The iPhone version of Nimbuzz, a popular IM and VOIP calling app, has added VoX Communications as a SIP/VOIP partner for outgoing calls. Existing VoX customers can download and use Nimbuzz for iPhone as a mobile version of their home account, allowing them to make calls to any phone. VoX will now occupy the second spot on the SIP providers list that users can choose from within the app, behind Nimbuzz's own NimbuzzOut service.
