Cisco 521SG Administration Guide - Page 302

Cisco SPA IP Phone Field Reference Ext Tab A Parameter CFWD Notifier User ID with Domain (Cisco SPA300 Series) Device Feature Sync Description Typically, this field is configured with the SIP proxy information. When this field is set to yes, the IP phone will show the Caller ID followed by domain name, and the domain name is also shown in the received calls list. This parameter is used when calls are made between different branches of the same phone system. For example, if user [email protected] receives a call from [email protected], by default the phone only shows the call as being from Mary, so John is not able to pick up or call back Mary from the received call list. With this parameter set to yes, the phone logs the call as being from [email protected], and John can dial Mary from the received call list. Set this parameter to yes to enable DND/CFWD synchronization per extension. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 301