Well In BPOs either u r in the voice or non-voice process Jobs. where u communicate with ur client on the phone u r a voice process.
its a Bussiness Process Outsourcing. There is inbound and outbound calls process. Beckend process also in which u need to work on computer. All Voice process jobs require you to be fluent in English. You just have to be very fluent in Communication skill.
What u need to do is just resolving queries of customers who telephone in . A non-voice process is one where the primary job is to perform other tasks such as the processing of papers, emails, reports, etc.