What are the advantages of 1511CALLBACK service?

ZONE Telecom > Business > 1511CALLBACK
It's a hassle-free way to save on your mobile bills. 1511CALLBACK converts all your outgoing calls to incoming calls. Instead of paying the mobile operators the local outgoing airtime when you are making a local or overseas call, your call will be treated as an incoming call which is free to you when you are on the free incoming call mobile plan.  ZONE1511 will bill you for your 1511CALLBACK usage @ $0.05 per minute instead.