McDewey

Description Field Three possible values exist for this option: • Use System Default—The CFA CSS Activation Policy service parameter determines which Forward All Calling Search Space to use for Call Forwarding. If the CFA CSS Activation Policy service parameter is 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. This is the default setting. • With Configured CSS—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 is 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. • With Activating Device/Line CSS—A combination of the Directory Number Calling Search Space and Device Calling Search Space controls the Forward All activation and Call Forwarding without explicitly configuring a Forward All Calling Search Space. 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. If the Forward All Calling Search Space is set to None, and when Forward All is activated through the phone, the combination of Directory Number Calling Search Space and activating Device Calling Search Space controls the Forward All attempt. CFA CSS Activation Policy—Ensure that you configure this service parameter correctly for Forward All to work as intended in the Service Parameter Configuration window. The service parameter includes two possible values: • With Configured CSS—The primary and secondary CFA Calling Search Space controls the Call Forwarding attempt. • With Activating Device/Line CSS—The primary and secondary CFA Calling Search Space is updated with primary Line Calling Search Space and activating Device Calling Search Space. Roaming—When a device is roaming in the same device mobility group, Cisco Unified Communications Manager uses the Device Mobility CSS to reach the local gateway. If a user sets Call Forward All at the phone, the CFA CSS is set to None, and the CFA CSS Activation Policy is set to With Activating Device/Line CSS, then: • The Device CSS and Line CSS is used as the CFA CSS when the device is in its home location. • If the device is roaming within the same device mobility group, the Device Mobility CSS from the Roaming Device Pool and the Line CSS is used as the CFA CSS. • If the device is roaming within a different device mobility group, the Device CSS and Line CSS is used as the CFA CSS. Calling Search Space Activation Policy Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 338 Receiving Calls Call Forwarding Fields