[Programming Example: Internal Call Block]
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
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.
COS 6COS 1COS 2
Extension User
Group 1
Tenant 1
Extn. 100 Extn. 101
Extension User
Group 2
Extn. 103Extn. 102
COS 5
Extension User
Group 5
Tenant 3
Extn. 108 Extn. 109
Extension User
Group 6
Extn. 111Extn. 110
COS 3COS 4
Extension User
Group 3
Tenant 2
Extn. 104 Extn. 105
Extension User
Group 4
Extn. 107Extn. 106
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 trunk groups. By preventing certain COS numbers from
306 Feature Manual Document Version 2008-11
17.1.3 Tenant Service