Explore Cisco Mobile for Apple iPhone .Also learn to make Apple iPhone apps.
By default, when you install Ubuntu , there is no root user password. You have to manually set one before using root account .You will need to use your own account password (password used while installing Ubuntu) in order to assign password for Root user
This tutorial will help you understand the difference between Cisco Unified Communication Manager Presence and Cisco Unified Presence Server Presence i.e CUCM Presence Vs CUPS Presence
Extension mobility benefits Cisco Unified Users by allowing them to personalize any Cisco IP Phone and log into a phone other than their own and have access to their personal settings.
Beginning with CME 7.1, Cisco has included single number reach (SNR) in IOS Software Releases.It allows users to answer incoming calls on their desktop IP phone or at a remote destination, such as a cell phone,home phone etc. and to pick up in-progress calls on the desktop phone or the remote phone without losing the connection. This allows callers to use a single number to reach the phone user hence named Single Number Reach. Calls that are not answered can be forwarded to voice mail.
Cisco Secure ACS Server Deployment Guide CS-ACS 5.X
Learn to Serve