Hello,
I am developing a multi-site call center which is necessary for my business communication. I am using this sample
http://www.voip-sip-sdk.com/p_440-vo...nter-voip.html provided by Ozeki VoIP SIP SDK. So my company has a call center for user problems and another one for the sales department. With this SDK you can easily develop a multi-site call center as well.
Regards,
Archy