We need to develop a SIP to Viber/Whatsapp gateway. The gateway should be able to pass voice calls incoming over SIP and forward them through Viber/whatsapp to complete the call to the called party number. The devolpment should run under GNU/linux (Asterisk,etc). The implementation should return the correct call error codes to the SIP backend, i.e. CALL SUCCESS, BUSY, UNAVAILABLE, etc. For a successful project we'll select the one, triggering successfully continuous SIP/Viber calls.

Functional flow

1) Calls originating will send to Viber/whatsapp gateway

2) Viber/whatsapp gateway converts the sip/iax signal to viber protocol

3) the termination number carried from the origination header will be checked by the Viber gateway , if the number is used by Viber/whatsapp and if the number is online, the call will terminated on Viber/whatsapp!.

4) if the number is not used in VIber/Whatsapp it sends 503 error and rerouted to other gateways .

Skills: Asterisk PBX, VoIP

See more: rtmp sip gateway, h323 sip gateway, addpac sip gateway, asterisk pbx, h323 sip gateway video, h323 gateway sip gateway, sip gateway symbian, sip gateway application windows mobile, freelancer flash sip gateway, cisco h323 sip gateway, addpac 1100f sip gateway, sip gateway openfire ims, flash sip gateway, develop flash sip gateway, connect opensips sip gateway, 2800 cisco sip gateway asterisk

About the Employer:
( 0 reviews ) Argentina

Project ID: #16114142

2 freelancers are bidding on average $653 for this job


Hello, I am Asterisk PBX Expert. I will configure Asterisk to connect to my iPhone VoIP and client. So let's share your requirements in details to move forward. I will add these functions also : 1) Calls or More

$750 USD in 15 days
(0 Reviews)

We are an exceptionally competent team with an average experience of 10+ years in various fields of Information Technology. We had an opportunity to work on some of the rare and highly skilled areas of telecom protocol More

$555 USD in 10 days
(0 Reviews)