Hi Masud,
Ujjal is alredy in touch with me through email.
Any way we are in the business of consultancy for call centers in India, as i’am not much aware of the infrastucture available at Dhaka threfore i’am not in the position of commenting on it but as u said that you have tested voice connectivity and it is good but do you think it could be 100% reliable and will not snap up during operations? by the way did u use satellite connectivity or leased line? We can provide you with solutions such as the proper usage of connectivity ot the type of connection that u could use and the equipments that you would require, sourcing them for you, providing you a team of technical experts on retainership basis, etc.
Amit