One of the main functionalities that the VoIP@RCTS service allows is Mobility, that is, the possibility of the extension of each user to accompany him everywhere as long as he has access to a network point.

Voice mail also gains a new dimension, being possible to integrate it with electronic mail. Thus, any message that arrives to the voice mail, may also arrive simultaneously to the electronic mailbox.

Authorisation levels for outgoing calls can now be set per user according to their needs.

The creation of virtual rooms for conferences is another feature of the system. By disclosing the room to other participants, there is the possibility for anyone to be part of that virtual room for audio conferences.

Of course, all the services that exist in the traditional telephone system are also available, such as extension blocking, call transfer, among other features.