we want a turn key voip system, voice over long term evolutiont(VoLTE). Below are basic requirements for the project.
1. Install Integrated Multimedia Subsystem (IMS)
2. Connect the IMS to an SIP Express Router. It could be osprey 32 or any other software.
3. Connect the express router to asterisk with SIP registration detail generated from the IMS.
A simple web interface which will hold users contact, like phone number and e-mail, should be created. User can sign up, log in, when they log in they can make calls send SMS, call within users group will be free. Calls and sms outside will be charged at a flat rate which can be adjusted by the admin.
We will appreciated if few code conversion could be made, an android open source to iphone and web based. Thank you happy bidding.