Installation and updating to the last version according to your licenses that have 

IP OFFICE SETTINGS

- Trunk configuration

- User configurations, extensions

- Plan of marking

- Configuration of trunks (SIP and H323)

- Configuring voice mail

Installing Voicemail Pro

Callcenter Settings:

Support and troubleshooting, for fault correction

Firmware Upgrades

And more, just ask and I'll tell you