Sip to GSM


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.

Skills: Android, Asterisk PBX, Mobile Phone, VoIP

See more: gsm sip, gsm pbx software android, sip-to-gsm gateway for android, connect android to wifi, android gsm to sip, trunk sip, soft phone, sip trunk, sip server, sip calls, 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

Project ID: #4189826

8 freelancers are bidding on average $871 for this job


Dear sir After reading your project Sip to GSM details,we are interested in this project and would like to bid on this project. we take care of our every client personally and has always long term relationship.we will More

$720 USD in 20 days
(4 Reviews)

Hello Please see private message. Regards

$750 USD in 20 days
(9 Reviews)

We can do it...

$3000 USD in 30 days
(13 Reviews)

consider it done.!!! check pm.

$250 USD in 9 days
(5 Reviews)

Atto communication pvt ltd based out in Bangalore, India. We started in 2011 with team of people who have rich experience Marketing , Software development and Testing in field of Networking and Wireless More

$600 USD in 15 days
(0 Reviews)

Hello, Please read PMB. regards S

$850 USD in 35 days
(0 Reviews)

We have expereince team in your project andd we can complete your project as you describe. Please dont forget to check your private messages. Thanks

$250 USD in 5 days
(2 Reviews)

We are very much interested can do this projeoct. Please check PMB

$700 USD in 18 days
(0 Reviews)

Hi, We have done smiler analysis & we want detail discussion regarding features and feasibility for such app. Thank you for your consideration. I look forward to hearing from you..

$1000 USD in 20 days
(0 Reviews)

I have a few queries, Please check ur PM.. Regards, Umesh

$600 USD in 30 days
(0 Reviews)