Mercuro is one of the most 3GPP/IMS compliant softphone on the market. Geared toward IMS and RCS, Mercuro provides a strict standard compliance.

With its support for a wide range of security mecanisms and agreements, Mercuro can use SSL, TLS or IPSec to secure the communications.

Mercuro can store the address book on a XDM server by using the XCAP protocol. It also features advanced properties for rich address book.

Mercuro allows a fine-grained control over the presence publication and notifications, based on the latest IETF and OMA standards.

Mercuro provides a wide range of standard codecs (G.711, iLBC, Speex, H.263), as well as some high-end codecs (AMR NB/WB, H.264).

Mercuro can be used on any IP networks and is IPv6 ready. It features the dynamic discovery of the nework through DHCP and NAPTR.