable IP Phone Lock ............................................................................................100Password for Unlocking ..........................................................................................1004.5 VoIP ................................................................................................................................1014.5.1 SIP Settings ..................................................................................................................1014.5.1.1 User Agent .................................................................................................................101User Agent ..............................................................................................................1014.5.1.2 NAT Identity ...............................................................................................................102Enable Rport (RFC 3581) .......................................................................................102Enable Port Punching for SIP .................................................................................102Enable Port Punching for RTP ................................................................................1024.5.2 SIP Settings [Line 1] .....................................................................................................1034.5.2.1 Basic ..........................................................................................................................103Phone Number ........................................................................................................103Registrar Server Address ........................................................................................103Registrar Server Port ..............................................................................................104Proxy Server Address .............................................................................................104Proxy Server Port ....................................................................................................104Presence Server Address .......................................................................................104Presence Server Port ..............................................................................................104Outbound Proxy Server Address ............................................................................105Outbound Proxy Server Port ...................................................................................105Service Domain .......................................................................................................105Authentication ID .....................................................................................................105Authentication Password ........................................................................................1054.5.2.2 Advanced ...................................................................................................................106SIP Packet QoS (DSCP) .........................................................................................106Enable DNS SRV lookup ........................................................................................106SRV lookup Prefix for UDP .....................................................................................106SRV lookup Prefix for TCP .....................................................................................1076 Administrator Guide Document Version 2015-02Table of Contents