communication module

1、To develop a instant voice communication module for mobile apps, the sender is IOS or android platform, the receiver is the android platform; 2、The module mainly requires one-on-one voice chat, video chat is not required. 3、The operation need to be simple, click the "call" function button to communication. 4、Due to the two sides of the instant communication may place far away, so the communication must go through the Internet transfer server, the Internet transfer server can use sophisticated third-party software or agreement, but upon the completion of the project it should be delivered to us. 5、The lowest possible sender’s network is ADSL2M. But the delay can not exceed 1 second; 6、The voice quality must be good, don’t have problems like murmur, or echo , the module can be used for commercial behavior。 7、Requires API available for calls, which our company can by calling the method to develop the upper function 8、You need to give us all the source code and demo version (demo version of the platform including android, IOS), and the Internet transfer server which can be delivered to us. 9、Does not need the voice communication software development complete, only need the function module that can transmit voice and broadcast voice. 10、Demo content description: User A click the "call" function button, the Internet transfer server can find user B by a predefined IP and send a call request. When user B accept the invitation, the two sides can begin to talk to each other 11、If you understand our requirements, please let us know your price requirements 12、our budget is USD1000-3000.