Specifications

MyPBX U5XX Administrator's Guide
www.yeastar.com Page 41
FXS Extensions
Figure 6-2
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
·Extension
The numbered extension, i.e. 1234, that will be associated with this particular
User / Phone.
·Port
The extension correspond port.