Installation guide
MyPBX  U5XX  Administrator's  Guide 
www.yeastar.comPage32 
We can reset or reboot MyPBX U5XX via web directly in this page. 
Figure 5-19 Reset and Reboot Options 
·Reboot System 
Warning: Rebooting the system will terminate all active calls! 
·Reset to Factory Defaults 
Warning: A factory reset will erase all configuration data on the system.   
Please do not turn off the system until the RUN light begins blinking. Any power 
interruption during this time could cause damage to the system. 
5.3.6 Hot Standby 
Redundancy is achieved by using duplicate hardware and software installations 
and  synchronizing  data  and  operating  state.  Redundancy  assures  smooth 
operation even if a system goes down. Essentially a duplicate backup system 
takes  over  with  virtually  no  loss  of  service.  This  technique  assures  absolute 
reliability no matter  what failure  occurs. In  mission  critical  installations, 
redundancy is a way to address possibility of any failure. 
Note 1: Before enabling the Hot Standby feature, please make sure that the 
two servers in the failover pair are the same model, own the same modules 
installed  in  the  same  slots,  the  same  hardware  configurations  and  firmware 
version. 
Note 2: Please configure the primary server first and configure the secondary 
server only after the running status of primary server becomes “active”. 
Note 3: The virtual IP address inputted in this page will be the one used for 
registering in each IP phone. 
Note 4: Before  configuring  the Email list in this page,  please  configure 
the “voicemail settings” in “PBXBasic settings”, and make sure the SMTP test 
successfully. 
Note 5:  Before configure the SMS list; please make sure the SIM and 
GSM/UMTS modules are installed well 










