GSMA World Mobile Congress in Barcelona, Spain... Feb 16-19, 2009 is looking really good for business development in telephony related areas. We (I Suzanne Bowen) would like to meet you, so call me during the event at my local Barcelona DID phone number +34931845154 or add me on Twitter as suzannebowen and let me know there you'll be at GMSA.
Anyone can be local during GSMA with a Barcelona phone number.
You can use Fring, Nimbuzz, Truphone, Rebtel* or many others as your SIP agent. If the SIP agent you download does not offer Barcelona DIDs, you may be able to get one from www.virtualphoneline.com (retail, smb, consumer) or www.didx.net (wholesale where there is a minimum of 50 DID to avoid a monthly $50 fee). There are also several 100 more companies out there that offer local international phone numbers!
* I was just talking with Fredrik of Rebtel and have more news for you: "they have local numbers in Barcelona. Sign up and add a secondary phone number to your account. You can register up to 5 numbers to call FROM."
... browse some of our team's other blogs at http://blogs.didx.net and http://blog.tmcnet.com/monetizing-ip-communications/. You're welcome to comment, contribute, and collaborate any time.