Phone Card/Calling Card/Least Cost Routing app for N900???
 

SIP Client is great but some people prefer to use things like:

- Dial through using a Calling Card
- Callback service from VSP
- SMS callback service from VSP

How is the possibility to transparently support all of the above looking for N900 (via separate app or built-in)?

DialCentral is a different thing.
PhoneLink is closer but still not it.