The software to be cloned (available from [url removed, login to view]) does 90% of what I require. The essential function performed by the above referenced software is to employ credentials from an existing SIP account and activate a valid USA DID number that corresponds to the SIP credentials. The 'softphone' should answer the number and present callers with a spoken dialog of options. This 'softphone' will never be used as a dialer so interface needs are very simple.
Further details can be obtained by responding to this project and including the phrase VOIP SOFTPHONE.
5 freelancer bu iş için ortalamada 610$ teklif veriyor
we have develop a similar softphone ntphone you can download it from [url removed, login to view](it's chinese version) It support call in/out,recording and auto answer etc.