interface as instructed
OldPhone just calls numbers
PhoneLauncher tests phone... Test output->
Starting with OldPhone:

-> Test output for 12 calls

$ java PhoneLauncher
Calling <020 7631 6000>
Calling <+1 202 456 1111>
Calling <020 7631 6800>
Calling <020 7631 6801>
Calling <020 7631 6802>
Calling <020 7631 6803>
Calling <020 7631 6804>
Calling <020 7631 6805>
Calling <020 7631 6806>
Calling <020 7631 6807>
Calling <020 7631 6808>
Calling <020 7631 6809>