Please visit the following sites which give useful information about BPO

Call Center Phone Answering Services
Answercustomer - Offers call center solutions such as order taking, answering services, messaging services ,medical answering service.

Bpo company india, Business Process Outsourcing Services, Inbound Call Center India, Outbound Call Center India
Ennovate Group Inc. provides an exclusive range of services from customer relationship management, back office transaction processing to industry specific solutions.