DID Management & IP Telephony based on Asterisk

Hi there. Basically we are looking for DID management system and IP telephony platform based on Asterisk real-time with all the options of billing and features such as IVR, Voicemail , etc . There should be web interface for admin/user/reseller . Our purpose is to sell DIDs of almost 40 countries to our resellers and retail users. Also the ability for our users to make outgoing calls using our A to Z list or ability to make calls to another SIP/IAX users . We are looking for a user friendly interface all the users and a default website . Private labelling for resellers. Anybody with good knowledge of Asterisk and PHP should not have any issues. I have mentioned some of the requirements: Customer Side. 1. Ability for customer to sign up and login into their Account 2. Ability for customer go to their account and manager their DIDs , see their CDRs . request DIDs by country, cities, , block DIDs , forward DIDs, etc 3. Ability for customer to pay online using paypal / credit card 4. Automatic emailing to customers when one of their DID is expiring . balance reaches certain limit. 5. All the uploaded DIDs not sold should be available should be posted on the website under country & city for the custmer to select and purchase them. Routing : [login to view URL] to register IP devices to asterisk to receive and send calls from an IP Device. Outgoing calls should have IVR with the usual IVR function. 2. Ability for our users to call themselves using their username for free or ability to charge monthly/per day or per minute day. [login to view URL] to forward calls to a GWs & PSTN/Mobile number. [login to view URL] for DIDs of multiple countries. [login to view URL] to see ongoing calls. Billing [login to view URL] to add Flat billing per month for each DIDs or batch of DIDs. [login to view URL] to add per min charges for incoming and outgoing calls with CDRs [login to view URL] should be able to provide online balance remaining of the customer. [login to view URL] to assign rate tables for the customer [login to view URL] emailing to customers when their balance reaches certain limit [login to view URL] of DID if payment is not received . Reseller [login to view URL] to add a reseller to have his own interface to sell / manage DIDs Admin Panel 1.A control Panel to manage the customers .which includes [login to view URL] Credit to them [login to view URL] list of customer with numbers [login to view URL] a Customer [login to view URL] to upload DIDs . [login to view URL] to see the calls in progress . [login to view URL] to activate / deactive a DID or DIDs. [login to view URL] to add a country and than upload DIDs / Assign DIDs. 9 Ability to add CLI restriction. regards, alamzaib