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64-7
Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 64 Directory Number Configuration
Directory Number Configuration Settings
Call Forward and Call Pickup Settings
Calling Search Space
Activation Policy
Three possible values exist for this option:
• Use System Default
• With Configured CSS
• With Activating Device/Line CSS
If you select the With Configured CSS option, the Forward All Calling Search Space that is
explicitly configured in the Directory Number Configuration window controls the forward all
activation and call forwarding. If the Forward All Calling Search Space is set to None, no CSS
gets configured for Forward All. A forward all activation attempt to any directory number with
a partition will fail. No change in the Forward All Calling Search Space and Secondary
Calling Search Space for Forward All occurs during the forward all activation.
If you prefer to utilize the combination of the Directory Number Calling Search Space and
Device Calling Search Space without explicitly configuring a Forward All Calling Search
Space, select With Activating Device/Line CSS for the Calling Search Space Activation
Policy. With this option, when Forward All is activated from the phone, the Forward All
Calling Search Space and Secondary Calling Search Space for Forward All automatically gets
populated with the Directory Number Calling Search Space and Device Calling Search Space
for the activating device.
With this configuration (Calling Search Space Activation Policy set to With Activating
Device/Line), if the Forward All Calling Search Space is set to None, when forward all is
activated through the phone, the combination of Directory Number Calling Search Space and
activating Device Calling Search Space gets used to verify the forward all attempt.
If you configure the Calling Search Space Activation Policy to Use System Default, then the
CFA CSS Activation Policy cluster-wide service parameter determines which Forward All
Calling Search space will be used. If the CFA CSS Activation Policy service parameter gets
set to With Configured CSS, then Forward All Calling Search Space and Secondary Calling
Search Space for Forward All will be used for Call Forwarding. If CFA CSS Activation Policy
service parameter gets set to With Activating Device/Line CSS, then Forward All Calling
Search Space and Secondary Calling Search Space for Forward All will be automatically
populated with the Directory Number Calling Search Space and Device Calling Search Space
for the activating device.
Table 64-1 Directory Number Configuration Settings (continued)
Field Description