Asterisk A2billing with VoIP GSM Gateway

The goal is to configure 1 Asterisk server and 1 A2billing

-The Server A (Germany)should take a call from (PMX, Cloud Based SIP Trunking ) and transfer it to VoIP GSM Gateway SIM-Box, 20 Channel having prepaid simcards) in Africa

-the server shoul be in secure from hacker

- The server shall be able to terminate voip calls comming in codecs g729 and g723. Other standards codecs like G722, G726, alow, ulow... shall be supported

- Send ussd and ivr to each sim card to topup and credit check.

- Display how much credit is available in each sim card.

- be able to listen to the channels if they are busy.

- If a channel is busy the call shall try automatically the next channel and so on till it finds a free channel.

- A2billing shall be used to monitor and configure the system

-a Web platform for user to create and topup his credit on A2billing or something else

May be my project is not good structured but I hope you understand what I try to do and besser structure it.

I want that a customer connect on secure website create a account and topup the credit and call.

I did not already buy the GSM gateway may be you can propose me a better solution to achieve my goal.

Tell me how long it will take and how much



Skills: Asterisk PBX, Linux, MySQL, VoIP

See more: asterisk gsm, voip web server, voip for website, asterisk ussd gateway, achieve card, hacker linux, a2billing asterisk, VoIP PBX, ussd, topup, gsm, gsm gateway, free pbx, create voip website, asterisk server, asterisk billing, asterisk and a2billing, account hacker, ussd gateway server, voip web sip, web based ivr system, call transfer project, asterisk send, asterisk monitor call, prepaid sim card

About the Employer:
( 1 review ) Frankfurt, Germany

Project ID: #4939559

11 freelancers are bidding on average $701 for this job


Hi there, I have over 7 years experience working on HTML, Wordpress, Website Design, Logo Design, Joomla, CSS, Linx Administration and a2billing / elastix / freepbx. I have read the project description very well, and i More

$567 USD in 7 days
(234 Reviews)

Hi. I have more than 6 years of experience in this field. Requirements are very clear to me and I can do as you want. Let me know when can we start? Thanks vivek

$555 USD in 3 days
(40 Reviews)

Experienced with asterisk/a2billing setups. Lets discuss and finish this.

$1000 USD in 15 days
(31 Reviews)

i can do this for you

$1500 USD in 3 days
(13 Reviews)

Hello, I am skilled asterisk developer. I can help you with this project. Please contact me via PM.

$555 USD in 20 days
(9 Reviews)

Hi, I can get this done.

$777 USD in 7 days
(6 Reviews)

Over 12 years in GSM termination business, can get this done quick and neat. Looking forward to hear from you!

$555 USD in 3 days
(3 Reviews)

Hello, I am new at freelancer but i have experience with such installations, please see my private mail.

$533 USD in 5 days
(0 Reviews)

I am skilled asterisk developer. I can help you with this project and experience in that area.

$444 USD in 3 days
(0 Reviews)

*************** We have an 8+ years of expertise in Asterisk and A2Billing ************

$666 USD in 10 days
(0 Reviews)

Huge experience on asterisk / a2billing and gateways integration. You may have what you need at the best rate

$555 USD in 3 days
(0 Reviews)