With an 1-TO-ALL IP Contact Center, the answer is yes.  The same rich set of 1-TO-ALL contact center applications run on IP, and the same redundant architectural options are available, whether the network is IP or TDM.  Prior to deployment, 1-TO-ALL Global Services works with you to ensure your network is ready, and that your reliability and availability requirements are met.  After deployment, 1-TO-ALL provides best-in-breed remote monitoring and self-healing diagnostic support for Communication Manager and 1-TO-ALL Call Center software to provide the same level of reliability you have always depended upon from 1-TO-ALL.