SIP (Session Initiation Protocol) is an important industry standard protocol that is widely used for establishing, modifying and terminating multimedia sessions or voice and video calls across IP networks. It allows for a high degree of flexibility regarding codecs, and media types that can be interchanged during the session. A SIP Engineer is a skilled software developer/programmer that specializes in network collaboration protocols like SIP, RTSP and RTP that help enable peer-to-peer communication over the internet, reducing costs and allowing for more efficient deployment of voice and video conferencing.

A SIP engineer can do many things ranging from building Voice over IP systems to creating specialized multimedia applications. They will build sophisticated systems with various components such as audio encoders/decoders, media gateways, signaling gateways and user agent clients. They are also responsible for configuring and optimizing the system to achieve the best results and creating real-time simulations like teleconferencing or IVRs (interactive voice response).

Here’s some projects that our expert SIP Engineer made real:

  • Secure upgrades for open source communications protocols
  • Debugging and solving complex VoIP issues
  • Carrier grade server implementations in cloud environments
  • System wide port configuration optimization
  • Integrating complex third party applications with existing softwares
  • Coordinating German DIDs/Voip Numbers with PBXs
  • Developing automated communications using Python

SIP Engineers are always in demand as great knowledge in this protocol is essential for setting up reliable communication services with low latency at an affordable rate. At Freelancer.com you can hire an experienced SIP Engineer who not only understands the inner workings of current standards but also able to keep up with new developments in the communication world. Post your project today and get the expertise you need to create a powerful yet cost effective communications environment!

From 1,352 reviews, clients rate our SIP Engineers 4.72 out of 5 stars.
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    5 jobs found, pricing in USD

    I am looking for an expert in Yeastar p560 VoIP systems to implement a solution for a trunk to trunk call forwarding inclusive of Direct Inward Dialing (DIDs). The task is troubleshooting headers, the trunks / solution is already setup. The key functionality includes: - Trunk to trunk hand off with headers (in and out) - Forwarding calls over VoIP Your expertise should span the configuration of VoIP systems for diverse and specific users. Knowledge of wireshark and pcap analysis, understanding of SIP headers. With your understanding of my needs, you'll enable seamless communication within my organization. Prior experience in similar setups is a necessity. Your bid will be a value-add to the success of this project.

    $96 (Avg Bid)
    Urgent
    $96 Avg Bid
    10 bids

    I'm in urgent need of an individual adept in Voipfone SIP services and Java. Unfortunately, I don't have access to the Voipfone documentation and API credentials. Hence, a freelancer who is already versed in said provider would be preferred. The ultimate goal is to create a compact Java project that fetches caller ID information from Voipfone's SIP services. Key responsibilities: - Creating Java code for Voipfone SIP caller ID queries - Overcoming lack of direct API access Desired skills and experience: - Expertise in working with Voipfone services - Proficient in SIP technology - Strong knowledge in Java - Ability to work around API limitations effectively The project time frame is ASAP. So a freelancer capable of prompt and efficient service delivery will be highly app...

    $542 (Avg Bid)
    $542 Avg Bid
    42 bids

    I am in need of a professional proficient in CGrates who will not only configure the system but also verify that each feature operates smoothly. Your duties must include, but are not limited to: - Masterful set-up of CGrates - Ensuring real-time account balance functionality - Implementing comprehensive billing reports Additionally, this configuration will involve 1 telecom operator or providers, so previous experience working with multiple providers would be ideal. For a successful execution of the project, in-depth knowledge and practical experience with CGrates is a must. I am looking forward to your expert contribution.

    $238 (Avg Bid)
    $238 Avg Bid
    9 bids

    Looking for consultant with previous experience in working with SCP/SRP over SIP/MSML. Even if the person is having first hand experience in implementation and on integrating SCP and SRP also may be useful. Interested candidates please apply

    $106 (Avg Bid)
    $106 Avg Bid
    3 bids

    We are seeking a talented and experienced software engineer to implement an Opus encoder and decoder in C# for seamless integration with Asterisk. The project involves handling voice audio from Asterisk, decoding it, incorporating Text-to-Speech (TTS) functionality, and encoding the synthesized speech before sending it back to Asterisk. The ideal candidate should possess the following skills and experiences: - Proficiency in C# programming language. - Extensive experience with audio processing and Opus codec. - Familiarity with Asterisk, SIP, and IVR systems. - Knowledge of Text-to-Speech (TTS) integration. - Ability to deliver high-quality code within specified timelines. Main Tasks: - Implement Opus encoder and decoder in C#. - Integrate the solution with Asterisk for audio processing....

    $1268 (Avg Bid)
    $1268 Avg Bid
    23 bids

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