I am working with a customer who currently has ~6000 users on a network consisting of a mix of model 30, 70 and 80's using cornet package 9006.6 with Phonemail 6.4.3. The customer is moving ~550 users to two new locations and is looking at what equipment could provide these users with Call processing and voicemail integration to the existing Siemens network. The customer would like calling name and number as well as either voicemail networking or the ability to light MWI between the systems. Has anyone successfully done this with UCM/CXN and the Siemens equipment listed above? If so any details would be greatly appreciated.