Type Description
DND Tone Indicates the called party has set DND.
PC Programming Manual References
4.10 [2-6-3] Numbering Plan—B/NA DND Call Feature— Alternate Calling - Ring / Voice
6.1 [4-1-1] Wired Extension—Extension Settings
→Main— Extension Number
→Main— Extension Name
→Option 4— Intercom Call by Voice
6.10 [4-2-1] Portable Station—Extension Settings—Main
Extension Number
Extension Name
PT Programming Manual References
[003] Extension Number
[004] Extension Name
Feature Manual References
6.1.3 Flexible Buttons
Operating Manual References
1.2.1 Making Calls
1.3.3 Alternate Calling—Ring/Voice
1.4.3 Directories
3.1.2 Personal Programming
9.1.14 Internal Call Block
Description
Internal calls can be restricted based on the Class of Service (COS) assigned to the caller and to the called
party.

[Programming Example: Internal Call Block]

Caller
COS 1
COS 2
COS 3
COS 1
Block
COS 2
Block
Block
COS...
Block
Block
COS 3
Block
Called Party
Document Version 2008-11 Feature Manual 169
9.1.14 Internal Call Block