BPO ~ Sales Appointment Scheduling referral

BPO ~ Sales Appointment Scheduling referral

I'm looking to outsource our company's sales appointment setting practice i.e., BPO Sales Appointment Scheduling. We'll supply the leads, just need someone to give them a call, qualify them, and schedule, change, or cancel sales appointment. Ideally, they integrate with our Zoho CRM. Any suggestions for such companies that can work for small business like us?  I'm open to outsourcing oversea. Thank-you in advance.
 
Regards,
Tony
 
Tony the Computer Guy, Inc.