Calling Cards

Seeing as search isn't active, I can't find out if someone has already asked this. I am trying to set up my phone to use a calling card for calls to other countries. The calling sequence goes something like this:-

18001231234

then a pause

then a pin code followed by a pound e.g.

12341234#

Then a pause and the number to dial followed by a pound:-

011441234123123#

I can't get the iphone to dial if there are two pauses in the number. It works if I enter this as the number

18001231234,12341234#011441234123123

but I need to enter

18001231234,12341234#,011441234123123

a pause after the first pound. If I have that stored in my contact info, it won't even dial the number.

Anyone got it to work with calling cards yet?

Thanks

Mike