Voice Over Internet Protocol is a name of a family of technologies that allows transmission of voice over an established network connection. What is usually discussed, though, is Internet Telephony - bidirectional voice (and lately video) transmission over public networks.

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Sharing a wireless network connection with a wired connection

I have a need to setup a VoIP phone that needs to be plugged into a wired net. However, I only have wireless Internet access as the modem/router are upstairs and not accessible to the phone. I have a ...
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1answer
896 views

Is there a mature, reliable VoIP client in Windows RT? [closed]

I am considering purchasing a Windows RT device. I currently use Bria on my IOS devices, which works pretty well (except for battery life). Anyway, I noticed on CounterPath's website, that they do ...
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1answer
235 views

Why do I need a managed switch and which one should I buy?

I bought a 2nd router and I want both routers to have direct WAN access to the modem. One of the 2 routers directs VOIP traffic to a telephone line port. This VOIP service is provided by the cable ...
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114 views

VLAN & VPN for IP Phone [closed]

I have a LAN with some IP phone and some PCs. This LAN is connected via VPN to another office. For several reason I cannot change the IP address of the IP Phone (static) and for the PCs (DHCP): the IP ...
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2answers
841 views

Sipura / Linksys / Cisco SPA3102 problems with analogue phone

I have bought 2 of these SPA3102 - One direct from china(verified original) and one from Ebuyer UK but it is called SPA3102 -UK I find this guide and followed it I am only going to talk about the ...
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1answer
535 views

How to establish SIP connection, when SIP-proxy is required?

I have Asterisk/1.8.13.1 Asterisk GUI-version : SVN--r Yes, quite old one, but I can not update it since this is installed on my Synology NAS. NAS is connected to internet thru router Asus RT-N16. ...
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1answer
227 views

Asterisk distribution with very fast deployment [closed]

I have zero experiences with Asterisk but need to choose the best bare-metal distribution (running as a VM guest) for my needs. Asterisk server will answer calls, auto responder says caller ...
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2answers
481 views

Is there such thing as a software switchboard for Trixbox/freepbx/asterisk? [closed]

We use Trixbox CE and would like something so that we can load a window that tells us which lines are in use around the office. Currently no need to use it to actually make calls or anything, but just ...
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1answer
297 views

Asterisk extensions.conf confusion

Hopefully someone out there has an answer, but I have a couple lines in an existing configuration I need to fix and with a somewhat weak understanding of how Asterisk works. First off, I have a ...
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1answer
616 views

What does it mean to 'unlock' a VOIP adapter?

I'm thinking about buying VOIP adapter for home use. I already use SIP software on my PC and Mobile, but i think it would be easier to just pick up the phone at any time and call. And I could recycle ...
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1answer
418 views

fail to reload module res_odbc.so in asterisk server

I configure my /etc/asterisk/modules.conf file with following code: [modules] autoload=yes preload => res_odbc.so preload => res_config_odbc.so After that, i went back the CLI console to ...
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1answer
153 views

SIP load balancing

Folks, we own a set of phone numbers which we have routed to our VOIP provider. In turn, they forward the calls to our Asterisk box coloed in their datacenter. Is there any possible way to get ...
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1answer
491 views

Can I use a Bluetooth headset with my Windows desktop/laptop for Skype or other VOIP applications?

Can I use a Bluetooth headset with my Windows desktop/laptop for Skype or other VOIP applications? I am considering purchasing a MOTOROLA H730
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3answers
534 views

Is there actually a way to make video calls through XMPP/Jingle WITHOUT Google Talk?

Good day people, I'm writing because I've spent the whole day trying to make video calls through XMPP but I haven't really found out if it's actually possible. There are many clients which ...
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0answers
207 views

How to run secure voip traffic without using vpn

I use quintum tenor for voip traffic using VPN SSL Tunnel. VPN server is based in another country. VPN used enough bandwidth, and we need to reduce bandwidth consumption. Is there any SECURE way to ...
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1answer
386 views

What other ports should I block to maximize server security? PS using IPTABLES

I have blocked ports 80, 9001, 9080. What other ports should be blocked to maximize security? PS: It is a asterisk server / PBX Sorry: New Systems Admin here :) Thanks!
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2answers
343 views

Can Microsoft's Lync VOIP functionality be scripted?

My employer uses Lync for all of our desk phones, and one of the features of Lync is that you can set your phone number to forward to another, say your cell or home phone. To do so, you have to ...
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0answers
24 views

What does a device with 2FXS & 2 FXO mean [duplicate]

Possible Duplicate: What does a device with 4 FXS mean? as title, What does a device with 2 FXS & 2 FXO mean is it mean that i only can connect to 2 phone? thanks
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1answer
125 views

What hardware device do I need so I can connect my phone with an ethernet jack to my wireless internet

I have a telephone which has an ethernet jack in the back (it uses VOIP). It will sit on the 2nd story of my house. My wireless router is on the first floor of my house. What wireless ...
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2answers
65 views

Sending voicemail to email inbox [closed]

Is there any software that makes it possible to send voicemail from a specific cell phone or Skype number to a specific email address? I'd like to be able to check my voicemail and email at the same ...
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4answers
442 views

What does a device with 4 FXS mean?

If an analog telephone adapter is advertised as having 4 FXS ports, what does that mean to me? Can I connect 4 different phones to it? If it doesn't have an FXO port, can I connect it to the public ...
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1answer
750 views

Asterisk PBX - Transfer nuisance calls to special extension

I'm using asterisk 1.8.14 and freepbx 2.10. I keep getting telemarketing calls and want to do the following when they call. Have a special extension number I can manually transfer the calls to The ...
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351 views

X-Lite v4 softphone doesn't show up onscreen in Windows 7 (only nonfunctional tray icon)

I installed X-Lite on a 64-bit Win 7 machine. Install seems to go smoothly, then when I launch the application, its splash screen appears, then it goes away, leaving a tray icon with the familiar ...
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2answers
123 views

How should I choose a VoIP provider? [closed]

Suppose you want to select a VoIP provider that would make possible for you to make calls from your computer to regular phones. Where would you look for names, and what sources or criteria would you ...
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1answer
60 views

What should someone look for when selecting a sip registrar?

Is there any relevant differences between providers that you should look for? Or they are basically all the same and you just choose the one that you like the name more?
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1answer
123 views

google-voice not working outside of gnome

I got google-voice working in ubuntu under Gnome. But for some reason when I log into my WM, Xmonad, google voice doesn't recognize my webcam. Do I need to run some daemon or app along with my WM to ...
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2answers
328 views

One VoIP conversation but two RTP streams?

I'm testing a VoIP system based on OpenSIPS. It has no RTPproxy, so calls do not pass through OpenSIPS. I tried to make a call between two smartphones, and it succeeded. I also turned on Wireshark, ...
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2answers
1k views

Why G.722 has 64 kbps bit rate?

I'm learning a few things about codec, and now I'm confused by G.722. There's a way to calculate codec bit rate that I read here on wikipedia. It said: bit rate = sampling rate x bit depth G.722 has ...
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0answers
726 views

Wi-Fi voice calling methods on a jailbroken iPhone? [closed]

I have a jailbroken iPhone 4S on AT&T in Cambridge, MA. My location has unreliable AT&T coverage, and I can't use Verizon or Sprint (too much coverage = pilot pollution). It's got to the point ...
2
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3answers
827 views

I want to connect to my router through wifi and use its pstn phone line

Can anyone refer me where to look I want when I am not at home to connect to my router and use it to call through my phone line (so when I am out of the country I will pay local price to place calls ...
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1answer
363 views

My VOIP phone constantly loses service when plugged in via an Edimax router

I have VOIP phone service with Jivetel using a Linksys spa2102 VOIP device. I recently purchased a new Edimax BR-6428ns wireless n router and plugged my linksys device in through it. I made the ...
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417 views

How to configure Transparent IP Address Sharing (TAS) on a Mediatrix 4102 with DGW 2.0 firmware? [closed]

I am making the switch to VoIP. I chose voip.ms as my service provider and Mediatrix 4102 as my ATA. One reason why I chose the Mediatrix over other popular consumer ATAs is that it's supposed to be ...
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0answers
144 views

encrypted voip traffic for voip provider that doesn't offer encryption

I currently use a VoIP service with one VoIP provider. However, this company doesn't offer encryption to VoIP traffic. This mean that all voice transmit via my IPphone can be sniffed and listen. (I ...
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0answers
159 views

Start call on Cisco Voip phone with an http link

I don't have any previous experience with IP phones. I'd like to know if there is a way to make a call with a Cisco IP Phone (model 7912) clicking just a web link. Actually the phone is connected to ...
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2answers
591 views

Hotkey to toggle internet / network communication

I'm looking for a way to quickly toggle my wireless internet connection on and off (to prevent interference with a VOIP device on the network). Newer laptops have a dedicated button for this purpose, ...
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2answers
340 views

Setting up a US-landline/Europe-landline voip connection

I need to provide a clients in the US an ability to call a US landline phone, and have the call routed to the mobile phone in europe, where our office is located. I need to have it implemented at a ...
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1answer
497 views

Cisco IP Phone to SPA3102 to PSTN

I've just picked up a Cisco 7940G and configured it with SIP firmware (8.2). I'd like to use this as my office phone, communicating with POTS/PSTN via a Linksys SPA 3102 VoIP gateway. In theory, this ...
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0answers
165 views

using zfone in practice - how do i force gtalk to use SIP?

Recently i got a need for a fully encrypted and safe communications. Believe it or not - there is no simple solution. Criteria for needed software include: 1. Encrypted 1 to 1 chats (text). 2. ...
2
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3answers
4k views

How to associate a softphone with a phone url

I'm trying to get click to call to work using Qutecom for a softphone and a Greesemonkey script to turn phone numbers into clickable urls. Whenever I click on the phone number link I get an error ...
2
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1answer
822 views

Does mobile phones use TCP/IP? [closed]

Does mobile phones (any kind of mobile phone?) use TCP/IP over radio signals for internet? I would also like to know if they use VoIP for telephony? Please tell me what they use, I'm confused.
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1answer
158 views

Cisco 7962 cable unpluged with POE

I've got a collection of CISCO 7962 IP Phones powered by POE. On some of them I plug them in to our POE switch and I get an error that the Ethernet cable is unplugged. That strikes me as strange ...
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1answer
90 views

IP based public addressing system

We are trying to create an IP based PA system for my institution. Our first hunch is to use an asterisk server with clients in auto-answer mode. Is there any better method, or a more apt open source ...
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1answer
2k views

How can I stream music through VoiP?

What I want is: Stream a music through Teamspeak/Skype/Mumble... while I can talk also. Using Stereo mix is not an option. If I use that, I can't speak, and everyone will just hear themselves. OS: ...
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1answer
334 views

VoIP - need setup ip network without SIP operator

Need to make next one: for ex i'm now in UAE, but i need to make a call to my girlfriend who is in Ukraine. I need to find the way how can i make the connection to my home router and make the call ...
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0answers
684 views

Using Asterisk with multiple phone lines (PSTN)

I've had experience working with Asterisk over VoIP. Did pretty complex stuff with it as long as it had ethernet cables and internet connected. I've gotten used to connecting the box to an ITSP and ...
14
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3answers
5k views

Receive and route phone calls through computer

I volunteered to work for a political campaign. We want to make a unified number (with multiple lines) to put as contact us number. We want it to work like customer support numbers, you call a fixed ...
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1answer
495 views

Two VoIP connections on a single DSL service

I want to connect two SIP phones to my router, alongside one another. One connects to my commercial VoIP service provided by my ISP. The other connects to my business VoIP PBX as a remote extension. ...
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1answer
736 views

Do many of the betamax voip services allow caller id spoofing? [closed]

There are many betamax voip services such as voipgain, voipcheap, voipstunt which ask you to supply a phone number and a destination phone number when making a call (as can be seen in the free trial ...
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1answer
743 views

sip trunking- asterisk(as a sip server) configuration

I would like to create a voip between two clients. I have two asterisks installed and configured on two public ip: Asterisk1 and Asterisk2. I have two clients defined in asterisk1 (client1,client2) ...
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1answer
635 views

What technology do 160by2.com use to send SMS messages [closed]

The India based websites 160by2.com and way2sms.com allow users to signup with, and verify, a mobile number. The user can then use the website to send SMS messages to other mobile numbers with their ...