There are many different processors to support customer needs:
-S8300D, small processor that goes inside a G450 or G430 gateway. When paired with a G450, up to 450 users are supported. When paired with a G430, up to 150 users are supported. The S8300D also support Communication Manager Messaging installed on the same processor.
-DL360 Simplex, single server that supports up to 2400 users. Also supports an installation of Communication Manager Messaging
-DL360 Duplex, up to 36,000 endpoints. While this does not support an installation of Communication Manager Messaging, it does support Shadow Memory Duplication for survivability.
-Midsize Enterprise Server, based on a modified DL360. This supports up to 2000 users, and a large number of virtualized servers, including Communication Manager Messaging, Session Manager, System Manager, etc.