[url removed, login to view] Telephone Recorder with USB Modem - repost

I need [url removed, login to view] functions to detect when a phone is off-hook (meaning, a user has answered the phone or is placing a call), and to record the audio on the line until the hangup event is detected.

I need this to work with a USB Modem (don't know which types of modems supporting line hook detection).

When a handset picks up the line, there is a voltage drop. The modem will need to monitor this voltage drop, and then pick up the line and begin recording. There may multiple handsets that can pick up on the same line. The modem needs to detect when all the handsets have hung up, and then stop recording.

Special drivers may be needed for the modem.

Milestone for proving the line/hook/voltage detection is required.

Skills: .NET, Telecommunications Engineering, Visual Basic

See more: line recorder, net usb modem, usb modem, telephone work, Pick basic, phone detection, recorder audio, multiple modem usb, Detect USB, detect usb modem net, modem usb telephone recorder, usb modem call, modem multiple, telephone multiple line, net audio recording, usb drivers, milestone visual basic, hook audio, net usb modem call, phone call recorder, usb modem multiple, usb monitor, audio usb, can voltage work, drop stop

About the Employer:
( 0 reviews ) New York, United States

Project ID: #4108983

21 freelancers are bidding on average $2179 for this job


Hi We are interested in your project and read your requirements.We have completed 150+ big projects in last 5 years. Please check private message board for details.

$3000 USD in 28 days
(24 Reviews)

This is an interesting problem. I would recommend that we use the TAPI api. There is a .net wrapper the is opensource and available for free that would be the best option. The issue comes from that I am not sure if it More

$2500 USD in 15 days
(76 Reviews)

Hi, We have extensive work experience in .net website design and development so, we have confident to our ability, we can do this work.for more information see PMB-Thanks.

$3000 USD in 45 days
(4 Reviews)

Hello, This is a Windows expert developer and I would like to estimate your request. I have experience in the modem and telephone windows API, so I can tell you in advance that VB.NET is not the best suitable lan More

$3000 USD in 30 days
(9 Reviews)

We can work in your Telephone Recorder. I am a leader of the team expert in several tecnologies like PHP, .NET, Oracle, SQL, Movil applications. I have 14 Years of experience in Software development Windows and Web. Ex More

$1500 USD in 25 days
(18 Reviews)

Please see PMB.

$2500 USD in 20 days
(18 Reviews)

Hi, I have gone through your requirement and I am glad that We can accomplish this task, Please give us opportunity to work with you. Please check PM . Thanks, TTS Team

$1500 USD in 15 days
(32 Reviews)

Hi osmosis311 , I (Myself a senior ASP.NET programmer using C# and VB) have a team having experience of more than 5 years in developing web and mobile applications. I have a team of expert programmers who write robust More

$1650 USD in 45 days
(8 Reviews)

Hi We can help you, we are experts in this topic, we have a lot of experience in telecomunication with software, you can check our profile and reviews, we can provide you an excellent solution, thanks in advances More

$3000 USD in 45 days
(1 Review)

Hi, Veltrod Software services is a global software consulting company specialized in providing Mobile applications, Social media frameworks and eCommerce solutions. Leveraging best-in-class people, processes, and te More

$1600 USD in 30 days
(2 Reviews)

Thanks for the opportunity to submit my bid for your requirements. We are telephony recording experts and have been working on telephony for the past 25 years. Please see PMB for additional details.

$1500 USD in 15 days
(0 Reviews)

Mathalogic offers a wide range of IT and IT enabled Services that match international standards in terms of Quality and Innovative delivery. We offer comprehensive services across a wide range of platforms, proces More

$1600 USD in 15 days
(0 Reviews)

Hi, i can handle this project. I would need the following information: a. The name of the modem. b. Possibly if you can ship one to me in case am unable to buy. c. It might be neccessary to write lower level device More

$2300 USD in 30 days
(1 Review)

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$3000 USD in 50 days
(0 Reviews)

Respected Sir/Ma'am, How will the environment be provided for the said project? Viral.

$3000 USD in 30 days
(0 Reviews)

********** HOPE TO GRAB YOUR ATTENTION ********** I can do this Multi-platform App. I have done plenty of Such apps in the past. I can send you demos of my apps. Please check attachment.

$2000 USD in 45 days
(0 Reviews)

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$1500 USD in 10 days
(0 Reviews)

An ISO 9001:2006 certified company, We can fulfill your requirement because we are professional worker, we work for our client satisfaction. for more detail please check private message board. Thanks.

$1600 USD in 7 days
(0 Reviews)

Dear Sir/Mam, we are ready to discuss with you on your project .We are a team of developers and designers who are in this field from more than 20 years. We are a web design and Development Company, providing web develo More

$2000 USD in 60 days
(0 Reviews)

Very strong Telephony skills using Visual Basic. Thanks for the opportunity to bid on your project.

$1500 USD in 30 days
(0 Reviews)