voip

Voice Conference - how to have more people in conversation?

Hi, first of all, I'm just a hobbyist, so I'm sorry if this is dumb question or if I'm being too naive. (It also means that I can't buy expensive libraries) This is the situation: I'm building a simple voice chat application in C#.NET (something like Ventrilo or TeamSpeak but only for about 15 or 20 people, and running on 100Mbps LAN). ...

VoIP App using Sailfin

Hi everyone, I'm looking at developing a VoIP application running on Sailfin (https://sailfin.dev.java.net/). I have the server up and running and a sample app installed. What I want to be able to do is: Receive calls from my landline in my VoIP application. Make calls from the application to other numbers in the PSTN. The part I'm ...

How to differentiate between silence pattern and a beep pattern in sound signals in iPhone OS

I am doing sound latency test. my device will be receiving either a beep signal or a silence signal. How can i differentiate between these signals. Please help me. Thanks in advance.. ...

Technology behind twilio

I wanted to discuss the technology behind Twilio. I have been playing around with the service for a few days now and it is simply mind-blowing. While I don't have a direct need for it right now, I am curious to find the back-end of the technology. So can anyone shed some thoughts on how does Twilio do its magic? ...

How to record/obtain sound samples 40ms iLIBC beep/silence

I want to record/Obtain a 40 ms sound sample which produces a BEEP (iLIBC). Does anyone know of any tool which allows me to do this? ...

What software or service can I use to programatically make phone calls with?

I'm looking to programatically make phone call reminders to customers based upon their opt-in requests. I am NOT a telemarketer. I need to make a phone call, and play a message. I need to leave a message after the beep if an answering machine or voicemail is detected. I need to know if the message was successfully delivered. Ideally, I...

How can I know the status of a call - Asterisk and PHP?

I'm developing an application with PHP and a Asterisk Server. One of the features of the application is to check the call status (ringing, answered, hung...) of an specific caller ID, so I would like to know how to do this, because I'm trying with a socket and the command status but I think it has to be a better way to do it. Thanks in ...

begin with java voip

i have to write a chat application enable to conference calling with voip, but i dont know anything about this technology at all and i couldnt find anything useful. do you know any useful site which help to begin working with it? thanks ...

The best way to impliment a SIP VOIP client for blackberry

How to implement a SIP/VOIP client for Blackberry smart phones? where to begin? should I start with mjsip? is there any sample code available specific for Blackberry? Thanks in advance, Afzal ...

How to get started on VOIP programming?

How to start developping a VoIP product. I'd like to hear something of the experienced, thanks in advance! ...

Android - supress the native In Call Screen and replace with 3rd party?

Currently creating a VOIP application for Android and I was wondering is there any possible way to supress the In Call Dialog when sending a call over GSM and use our own 3rd party In Call Dialog or screen instead? At the minute when we switch from our VOIP call and send it over GSM via the ACTION_CALL intent it does everything we want ...

How can I mux/demux RTP media from one stream?

Currently, I'm finding a lib able to stream video from multiple sources through one RTP Stream (one connection). Anbody have sugesstion on it? Actually, I figured out that Opal 3.8 is VoIP lib, supported RTP/H264. But I don't know whether it can support mux/demux rtp media from one stream? If no, can you give me some suggesstion? Thank...

VOIP: How to Create a Web app to make Call like skype or msn ?

This is a very newbie question. I want to know how to create a WEB APP to make Call ( using VOIP protocoll I think ). What program languages do I have to learn ( client and server side ) ? ...

Problem with sending RTP packets to the SIP server

Hi all! I have a strange problem, mayby you'll help me sort out what's happening. I'm developing a softphone, and sometimes it even works! :) So "sometimes" is the key word. There is a problem with sending voice through microphone over the phone: sometimes it works, sometimes it doesn't. I can't sort out why this is happening. I chec...

Getting started with Voip programming

Hi at all, I need to create a voip application ( like msn ). What do I need in general ? ...

Flash Media Server VS Sip Server: Difference for Voip

When using Flash Media Server and when using Sip Server ? What is the difference ? What would you recommend ? . Thanks ;) ...

Develop Voip application for ONLY PC-to-PC call.

I want to create an application for ONLY Pc-to-Pc call. Do I need server like asterisk or SIP ? How can I get start ? I will use P2P architecture. ...

Peer-to-Peer call with Asterisk or Trixbox

I have read skype is a p2p program !! Is there a way to configure Asterisk ( or Trixbox ) for make P2P call ? ...

Android, phone call audio stream via wlan

I am planning on developing my specific voip app for android. Here's the scenario: when a phone call occurs I want to hear the person who's calling on my local pc speakers and I want to speak to him via my own pc microphone / headset. So I need to send the audio stream of both me and the person I am talking to via the wlan network. Som...

Are there free client Voip developed in Flash ?

Are there free client Voip developed in Flash ? ...