OnRelay have a cloud based mobile pbx that is designed for cellular networks. Its core component is OnRelay’s leading and patented MBX mobility server. MCX also embeds a complete open source software IP PBX (sipXecs). MCX works globally utilising existing GSM / 3G voice and data connectivity.
here is a shortlist of some of the many alternatives and replacements that are available for m$ skype
fring + 4 way video over 3G
tango + video over 3G
viber android and ios voip app
android 2.3.4 + built-in – wifi only
sipdroid + works over wifi and 3g
callcentric + free inum
ekiga + free STUN server
euteliavoip + free uk numbers
gradwell + smb & sme focused
ovh + just £1/m uk 01 or 02 number and unlimited uk 01 and 02 calls
sipgate + free uk 01 or 02 number
voipalot + clients for androids, mobiles, symbians and pc clients
voipbuster + clients for mobiles and pcs
voipfone + £1/m for uk 01 or 02 number
ekiga + floss
linphone + floss
twinkle + floss
CounterPath X-lite + mac and pc clients
android 2.3.4 has voip over wi-fi capability built in but if you want voip over 3g then you’ll need to install sipdroid and enable the edge and/or 3g options
see also
euteliavoip settings for android ip phones or ekiga softphones
* Registar Server Address.: sip:voip.eutelia.it
* Realm: voip.eutelia.it
* User Name : EuteliaVoip Telephone Number
* Password: EuteliaVoip Telephone Number Password
* Allow loose routine: Yes/No (Select “No”)
* Ttransport Type: (UDP/TCP) (Select “UDP”)
* Port: 5060 (Port number of EuteliaVoip proxy server)
ovh have launched a £1/month voip sip service in the uk. Unlike the failed tesco voip service you dont have to buy your own ata but just pay a £45 refundable deposit
It turns out that O2 are creating a free-of-charge UK wi-fi network similar to FON and The Cloud
Google Voice is not yet open for users outside the US, but are planning to expand our service to additional countries in the future.
However if you are in the US you can now port you existing mobile number to google: