Updated: July 11, 2020 (August 13, 2007)
Charts & IllustrationsCommunications Server 2007 Licenses
The six different server licenses and client access licenses (CALs) available for Communications Server 2007 are outlined below.
| License | Price1 | Description |
| Standard Edition Server License | US$699 | Provides the right to run a single instance of Communications Server 2007 on a server. |
| Enterprise Edition Server License | US$3,999 | Provides improved scalability and availability; required only for Communications Server 2007 machines deployed as Front-End servers pooled together in a load-balanced cluster. |
| Standard CAL2 | US$31 | Provides the right to use Communications Server 2007’s presence and IM functions as well as a restricted set of voice and video calling capabilities. Can be used with either edition of the server. |
| Enterprise CAL2 | US$139 | Adds the right to use all Communications Server 2007 features not covered by the Standard CAL, including voice and video calling and PBX integration capabilities, as well as on-premise Web |
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