setting up conditional call forwarding
 

Hello,
please forgive me if the question is dumb. I've read the tutorial over and over but I can't figure out whether it is possible to do the thing I want with call forwarding. I must be overtired! Anyone, please help!

Example:
I register with a provider using voxalot (providers list), configure it so that it's "active" and "registered". Let's say the provider is pennytel and my username is 333333. Pennytel also provides me with a DID number, so whoever calls that number from the PSTN network rings my home IP phone (through Voxalot). So far it's all good.

Now, could I set up a call forward so that all incoming calls to 333333@pennytel.com are forwarded to username@voipdiscount.com


in other words, can I get all incoming calls to my DID number provided by Pennytel forwarded to another provider that is neither voxalot nor pennytel?

Thanks for your help,
manny