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Call Recorder and Q.931 parser service for Windows
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IT & Programming > Software Application

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The client has made the following changes to the job.


Job awarded.

Apr 12, 2012

Job Description

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  • Posted: Wed, Apr 11, 2012
  • Time Left: Closed
  • Location: Anywhere
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  • Start: Immediately
  • Budget: $1,000 - $5,000
  • Fixed Price Job
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  • U.S. freelancers must have W9
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Q.931 Parser and Call recording software for ISDN/T1

We have designed an T1/ISDN PRI adapter that is connected to T1/PRI line and it captures all the T1 frames (from Rx and Tx path)
and send those frames in RAW format inside UDP packets to a Server.

Now we need to develop software for that server.

This software essentially an ISDN Q.931 Signalling parser and Call Recording software that will be running on
Windows 2003/2008 server and processing those UDP packets received from adapter.

We need to write software (Windows service) that will

1. Process incoming UDP packets and retrieve Q.931 signalling information from D-channel
2. From Q.931 information figure out which b-channel is corrently engaged in call.
3. Retreive data from B-channels and record the calls in WAV format to a disk.
4. Callect/display statistical and debugging information.

T1 adapter sends 300 UDP packets per second to Server's UDP port 1024.

Every UDP packet contains 60 T1 frames for one direction. ...

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Job ID: 29833484
Avg $ | High $ | Low $ — Show Pricing
  • Submit Date (Latest)

 India  |  
Experienced in development and implementation of software projects using C, C++, MFC, DirectShow and Windows Media Technologies.
Skills: C#, C++, C, OOPS, .NET Framework
 5.0   |  Private   |  2 Jobs
Bid ID: 29843811  |  Submitted: Apr 12, 2012 03:02 ET 
Proposal SEALED

Mikhail B.      
Mikhail B.'s identity has been verified.  Learn More
 Russia  |  
Professional programmer, 12 years experience. C++/C#/Java/Perl iPhone/iPad/Blackberry I prefer backends, services, network protocols, small Windows...
Skills: C#, Java, C++, Qt, C, .NET Framework, Perl, SQL, JSP
 4.9   |  $38,629 Earnings   |  24 Jobs   |  1 verified credential(s)
Bid ID: 29841342  |  Submitted: Apr 12, 2012 00:35 ET 
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