For a simpler method, why not try the Betamax mobile Java client? It works with their retail brands, so would probably be ok with a VT account.

What is it and how it works? From where it can be downloaded? Works for all Nokia mobiles?

Any update on triggering callback without CLI so every call will activate it?

Just tested it.

At inbound routing leave caller id blank
Select callback and fill in the number to callback

Every call no matter what caller id to the did number will trigger the callback.

Ok, I did the first part but cant see the callback area, Where is it? Maybe I dont see it yet as my acocunt is not yet soho? Which number to callback should I use, ie the number where I want to receive all callbacks?

Also I got a free DID from messagenet, now do I need to specify an inbound trunk and route for this, how?

First setup a trunk using the setting, sip seriver username

Also setup a trunk for making calls using voicetrading.
Setup outbound routing using voicetrading, I think I have written it in this thread.

Setup inboucing routing for did trunk and select callback and callback number.

You can also find more info on the pbxes.com forum.

One more question, I think I got all right after your advice. If I use the same voicetrading account for both pbxes for outgoing calls and at home with a IP phone for outgoing calls, is it ok or might have some troubles?
Also how to specify for pbxes that I want to use a normal or premium route for outgoing calls?

read Voipbuster | Go mobile with Voipbuster!

most mobiles, depending on Java version

works for all retail brands, though I don't know for VT - leave the advanced settings at the voipbuster proxy, don't rename

Vopicetrading has no limit, this means you can use 1 account on different ip phones. So using voicetrading you can make several calls at the same time. Voicetrading has been setup for business use and multiple connections at the same time using same account.

normal or premium route.

normal route dail 00 than country code.
premium route dial 00000 than country code.

So when you dial you can just dial 00 or 00000