Guys, do you know the salary of a voice and accent trainer in the BPO industry?

Before becoming a voice and accent trainer, a customer service agent in BPO is usually promoted as a voice coach. My friend in Citibank Call Center (E-Serve) was a voice coach promoted from agent level. Now he is on his way to become voice and accent triner. A voice and accent coach can earn around Rs. 25000 per month. A voice and accent trainer earns up to Rs.35,000 per month. On promotion, the voice and accent trainer can even a figure of about Rs. 40,000.