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Soft gsm gateway

Project Description:

I need to use an android cellphone as a channel/Gateway to make phone calls using a PBX through a cellphone running android.

All that is required is that in the end the Android phone will be acting as a SIP or IAX to GSM channel/trunk/FXO and other SIP devices can connect and make phone calls using this.

Basically, this feature would allow Android to act as a SIP "Trunk". Other SIP 'devices' would be able to initiate calls over the GSM connection on the phone, and receive incoming calls from the GSM network. I can see being required is a modification to the code to route the VoIP audio to GSM audio, event handling for incomming GSM calls, and a small extension to the SIP stack.

I want to send voip traffic to the application and it will connect this traffic to the gsm network. In details I will put a gsm sim card in a android telephone, I will install the application, I will link the application to my server, I will send voip calls (in sip protocol) to this application witch will connect the call to the GSM network to reach the destination (in telecom its called to terminate a call). It could be 4g, 3g or wifi not necessarly 4g. Its a kinf of soft gateway, normally this work is done by gateways in witch you will insert sim cards, I want to buil a soft-gateway to have this work done by software directly true the smartphone.

Eargent (Budget 50-100 USD)

Skills: Android, Mobile App Development

See more: android soft gsm gateway, sip-to-gsm gateway for android, connect android to wifi, android gsm to sip, trunk sip, soft, soft phone, sip trunk, link buil, GSM, gsm gateway, audio voip, android voip, android sip, android channel, android gsm voip gateway, gsm code, gsm android sip gateway, pbx software, wifi send receive, pbx server android, pbx gateway android, use sip android, fxo sip trunk, sip server gsm gateway android

About the Employer:
( 0 reviews ) Budapest, Hungary

Project ID: #4731368

2 freelancers are bidding on average $1671 for this job

codeware1

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