Core Issue
7960 SIP IP Phones do not support custom softkeys in which the corporate directory uses. SIP phone s has a limitation of customized layout. For 7940-7960 SCCP phones, softkey s layout of these softkeys can be altered while for 7940/7960 SIP phones, layout of default soffkeys is fixed.
Resolution
You should use a script without customize softkeys . Such kind of scripts will work smoothly across both phones.You need to remove certain tags from the XML file, for example "".
Refer to Cisco IP Phone Services Application Development Notes for Cisco CallManager 3.0 for more information. You can contact Developer Support Central for further assistance.