User's Manual
Firmware Version 1.0.0.5 
UCM6510 IP PBX User Manual 
Page 43 of 192 
time accordingly. 
If "Self-Defined Tome Zone" is selected, please specify the time zone 
parameters  in  "Self-Defined  Time  Zone"  field  as  described  in  below 
option. 
Self-Defined Time Zone 
If "Self-Defined Time Zone" is selected in "Time Zone" option, users will 
need define their own time zone following the format below. 
The syntax is: std offset dst [offset], start [/time], end [/time]   
Default is set to: MTZ+6MDT+5,M4.1.0,M11.1.0 
MTZ+6MDT+5 
This indicates a time zone with 6 hours offset and 1 hour ahead for DST, 
which is U.S central time. If it is positive (+), the local time zone is west 
of the Prime Meridian (A.K.A: International or Greenwich Meridian); If it 
is negative (-), the local time zone is east.   
M4.1.0,M11.1.0   
The 1st number indicates Month: 1, 2, 3..., 12 (for Jan, Feb, .., Dec). 
The 2nd number indicates the nth iteration of the weekday: (1st Sunday,   
3rd Tuesday…). Normally 1, 2, 3, 4 are used. If 5 is used, it means the 
last iteration of the weekday. 
The  3rd  number  indicates  weekday:  0,1,2,..,6  (  for  Sun,  Mon,   
Tues, ... ,Sat). 
Therefore, this example is the DST which starts from the First Sunday of   
April to the 1st Sunday of November. 
To  manually  set  the  time  on  the  UCM6510,  go  to  web  GUI->Settings->Time  Settings->Set  Time 
Manually. The format is YYYY-MM-DD HH:MI:SS. 
Figure 15: Set Time Manually 










