Internal Call Block feature; when an extension user calls an incoming call distribution group, the PBX
checks the COS of the calling extension against the COS of the incoming call distribution group (→
1.1.2.2 Internal Call Block).
Feature Guide References
1.3.1.2 Call Forwarding (FWD)
1.19.2 Flexible Buttons
1.2 Receiving Group Features
Feature Guide
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