Voip System

We need a complete voip system.

- will work on all major platforms.

- windows softphone

- cross-platformbrowser webphone

- Android Softphone (branded)

- IPhone Softphone

- Symbian dialer presales Any third party voip endpoint

- Voip tunnel clients for third party softphones and devices

- Voip clients size select features

- Sip protocol stack and related protocols

- H323 protocol stack (gateway and keeper)

- Class4 features (transit, routing, billing, LCR, BRS, load balancing, failovering)

- Class5 features (PBX features, ACD, call forward, transfer, DID, etc)

- Codec support: all ([url removed, login to view], [url removed, login to view], [url removed, login to view], [url removed, login to view], G726, GSM, speex, iLBC, wideband, ultra-wideband, H264, DTMF, etc)

- Video, Presence, IM support (SIP SIMPLE) IVR Basic calling cards (requires IVR basic)

- P2P, callback (requires IVR basic)

- IVR Advanced

- SMS out

- SMS in

- Enduser webportal

- Resellers

- Callshops Tunneling and encryption

- Recharge, Paypal, pincodes

- Payment Gateways

- GeoIP (for location based services)

- Dynamic-automatic firewalling, DOS attack protection, account limits, blacklists, account lockdown

- Codec conversion

- Outbound callcenter

- Predictive dialer

- VoIP Tester (stresstest / callgenerator)


- Voice Recording

- Base Service Module Complete website

- Capacity

- Extra payment support modules and features

Skills: Engineering, Project Management, Software Architecture, Website Management

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About the Employer:
( 0 reviews ) ISTANBUL, Turkey

Project ID: #3989182

7 freelancers are bidding on average $9071 for this job


VoIP EXPERT ! Please check details.

$5000 USD in 15 days
(67 Reviews)

We can do this job. As we've worked with basic model of your requirements. please refer pmb for portfolio links. Looking forward to serve you. thanks and regards Raj

$19500 USD in 181 days
(9 Reviews)

Hi, Please check your PMB for more details. Regards, Volansys

$5000 USD in 45 days
(1 Review)

Hi there...pls check PMB.

$5000 USD in 30 days
(2 Reviews)

We have completed large scale mobile applications for IOS, ANDRIOD AND BB so would like to take this project, please check private message for some examples for your satisfaction and decide the best team accordingly. T More

$12000 USD in 75 days
(2 Reviews)

we can provide this system for you include the setup, installation and running with test and verification of performance

$9500 USD in 90 days
(0 Reviews)

Hi, We are one of the best developer on freelancer. We can provide you a excellent solution as we are professional and experience. Read my PM for your ultimate solution. Have a nice day. Vebs

$7500 USD in 35 days
(1 Review)