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Sip Jobs

17 were found based on your criteria

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Hourly - Est. Time: Less than 1 month, 10-30 hrs/week - Posted
Convert existing Dialogic Programs to support SIP interfaces and Dialogic HMP. Base code in C. Open to structure options. Additional work could be available in the future.
Skills: SIP VOIP Software

Hourly - Est. Time: 1 to 3 months, Less than 10 hrs/week - Posted
Hi! I want to build an unlimited outboung calls callback system similar to many websites I have already seen on the web, but improoved. This solution must work for any phone (landline or mobile and not just smartphones), so we can NOT use just... more

Hourly - Est. Time: 1 to 3 months, 30+ hrs/week - Posted
We need a PHP/mysql expert to help us use the source code of an existing PHP application that displays live call status, phone extension status, parked call status etc and change the way the information appears on the screen and also add some new call... more

Hourly - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
We have a existing SIP mobile dialer based upon Linphone for iOS. We are running on version 2.2.4 Sometimes we face issue that we don't receive INVITE signals (for incoming call) on UDP. Due to this app is not able to accept Incoming calls even when app... more

Hourly - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
We are looking for a consultant who can advise us on the best IP Telephony solution for approx 50 users, integrate it with our network, with Goldmine, and Outlook and other apps. Currently our favorite is to use Skype for business. Ideal candidate... more

Hourly - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
Looking for experience in Ruby, Rails, JQuery, .NET, ASP.NET, HTML5, Azure, Heroku, SSH, SIP Communications, VoIP, IP Telephony, PBX, ACD Apply even if you have only a few of these. Nice to have: Experience with Avaya DevConnect & Genesys Possibly... more