development the SIP application with PJSIP sdk

Job ID: 37119420

Budget: $250 – $750 USD

I want to add a VoIP client into our app to make and receive phone calls.
Looking for iOS and Android developer To be able to send and receive SIP calls to our Freeswitch server
I want to use something that doesn’t tie us to a CPAAS platform that requires us to buy phone numbers from them.
Since we have our own VoIP system .So something like pjsip
-No need for registration-
-no need for incoming calls-
i just care about outbound calls for now
Please note about your experience of PJSIP SDK
Related categories: Mobile App Development iPhone Android Asterisk PBX VoIP