Hullo might just cause a hullabaloo, seeing as it pretty much amounts to free VoIP calling, for now, but there will be paid services later (smart move). One difference between it and Jajah is that you can call from a telephone (PSTN or mobile) or from your computer (as with Skype). With Jajah, you can only call from your phone. Hullo also lets you transfer calls, as well as allow new people to a conversation (provided you initiated the main call). Sounds pretty innovative. You can read more at Saunders.LOG.
I downloaded and installed Hullo, but only tried the pc2phone feature. First, I called my father and got his voicemail - very clear. Then I called myself on my cellphone - also very clear quality, but I'm getting weird audio cancelling, probably due to using speakers on the desktop computer and an ear plug for the mobile phone. Try it for yourself. You can make conference calls by selecting more than one profile in your contact list.
By the way, you get two phone numbers when you register: a Hullo number and a Call-in number. I tried calling the Call-In number from my cell, got a recorded message asking for my extension, but found no clear explanation of what that might be, not even in the FAQ. Then again, it's only in beta, so I fired off an email to the support team. (I also tried calling the Call-In number from Skype using SkypeOut, but this time, the call was not answered.)
But I'm overwhelmingly impressed. Skype better watch out, especially if Hullo starts getting plugins. Better get all your free calling in now, on Hullo, before they change the pricing structure.
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