We need asterisk technical people that can make process for detecting answering machine and leaving a message on the answering during a call. Calling is already working on our system but we need to add the answering machine part and it must detect if it's not human and leave a different message.
Only experienced asterisk professionals with knowledge and previous implementation of detection systems should bid.
8 freelancer bu iş için ortalamada 214$ teklif veriyor
You can use spandsp module for this purpose. This module has an ability for detecting human or machine voice. And for leaving message, we can set on the dial-plan.