Cisco UC500 series Configuration Manual page 36

4.3.26 Configuration additional phone features requires the user click on "More" at the
extreme right for a given phone – a pop up window as below will show up where you can
add dialing permissions (COR), CFNA timeout, Hunt Group, Intercom, Paging group etc.
You should also check to make sure the PSTN number field shows the DID you
configured in step 4.3.23 for that extension.
Figure 4.3.26 User parameters continued
Click "OK" to continue configuring each phone.
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