IBM is the world's largest information technology services and consulting provider. 

IBM has a very large focus on Voice Over IP and specifically  Unified Communications, with project teams worldwide delivering large, complex VoIP projects to large Enterprises and Service Providers. 

IBM has been working with Cisco Voice products for many years and in March of 2007 they both announced a stregthening of the relationship between the two companies for Unified Communications.

IBM Global Services has been the Prime Integrator fr two of the largest Cisco Hosted UCS deployments in both Europe and North America.  IBM sees the Cisco Hosted UCS platform as a key element of its Enterprise Voice strategy moving forward.

IBM also offer a comprehensive outsourcing capability for Managed Voice.