ASTERISK / VOIP EXPERT NEEDED

We are looking for an Asterisk/VOIP Expert for an advanced voip service platform that offers mainly voice + added-value services. Main workflow as follows : Users register on ecommerce site Get a phone extension (ex 123) and list of local numbers see example in ring2skype User Phone extension is valid on a number of local DID numbers in various countries (xxxxxxxx-123) Advanced user panel to manage voice mail and services (using a map interface) User can set rules and IVR for each local extension in specific language (example french language IVR for france number) User panel offers advanced services to be paid for with prepaid credit system (example : local support or manual voice to text transcription/translation) We only would consider working with experts with proven record/demos. Please serious bidders only with good knowledge of Asterisk A2billing, etc. If no or limited experience in Asterisk please DO NOT BID To avoid Spam Please start your message with VOIP Full details in PM Please submit reference We need overall analysis first before development to validate technology and requirements