Ali,
For a start you joker, mind your language and remain in limits. You are a shame to the human race, moreso to Pakistan. Blabbering on about your expertise in VoIP and Telco equipment does not prove any point. For startups, I would highly recommend a hosted call center solution until they are large enough to have one inhouse. A call center’s money making portion is telemarketing/inbound support, NOT NETWORK SUPPORT. And unlike your bullshit, I have actually worked for 4 yrs in managerial positions in call centers and represent the largest hosted call center solution provider in the world.
I would strongly suggest to all friends here that weight all your options, consider all posibilities and decide depending on your business model and implementation plan.
Good luck to you all.
Regards
– Harris