Microsoft® Office Communications Server 2007 R2 Resource Kit

Determining Interoperational Requirements

There are few environments, especially at an Enterprise scale, that do not have a multitude of vendors supplying solutions. And, quite often, these solutions may not work together, or inter-operate, without either vendors working on the issue or the team finding a third-party solution. Figure 14-6 depicts the current telephony infrastructure in the Chicago site at Litware, Inc.

Figure 14-6. Current PBX telephony system at Litware, Inc.’s Chicago location

Consultation with the PBX vendor may prove that the Office Communications Server can be configured to communicate directly with the PBX by using direct SIP, ...