2.2 System Configuration—Software
222 Feature Guide
[Programming Example: Internal Call Block]
In this example:
Internal Call Block is employed to block calls between certain tenants.
Each extension in a tenant is assigned a COS that is not assigned to extensions which belong to
another tenant.
a) Extensions in Tenant 1 are either COS 1 or 2. They can make calls to extensions in Tenants
1, 2, and 3.
b) Extensions in Tenant 2 are either COS 3 or 4. They can make calls to extensions in Tenants
1 and 2, but not 3.
c) Extensions in Tenant 3 are either COS 5 or 6. They can make calls to other extensions in
Tenant 3 only.
3.2. External Call Block
If multiple tenants are using the PBX, the External Call Block feature should be programmed to
control which COS numbers are allowed to access which CO line groups. By preventing certain
Caller
COS 1
COS 2
COS 3
COS 4
COS 5
COS 6
COS 1 COS 2 COS 3 COS 4 COS 5 COS 6
Called Party
Block
Block
Block
Block
Block
Block
Block
Block
Block
Block
Block
Block
COS 6COS 1 COS 2
Extension Group 1
Tenant 1
Extn. 100 Extn. 101
Extension Group 2
Extn. 103Extn. 102
COS 5
Extension Group 5
Tenant 3
Extn. 108 Extn. 109
Extension Group 6
Extn. 111Extn. 110
COS 3 COS 4
Extension Group 3
Tenant 2
Extn. 104 Extn. 105
Extension Group 4
Extn. 107Extn. 106
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