Is there a charge if I get a busy calling code signal?
In principle the value of your calling card should not reduce if you encounter a busy signal.
Prepaid phonecards and monthly billed callingcards often offer really lower long distance rates (2 to 5 times) than the more traditional call services such as coin (landline), cellular (wireless) and collect calling.
Additionally prepaid calling card calling rates remain regular no matter when the call is placed. Even the most expensive pre paid cards have replaced coin pay phones and co-exist with VoIP.