voip

How to build a softphone (using SIP protocol) using C#

Hi all! I have this challenge to build an sip softphone using c# or .net technologies. Please guide me the technology, requirements and specifications that is needed to build such. Possible requirements: Supported codecs: G.722.1, G.723.1, G.726, G.728, G.711, G.729, G.723.1, iLBC,: G.711 (A and m-law),G.729A/B/D/E, AMR, GSM 6.10/EF...

asterisk load balancing using openser/opensips

I need to load balance incoming calls to asterisk. To do this, I have set up the Openser server in front of it and I loaded and configured the dispatcher modules to do so. What I want to do is that the Openser server will receive the calls and route them to the least "busy" Asterisk server which will take care of the rest (I have an IVR ...

Analyzing Phone Call Records in MySQL DB

Hello everyone, Last time I asked a question here, I got tons of great ideas on how to solve a particular problem. Like I explained last time, programming is just something I love to do, but it's not something I studied in school, so I have no proper methods of doing things. I'm an Electrical Engineer struggling through a recession doi...

integrating php mysql and voip and text to speech

Im looking for a starting point of writing an application that will allow a php/mysql program to interact with a VOIP caller(s). The idea is caller calls into a number, and that number reads text output from php/mysql based on menu options on the call. Where do i start with this project? Specifically, getting the voip to interact with ...

Python SIP library

I need to write python application connect to trixbox that run as SIP server. But I not found any library that implement in python. I found SIP SKD at http://www.vaxvoip.com/ but it not support python. Can anyone suggest me an alternative to VaxVoip? Thank you. ...

Flash Player and VoIP

I found Flash Player 10 supports VoIP but I couldn't find serious documentation about this feature. Could you post some decent link? :-) ...

What wrong when SimpleXMLRPC and DBusGMainLoop working in the same time

In python I try create a service that maintain calling event between SflPhone(dbus service) and external app, when I start SimpleXMLRPCServer my service no longer response for any calling event, such as on_call_state_changed function was not called. When I comment out thread.start_new_thread(start_server(s,)) everything is work well. ...

How to call a TieLine (Cisco VOIP phones) using Java

I have been playing X-lite for awhile now. It is extremely useful when I need to call a Tieline within our office environment. The only detail I know about it is, it connects to a domain server and that's it. I would like adapt the same logic into Sametime that IM we use internally. Anybody have any related links for the same ? ...

Simple sip based client interaction... Any Ideas

Hi Floks, I am tring to do the following: I want a SIP User Agent to perform the following steps on receiving an inbound call (call set up request). 1) Read the caller ID from the SIP request and Log the details to file 2) Drop the call (terminate the call without picking up the call) I have not been able to find a high level api th...

How to compile pjsip for iphone 3.0

Hello, I have been trying to compile pjsip for iphone 3.0 but I have been unable to do so. I have tried following the guides on siphon and voiphone (open souce iphone projects that use pjsip). And apparently I am not the only one that is unable to compile pjsip for iphone 3.0 has anyone been able to do so succesfuly?. How can it be done...

Answer modem using voip

I have an application where I have about 10,000 pieces of monitoring equipment across the US that periodically dials into a bank of 32 phone lines. I have two receivers of 16 lines each that answer the call and temporarily stores a small alpha string. I then have a computer that polls the receivers and parses the string and copies it to ...

Does anyone know any service similar to Tropo?

I have used tropo and pretty happy with the service http://tropo.com/ Does anyone know of a reliable alternative? ...

Open Source VoIP/SIP Objective-C Code

I have been tasked with investigating the feasibility of writing an iPhone App to access our internal VoIP/SIP systems. I've never coded anything close to VoIP before. Are there any open source VoIP/SIP libraries/examples in C or Objective-C? An O/S iPhone App that I can skin and add our required features to (mainly UI related) would b...

Detect H.323 by simple sniffing?

Is it possible to detect if a H.323 connection (phone call) is up by simple sniffing traffic on an adjacent node? ...

VoIP using PjSIP : pjsua_acc.c SIP registration failed, status=408 (Request Timeo ut)

I am trying to run test VoIP program as given in http://www.pjsip.org/pjsip/docs/html/page%5Fpjsip%5Fsample%5Fsimple%5Fpjsuaua%5Fc.htm I am trying public SIP servers present at http://www1.cs.columbia.edu/sip/servers.html But I always get error message as 14:33:25.515 pjsua_acc.c SIP registration failed, status=408 (Request Timeo...

Is it possible to use MJSIP api with Blackberry?

Hi, I am trying to develop an VOIP application for blackberry,after a long surf i came to know about mjsip api.But i have a doubt that is it possible to use this api with blackberry development to create VOIP application.Please anyone knows the answer help me. ...

Problem with SIP BYE message

I am writing a SIP server, and I have it taking calls and then connecting them to a voip phone, the problem is when you hang up the voip phone, there's something wrong with the forwarding of the BYE message where my cell phone doesn't end the call. Here is the SIP message log (I replaced my server's phone number with 1234 and my cell p...

Is it possible to write an iPhone app which can be active while the person is making a call, and "talk" to the person on the other end?

For instance, the app could say something like, "Please wait." or "I'll be right back". A friend asked me if it was possible, and since I don't have an iPhone I couldn't answer the question. Thanks. ...

Suggested Approaches to programmatically make and record a VOIP call

I want to write a program that will be able to call into my company's bi-weekly conference calls, and record the call, so it can then be made into a podcast. I am thinking of using Gizmo's SIP interface (and the fact that it allows you to make toll-free calls for free), but I am having trouble finding any example code (preferably in Jav...

VOIP Softphone with API or strong command line interface

Does anyone know of a sip softphone that can be controller by an API. Xlite can launch a call through command line interface, but thats pretty much it, preferably looking for something cheap, the voip SDKs iv seen are pretty expensive and i wouldn't have any knowledge of sip protocol or development. ...