"Jono" <jmattwood@gmail.com> wrote in message
news:1170256120.706007.23460@v33g2000cwv.googlegro ups.com...
> If I were you I would seriously consider ditching your 3 number & get
> an O2 number &, if you really need to be with 3, port the O2 number to
> them. That way, any calls from VoIP or PSTN providers would be charged
> as if you've dialled an O2 number, considerably cheaper than calls to
> an original 3 number.
>
> Can't help with the Global Sim, sorry.
>
> I pay around 6ppm to divert calls to my Orange number (terminated
> presently on Vodafone) - I use a [insert provider] number for inbound
> calls to my Asterisk PBX which in turn forwards calls using the
> cheapest provider for calls to mobiles....well, the cheapest I've
> found - voipcheap.com

Thanks for comments

I actually use a trixbox server at home, and my plan had been to do the
divertion at my end with trixbox
but have always found diverting an incoming VOIP call out to Mobile via
another VOIP Provider troublesome, it never works correctly (and I gave up)
I always get no audio both ways on the mobile (but if I call in on 2 VOIP
connections on a conference call hosted by the same server I do get audio.
Like many things to do with trixbox I gave up on it, but will try again on a
latest version