SIP Jobs

70 were found based on your criteria

  • Hourly – Less than 1 week – Less than 10 hrs/week – Posted
    Google Voice announced they wouldn't work with ObiHai VOIP adapters after May 15, 2014. I have multiple ObiHai 202 adapters that ring at multiple locations. I've subscribed to as the service provider as a test but can't figure out how to program the adapters. I also want to know if I should buy a inhouse VOIP PBX such as the "Yeastar YST-U100 MyPBX IP PBX" to allow more than two analog phones at the main ...
  • Hourly – Less than 1 month – 10-30 hrs/week – Posted
    We are looking for an EXPERT Linux / VoIP Systems Architect who is able to perform an integration for us using either Kamailio or OpenSIPS into our billing system Jerasoft VCS. The objective of this installation is to gain high CPS for enterprise / call center VoIP Traffic. We have researched and found that the easiest integration would be using common radius collectors for either OpenSIPS or Kamailio. More information about the common radius collectors is available at: ...
  • Hourly – Less than 1 week – Less than 10 hrs/week – Posted
    We are looking for freelancers to our team to do further develop of existing Kamailio setups with new features special for the needs we have like smsc ect. Please contact me and tell a little about yourself and your practical knowledge and experience with Kamailio. There will be ongoing tasks for the right person and the opportunity to become a permanent part of our international network.
  • Fixed-Price – Est. Budget: $50.00 Posted
    I am running a SIP service. I am Kamailio. Server is CentOS I want to record the audio calls. I think this could be the way. I want someone who can enable this for me. I will provide access to browser SSH via TV. Please quote.
  • Hourly – 3 to 6 months – 10-30 hrs/week – Posted
    Concept Overview: The project is a production version of a white labeled java SIP based VOIP application. Developer Requirements: -- Good English Skills -- Ability to read software specifications (English) -- Can communicate with project manager on text chat during the US Business -- -- Hours (5am – 3pm EST – New York City Timezone) -- Experience in creating java desktop applications -- Experience working on a team. -- Experience with java awt or swing. -- Experience using Git. -- Must be able to write clear, commented, well-structured code -- Must be detail ...
  • Hourly – Less than 1 week – Less than 10 hrs/week – Posted
    I am in urgent need of an experienced network / voip engineer with knowledge of pfsense to help me fix an issue whereby calls are dropped after 30 seconds. Network layout is: I have two softphone SIP clients (linphone) sitting behind our firewall / NAT (pfsense) and they need to connect to an external SIP server using an allworx system. I do not have control of the allworx system. I have set static outbound NAT for all UDP ports and tried a ...
  • Hourly – Less than 1 month – 30+ hrs/week – Posted
    We are looking to develop our own softphone for voip calling (SIP dialer.) The application will provide free calling between users of our software. The application will provide low cost long distance. We will provide the users with 30 free minutes of local / long distance calling per month. We have an asterisk server with A2billing already configured for a calling card service and this application will be an extension of that service. Phase I apps will include the following: - outbound ...
  • Fixed-Price – Est. Budget: $1,000.00 Posted
    Telephone Voice PBX Server We need a SIP/PBX/VoIP expert that can build a Voice Server similar to We want to use our current telephone lines and bridge them over to the VOIP/SIP server. The server will automate the answering of the phone. The server must capture the incoming number. The captured incoming telephone number will be POSTed to our data server which will return a listing of locations (PBX Automatic Attendant or IVR ...
  • Hourly – 1 to 3 months – 30+ hrs/week – Posted
    Use twilio to implement the option for a user to dial a number from our website. the dial pad must be located to the left side of their account. Must be in html5.