GlobalRoam has used TelcoBridges' telecom platform as the key building block to enable an innovative application called gCroix, allowing mobile phone users to talk and send SMS text messages to their contacts on Internet who use VoIP and instant messaging clients such as Google Talk, MSN and Yahoo! Messenger.

When communicating with VoIP contacts on the Internet, a mobile user simply registers a contact's userid with the gCroix system to obtain a telephone number associated with that contact. The mobile user then dials the new telephone number to directly reach the VoIP contact on Internet. gCroix bridges voice calls between mobile networks and VoIP providers such as Google Talk, or any other provider registered with the service, anywhere in the world.

When communicating with IM clients, the mobile user sends an SMS text message to the local gCroix system, which relays it to the target IM client via the Internet, anywhere in the world.

Using SMS, mobile users can reach any of their online contacts that use any of the well-known instant messaging services such as MSN, Yahoo! Messenger or Google Talk.

For mobile operators, GlobalRoam's gCroix system allows them to offer an innovative service allowing their subscribers to stay in touch with online friends while increasing ARPU through increased local airtime and SMS usage. For alternate service providers, the system allows them to increase their revenues by extending the availability of their IM/VoIP service to users that are on the road, and would normally be offline.