I am looking for a highly experienced person and can work fast to customize the opensource linphone android software. If you have many experience with customize SIP Phone like linphone and PBX SIP Server then you are welcome.
1. Apps must be alive as long as device turned on.
2. Everything must be encrypted end to end including voice and videocall
3. App must be redesign including add our logo on splash screen
4. Add self destruct messages feature (secret chat)
5. All Linphone feature must working (voice call/text/picture/file/videocall)
6. The app must be capable to make inbound/outbound call app to app and app to mobile/landline (like skype/viber)
1. You will configure client and server side.
2. We dont have SIP server you have to install SIP Software (like 3cx/freepbx/your preferable) to our windows/linux server (AWS/Google)
3. Server configure must be web interface like 3cx/freepbx and easy to install/move to another server
4. The app must be capable to make inbound/outbound call app to app and app to mobile/landline
5. server able to mask caller id
6. Server can work with Yeastar TG800 GSM Voip Gateway and/or GOIP gateway, SIM Bank/SIM pool 128 GSM Slot (i dont know how sim bank work but they have 32 gsm channel with 128 gsm slot so i expected to have 32 simultanous call and 128 simcard ready to received/make a call, or that what i think, correct me if im wrong)
7. One client have One GSM/Mobile simcard insert to GSM Voip Gateway, so every client use their own GSM/Mobile simcard inserted to GSM VOIP Gateway for incoming/outgoing call/txt message.
8. User able to check balance on simcard or any ussd massage from gsm provider.