**Legacy Telephony System Enhancement & Integration**

Open Posted 19 hours ago Paid on delivery Ends in 6 days
Open Ends in 6 days

I am looking for a highly skilled developer to enhance my legacy telephony system, developed in Visual Studio 6.0 (C/C#) on Windows XP. This system currently processes SIP-based phone calls through softphones, connects to a SQL Server backend, and includes a middleware component in C and C# (.NET).

Key Areas of Focus:

- Enhancing the system features

- Improving the SIP-based phone call processing

- Upgrading the integration capabilities with other systems

The ideal candidate should have:

- Strong expertise in legacy Windows environments

- Deep knowledge in telephony protocols

- Proficiency in .NET technologies

- Proven experience in modernizing and integrating older codebases

I value your ability to maintain the current system stability while pushing for these enhancements. Experience with SIP call processing is a plus. Your role will be pivotal in improving our telephony system's integration with other systems.

C# Programming .NET Microsoft SQL Server C Programming Visual Studio

Project ID: #38987232

About the project

52 proposals Open for bidding Remote project Active 4 hours ago

52 freelancers are bidding on average €17/hour for this job

augurstech

A Warm Hello! We are readily available to start working on this project! I have read your job posting and found our skills best suited for the project scope. I would be glad to mention here that our team having develo More

€15 EUR / hour
(142 Reviews)
9.3
AwaisChaudhry

Hello, I understand that you need to enhance your legacy telephony system which is built on Visual Studio 6.0 and runs on Windows XP. My approach will be focused on improving the features and processing of SIP-based p More

€24 EUR / hour
(79 Reviews)
8.5
tangramua

Dear Greg G.,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project More

€22 EUR / hour
(12 Reviews)
6.5
rashidamjad

Hello Greg, I appreciate the opportunity to work on your legacy telephony system enhancement project. With over 5 years of experience in full-stack development, I have a strong background in both legacy Windows enviro More

€24 EUR / hour
(31 Reviews)
6.3
haseeb6291

Hey there, With over 8 years of experience in .NET, C# Development. I'm interested to discuss your project's timeline, budget, and detailed requirements. Let's schedule a meeting at your convenience to explore further. More

€12 EUR / hour
(52 Reviews)
6.0
mandavcon

With a decade's worth of experience in efficiently coding web sites and applications, I can bring you top-notch skills in the areas of your project that matter most for your legacy telephony system - C/C# programming a More

€15 EUR / hour
(10 Reviews)
5.1
Yuriisay

Hi there, I’ve carefully read your project description - **Legacy Telephony System Enhancement & Integration** and really interested in this job. I’m a senior software developer for 8+ years experience and can offeri More

€29 EUR / hour
(5 Reviews)
4.1
bizmanas

I have worked with telephony equipments, using python and c#. I have worked extensively with telephony systems and feel confident in my ability to enhance and integrate your legacy system using my skills in .NET, C#, a More

€50 EUR / hour
(9 Reviews)
4.3
mdsdnd

Hello I am full time freelancer with more than 8 years of experience in .NET, .NET Framework, WPF, SQL Server, .NET Core, WEB APIs, MAUI, MAUI Android and iOS, WCF, Entity Framework, Blazor, React and NODE.JS. I have More

€12 EUR / hour
(2 Reviews)
4.4
Saimi786

Having worked extensively in Windows legacy environments, I am confident that my skills and experience make me the ideal fit for your project. My command on C/C# development coupled with the high level of expertise I p More

€15 EUR / hour
(20 Reviews)
4.3
Anassandiya

Hi, I am Muhammad Anas. With over 8 years of professional experience in creating Desktop and web applications, I believe I bring ample experience to the table with skills such as C#, Java, node.js, .Net Core, Restful A More

€15 EUR / hour
(14 Reviews)
3.6
Julian29

Hello, I am highly interested in your project to enhance and integrate your legacy telephony system. With strong expertise in legacy Windows environments, .NET technologies, and SIP-based phone call processing, I can More

€15 EUR / hour
(1 Review)
4.6
umair4639

Hello sir, I’m excited about the opportunity to help modernize your legacy telephony system. With my extensive experience in C programming, .NET, C#, SQL Server, and Visual Studio, I specialize in enhancing and upgrad More

€18 EUR / hour
(4 Reviews)
3.3
yasirk1979

Hello, I have over 15 years of experience in system development and modernization, and I’m confident I can help enhance your legacy telephony system. To ensure I understand your needs completely, could you clarify: More

€15 EUR / hour
(1 Review)
3.1
elirc

well, the tech you mentioned are old versions what I did in several years ago. but very interesting. I hope to work with you, would do my best. Thank you!

€15 EUR / hour
(2 Reviews)
2.8
engruhulajom

Hello Dear! Good Day! Hope you are doing fine. This is Ruhul Ajom Sagor. I am an expert "Web Developer" with 10+ years of working experience in PHP, HTML5, CSS3, JavaScript, jQuery, Bootstrap, MySql and different Fra More

€15 EUR / hour
(3 Reviews)
2.0
petrob2

Hi, I'm an experienced mobile app developer with a proven track record of delivering high-quality iOS and Android applications. I am very familiar with Flutter, React Native, Android & Kotlin. I'm excited to collaborat More

€18 EUR / hour
(1 Review)
2.0
venki1987

With over 14 years of hands-on experience in Windows application development and WPF, I have a deep expertise in building intuitive, high-performance desktop solutions. My focus has been on creating responsive, user-fr More

€16 EUR / hour
(1 Review)
0.7
imranarshad87

Hi, Could you provide more details on the specific features you'd like to enhance in the telephony system? Additionally, are there any particular systems you want this upgraded system to integrate with? With 15+ y More

€15 EUR / hour
(1 Review)
0.6
elvis162

Hello there! Going through your job description, I believe my skill set makes me an excellent fit. I am very confident for your job - **Legacy Telephony System Enhancement & Integration** because I have worked on sim More

€19 EUR / hour
(0 Reviews)
0.0