Installation guide

MyPBX U5XX Administrator's Guide
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FXS Extensions
Figure 6-2 FXS Extension List
There are two analog extensions in MyPBX U5XX if S2 module is installed, to
modify the extension number, please delete it first, then recreate it again
1) General
Figure 6-3 Edit FXS Extension
·Extension
The numbered extension, i.e. 1234, that will be associated with this particular
User / Phone.
·Port
The extension correspond port.