The capacity of the Unified Communications Module is:

Number of Modules
Maximum one module per system.

Trunk Cards:
The module does not support a trunk daughter card.

IP Office Users:

Up to 200 users when running Voicemail Pro and one-X Portal for IP Office.

More than 200 users when running just Voicemail Pro.

Simultaneous one-X Portal for IP Office Users: 50.

Maximum voicemail ports: For systems running in IP Office Subscription mode, the module provides the ports as listed below. For other modes, the module provides 4 ports as standard but can be licensed for additional ports up to the limits below.

Up to 20 ports when running Voicemail Pro and one-X Portal for IP Office.

Up to 40 ports when running just Voicemail Pro.

Voicemail storage capacity:

Up to 800 hours storage for messages, prompts and announcements.

An additional limit of 60 minutes applies for any individual mailbox.

Small Community Network Support: Maximum 6 systems.