Dennis Hartmann

Josh Finke, CCIE No. 25707, is the practice director for collaboration and networking at Iron Bow Technologies, a Cisco Gold and Master Unified Communications Partner. Josh was previously a lead instructor and director of operations for Internetwork Expert, a leading CCIE training company. Josh has multiple certifications, including the Cisco CCIE Voice, CCNP, CCDP, CCNA, CCDA, and Cisco Meeting Place Specialist. Josh specializes in Cisco UC, routing and switching, and enterprise network design. Josh started working with Cisco networking technologies in 2000 and later became one of the youngest Voice CCIEs in the world. He lives with his wife in Seattle, Washington.


Dennis J. Hartmann, CCIE No. 15651, is a Unified Communications consultant. Dennis is also a lead instructor at Global Knowledge. Dennis was first exposed to CallManager during the CallManager 2.0 time frame when Cisco acquired Selsius. Dennis has various certifications, including the Cisco CCVP, CCSI, CCNP, CCIP, and the Microsoft MCSE. Dennis has worked for various Fortune 500 companies, including AT&T, Sprint, Merrill Lynch, KPMG, and Cabletron Systems. Dennis lives with his wife and children in Hopewell Junction, New York.