Installation guide

MyPBX U5XX Administrator's Guide
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3.3 Security Configuration for remote extensions
If remote registration isn‟t required, please disable it.
PBXExtensionsFXS/VoIP Extensions VoIP ExtensionsGeneralVoIP
Settings
Figure B-9
3.4Set a robust password and enable IP restriction
for extensions
1) Set a new extension password at a higher security level, e.g. AjK5Up1G.
PBXExtensionsFXS/VoIP Extensions VoIP ExtensionsGeneralPassword
Figure B-10
2) Enable IP restriction and enter the permitted “IP address/Subnet mask”, e.g.
192.168.5.136.