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Voip Software Jobs

53 were found based on your criteria

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Hourly - Est. Time: More than 6 months, 10-30 hrs/week - Posted
Develop extensions to Freeswitch and deploy for carrier grade systems. Must have experience with Freeswitch internals and application experience with Asterisk. Must have previous carrier grade deployment experience and understanding of the needs of production... more

Hourly - Est. Time: More than 6 months, 10-30 hrs/week - Posted
Develop integrate Sipwise, Kamailo and Asterisk to implement custom API. Launch to production and maintain. Assist in ongoing support enhancing API. Must have strong carrier grade deployment experience and be able to bring up from source test enhance... more

Hourly - Est. Time: More than 6 months, 10-30 hrs/week - Posted
Install Doubango Telepresence Server and develop custom API, and introduce into production and maintain. Must have strong experience in SIP and WebRTC technologies. Must have proven experience with Doubango Telepresence Server. Skilled at efficient bring... more

Hourly - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
I am looking for someone who could install VoIP solution using OpenSIP or Asterisk over T.38 SIP Trunk with 5-10 DIDs. I would prefer to have a fixed price along with the required time to finish the job. Thanks

Hourly - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
We are looking for c/c++ API accessible from java app through jni. Our application is using javasound lib to get buffer from mic and play buffer to speaker, we are facing echo problems when not using headset. So, we are looking for a echo cancellation... more

Hourly - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
NYC Facilities-based CLEC FreePBX development project needs a number of elements - programming, troubleshooting, documentation, provisioning, more. Some roles ongoing, some as needed. Looking for ongoing and as-need outside support

Fixed-Price - Est. Budget: $ 20 Posted
I am currently using freepbx that rings calls from "prospects" into a SIP client (3cx). My call center pre qualifies the call then transfers to an external line. The recipient of this call requires that the caller ID that is displayed be that of the... more