Bank charges a cable charge of $20 for overseas payment

I wish to make a payment to a bank account in India. DBS Bank said that I have to pay a commission of 1/8% (which is fair) and a cable charge of $20.

I asked - why the cable charge? We are in the world of the Internet now. Is this outdated? Or is the bank just wanted to make extra fee? Is this too much?

I know that most banks probably have a similar charge. I think it is unfair to consumers.