Need a small tray tool which does two things;
1: Acts as a SIP/RTP proxy for softphone on the same laptop/PC
2: Connects via VPN to OpenVPN server for SIP/RTP services
This would be for both Linux and Windows, MAX would be a bonus but not required.
User would enter username/password into SIP softphone but point to local SIP proxy for services.
The small application would be pre-configured to connect to PBX via OpenVPN server to establish connection for SIP/RTP services, thus bypassing firewall problems for remote/mobile users.
NOTICE: IF you contact and bid, PLEASE explain what you are offering or if you require more information.
Note: VPN should only tunnel SIP/RTP (5060 TCP/UDP and 10000-20000) ports only so that user can use VPN for other things if needed)