Labels:text | screenshot | yellow | rectangle | parallel OCR: Exchange server sermer seper 10 More/ sec Stand ethe net ole?'s Unified Messaging. Leatherman Tool Group's objective is unified messaging at the Application layer, and not a datacom/telecom infrastructure merger. The only point where the Category 5 data cabling and Category 3 telephone wiring meet is where the voice mail server from Applied Voice Technology (Kirkland, WA) passes voice mail messages across to the Microsoft Exchange server.