Questions tagged [voip]

Voice over Internet Protocol (VoIP) is one of a family of internet technologies, communication protocols, and transmission technologies for delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. VoIP protocols can be further subdivided into Signalling and Media Protocols. Signalling protocols are used to establish VoIP sessions while the Media Protocols carry actual voice traffic.

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WebSocket event handling in background

In background WebSocket not receiving messages. I want to receive message and send acknoledgement even if app is in background. I enabled voice over ip in background modes.
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How to play sounds, like the ringing beep, while using Callkit?

I am trying to implement VoIP using webRTC and Callkit. The audio works perfectly fine during the call, but I would like to play sounds to the user while the user is initiating a call (an outgoing ...
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How to transcribe call in real-time in freeswitch?

I am trying to get transcription of both the channels of a bridged call using freeswitch and unimrcp gsr. I have followed below link and till now everything is working fine for ivr demo call. http://...
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How to use caller ID instead of “s” in SIP refer method?

I'm working on script for automated calls via SIP and ran into a problem with the Caller ID. The script runs quite simple: Calls the customer by his phone (for example, +1234567890) via INVITE ...
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Asterisk, Ignore DTMF special characters in GET DATA

I'm using phpagi $agi->get_data to read digit from user. In some telephones, user didn't hit any key, but audio playback immediately stops and get result of "D" !! I searched a lot about it, and ...
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How to auto answer incoming calls from a VOIP (voice over IP) on chrome /Firefox browser?

If a client is receiving calls on his browser (chrome/Firefox...etc) from a voice portal or VOIP , can i code an extension or a plugin for the browser that automatically accepts the call once it ...
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1answer
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CallKit Audio session starts when navigating to the application only

I'm working on a voip app now and want to support holding. But when a second call comes and I hold my current call. Switching to my first call I hear no sound at all. The way to hear it is to navigate ...
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java multiple user voice chat over a tcp connection using sockets

i can't be able to stream mic voice to different clients. I have Created a java application which can use tcp connection for chat and voice stream within a local network, in this the chat ...
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1answer
16 views

Gather input in sinch

I want my sinch app to call a number and ask the responder for enter a number to choose his language. So far I get to make her to make a call with a POST request whose body is : { "...
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10 views

How to get audio stream from RTPEngine?

I am using sipwise rtpengine in my setup of Frafos SBC and able to make calls between 2 softphone clients. I am getting call recording as well but I am looking for a solution if I can get audio ...
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Ionic 3: iOS VOIP notification using Microsoft Azure hub in production Mode

I have an Ionic 3 app with video calling functionality. I'm using VOIP notification in iOS to open the killed app. Microsoft Azure Notification hub is used on server end to trigger the notifications. ...
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how to writing SIP client in python

I need to add some SIP based functionality to my company's python based software, to receive calls from SIP soft phones. Our python app will receive the call and get the audio stream and sent to our ...
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How to make native Android WebRTC voice chat app to work slight with background music on BT headset

I'm developing an Android VoIP chat app, based on WebRTC native pre-built libraries. It's required to work simultaneously with any background music currently playing using BT headset. We have the ...
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how to record the voip call using sipsorcery sdk?

I am using sample programs provided by sipsorcery: https://github.com/sipsorcery/sipsorcery/tree/master/sipsorcery-softphonev2 What I want to record the call or record the part of one side spoken ...
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23 views

Music stops during VoIP call

1.I want my app Voip call to coexist with music playback. Every time my app enter the background, the code is set as follows: - (void)setAudioMixCatogaryAndOptions { NSError *error; [[...
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How to start a voice calling app using VOIP in iOS?

I want to make an voice calling app means the my app will open a dialer and call will be connected through app.I know that I have to use VOIP service of iOS but how to proceed in app I am not able to ...
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24 views

Errors decrypting srtp after modifying a long call with linphone sdk

I have a Android/iOS application that uses linphone xamarin sdk version number 4.1-161-g585c663. It implement "Mute" operation by modifying the SDP of the call to indicate that it should not send rtp ...
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50 views

What is similar to VOIP push and call kit of iOS in android for calling

In iOS we I have implemented call kit with VOIP push using push kit. So How can we achieve same in android ? I don't have idea that android does support pushkit like functionality to send voip push ...
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Twilio JS SDK, i want to answer a softphone call in a different window

I created a soft phone that uses the Twilio Javascript tutorial (quickstart), it works ok...my problem is: i have a system that will receive the call from twilio (browser notification) and i want ...
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37 views

reportNewIncomingCall completion not called

The reportNewIncomingCall completion argument isn't being called, which means that I'm not getting any feedback as to why my VOIP app isn't displaying the call receiving alert. func ...
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2answers
41 views

Using PJSIP open source library for VoIP media and signal handling

I am fairly new to android, I got a job as a Junior Android and I've been suggested to use PJSIP to create the back-end functionality of a VoIP app. It's meant to be handling the media transfer and ...
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37 views

How to get tones for asterisk 1.8 with dtmfmode =info?

I am newbie in VOIP field. And I don't have the all needed technical language related to that. Thank you for your understanding I tried to test IVR and see how it works. PC with asterisk in which I ...
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How to set caller name displayed at a smartwatch call notification using Android Telecom API?

I have a problem integrating a VoIP application with Huawei watch (HUAWEI B5-8F1). Our app uses Android Telecom API. The caller name is not displayed at the watch's incoming call notification, it ...
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1answer
40 views

How to receive incoming call with TwilioXamarinBindings Twilio.Voice.iOS

I'm new to Twilio and expected there to be a Xamarin SDK for iOS and Android but apparently there isn't. I have been working with https://github.com/dkornev/TwilioXamarinBindings for native libraries ...
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28 views

Android Voice call: Put phone number as a parameter in TwIML params map

I've some issues related to a making VOIP call from Android using Twilio Voice SDK. I created my own endpoint for making calls and I'm using the hardcoded phone number in the server code to make a ...
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35 views

Why I hear immediately myself (no typical echo) in SIP/VOIP softphone when calling via any SIP client on Ubuntu18

I am implementing SIP softphone on Linux (Ubuntu18). I find out, that no matter which SIP client I am using (my own or any existing solution) - lets call it side_A, I hear myself on other side (client ...
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66 views

iOS VoIP Notification Crashing Before Launch

Our iOS app integrates with Twilio and is set up to receive PushKit VoIP notifications. Occasionally and indeterminately, the app will crash before launching - preventing us from processing the push ...
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didReceiveIncomingPushWith not called

I am creating a VOIP app which used pushKit as backend to wake up app which user killed the app or in background. Initially, I created a delegate of pushKit in appDelegate file let ...
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31 views

Does G722.2 AMR-WB codec support DTMF?

I'd like to know if G722.2 /AMR-WB codec can support DTMF functionality for VOIP application. If so, what is the recommended bit rate? Otherwise, Are there other wideband codecs that work with DTMF? ...
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2answers
16 views

Choppy received voice data over UDP

I'm trying to send voice data over a UDP socket, however the received voice data by the client is choppy. Currently, I'm running server.py and client.py on the same machine. Perhaps this might be ...
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17 views

How to send delivery confirmation from the swipe up & killed IOS chat app

I am using react-native to build a chat application for Android/IOS. I am using Firebase Cloud Messaging (FCM) to send push notification in Android/IOS. Now suppose a case when A user (Android/IOS) ...
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1answer
135 views

Call timer starts counting right after callee accept a call

I'm integrating calls in my app. In CallKit documentation https://developer.apple.com/documentation/callkit there is a text: After the call is connected, the system calls the provider(_:perform:) ...
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36 views

Getting error with the Installation of OpenSIPS 2.4

I was trying to install OpenSIPS, I have installed the dependencies and everything, i configured everything, but in the final step I wanted to test if my SIP proxy Opensips is running, I typed the ...
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34 views

SIP connection for iOS in Swift & implement audio & video call with Door Phone

I am currently trying to implement audio & video call feature for door phone: https://www.tcsag.de/en/ . I have tried different framework for connection with my IOS App to TCS Door phone. But ...
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Issue in receiveing Voip Notification in Push Kit in ios

i'm developing a chat application, for message notification i'm using firebase push notifications and for call alert also. But i searched and learn about Push Kit voip notifications for call alerts ...
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1answer
56 views

Real time voice chat over IP using C#

I am try to make a VOice chat over IP using C#. First I have connected two laptops. Then I have sent message between two laptops. Then I try to send vice message it is difficult. I counld get ...
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1answer
30 views

Differences and best protocol for voip asterisk pjsip

I am currently migrating a switchboard asterisk from sip to pjsip And I find something new, you can use different protocols like udp,tcp,tls,ws,wss.... I wonder what protocol is better and safer... ...
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1answer
132 views

WebRTC server node

I'm painfuly new to webrtc world. Have learned the essentials but when I want to build my own very simple app, I understand I'm missing a lot to start develope. What I want? Build a receiver audio ...
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49 views

Pjsip call not disconnects when any one side goes out of network coverage

I am able to make calls, if anyone sides whether call initiator or receiver goes out of network coverage that time no voice packets transferring is possible, in fact when anyone side get reconnects ...
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1answer
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How to account logout from Csipsimple on click of logout button?

I am using Csipsimple for my Voip app. when i am click logout button the login screen comes but when i am call after logout on this number the incoming call is coming and call has been connected. fun ...
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1answer
73 views

Invalid Token VoIP Apple Push Notification

I'm trying to implement VoIP push notification for my VoIP app. I have generated apple push notification certificate and VoIP push notification certificate. I have generated a p12 file from the ...
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14 views

Skype to Phone Caller ID

I've been using Microsoft's Skype to Phone service to call home from abroad for a while now. Recipients of the calls see my local phone number as caller ID, so I assumed they don't pay incoming ...
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27 views

Turn Configurations using linphone in iOS

I am facing issue with relaying media through Turn using Linphone. Below is Log that my Linphone client app produces. ortp-error-RtpSession [] error sending [rtp] packet [] to myTurnServerIP:49172: ...
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20 views

Integrate Sip VoIP integration to iOS app

I'm working on a iPhone app which need to integrate audio/video calling using SIP protocol. I found some libraries/SDK which provides SIP audio/video calling: PortSIP Linphone PJSIP but they all ...
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1answer
25 views

Using a Bluetooth Headset as a Mic and Speaker in a Voice Chat App

I have a voice chat app, which works just fine. Currently I'm trying to make the app support bluetooth headsets in case any was connected. There are two cases that I need to handle: The bluetooth ...
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1answer
54 views

Pjsip/pjsua timeout errors and resolve errors calling phone numbers after registering with voip.ms from Raspberry Pi

The Goal I'm trying to make a call to a telephone number. I'd like to be able to make a call from the raspberry pi, and also make a call to my voip.ms phone number and be able to answer or auto-...
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Using SIPP to place a call, and play or confirm received audio

I am looking to compile a program that places a SIP call to my server and confirms the returned audio is heard. I can play a wav file from SIPP to an echo test on the server but I need to know (via ...
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37 views

Jitsi On iOS 9 call get disconnected after some seconds of conectiveity

Description In my system I initiate call procedure form web and send a connect information to client using XMPP message. Once client receive message it joins the room that web created and call get ...
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38 views

Oracle Acme Packet SBC receiving audio streams from multiple servers/sources

We currently have a bunch of Text-To-Speech servers that send audio streams to the SBC via RTP protocol. This works fine. The issue is that we've recently introduced a new server which sends another ...
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13 views

Slicing arrays for UDP header affecting performance Java

I'm writing a basic VoIP program in Java. In my sender thread, I have the code to record to a byte array, pack a Datagram packet with just the data, send it, receive and then play. It works flawlessly,...

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