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.

learn more… | top users | synonyms

1
vote
0answers
122 views

pfSense allowing inbound sip phones, but not sip trunk

I am currently trying to get an inbound trunk working on a remote Asterisk machine. The ip phones are remote and connecting just fine through port 5060 (I can make internal calls to voicemail, other ...
0
votes
1answer
70 views

How do I keep my file transfers from sucking up all my bandwidth?

How do I set up a router so that my file transfers have 2nd priority? My VOIP and GoToMeetings suffer if we are transferring large files from our internal network to a hosted server. 70 gig backup ...
2
votes
1answer
135 views

How to I setup a VoIP Server (not connected to telephony)

What I need is a VoIP server that allows people use their data bundle to make calls within an app (mobile/PC), but not necessarily app to phone but App to App. That means, both users have the app ...
-1
votes
1answer
212 views

Google Voice vs Pinger for PC (Windows 7) [closed]

I have a buddy who is going through a very rough time financially. He currently does not have a phone but does have a laptop with wifi access. I have been looking for a way to help him get a free or ...
0
votes
0answers
79 views

automated text to speech phone call from ubuntu server to deliver one time confirmation code

Basically, I want to implement the same type of system Google and other sites use to take someone's phone number, and call the number from the ubuntu server with an automated voice that presents them ...
0
votes
1answer
3k views

Which one VoIP SIP audio codec should I choose to high quality calls?

The quality of VoIP calls depends on the codec used for the transmission and on the bandwidth of Internet connection. I want to use best optimized codec for my Internet connection. I have to select ...
1
vote
1answer
127 views

virtual pbx using x-lite stuck at offline

I am using x-lite to connect to virtualpbx.net. One of my user's x-lite is stuck at offline and the availability dropdown box is grayed out. I don't see any error messages in x-lite or virtualpbx.net. ...
0
votes
0answers
384 views

Yum hangs on setting up package sacks

I'm having trouble with Yum installing postfix. I'm using yum on a trixbox/freepbx system and trying to get voicemail-to-email setup for VOIP Cisco phones in an office environment. Anyways I try ...
0
votes
1answer
144 views

How to Implement a VoIP Auto (speech) Dialler

Can anyone suggest/recommend a way to implement a speech dialler using a SIP VoIP service? The software/VoIP equivalent of this I want to dial out and play a pre-recorded message as part of an alarm ...
4
votes
2answers
739 views

Secure PC-to-PC voice call without going through a server [on hold]

I want to voice-chat to a friend over the Internet. (Video would be a nice bonus.) I want the conversation to be private and I do not trust Skype, Google, etc., so I want it encrypted end-to-end. ...
0
votes
1answer
164 views

Cisco SPA112 ATA Only Rings Half the Time

I have a Cisco SPA112 ATA Unit which I have set up to connect to an online SIP account (no LAN Asterisk servers in use) and I have this issue where sometimes the unit will not ring when someone calls ...
0
votes
3answers
298 views

Cross-platform, decentralized (or available server daemon) IM/VoIP that's easy to use and actually works? [closed]

Given recent revelations about constant dragnet surveillance, I've decided to start looking for alternative forms of communication that let me be in control end-to-end. My first step is to wean ...
1
vote
1answer
55 views

Sending keyboard presses to minimized rdp windows

Is there a way to send key presses to a minimized rdp window? For example: If I was rdping to another computer that had a voip program that uses a push-to-talk key (for example, mumble) is there any ...
1
vote
0answers
47 views

How can I blacklist a program from accessing a mic or volume controls?

In this particular case, I have a program that ignores settings for mic usage (eg, it always-transmits even when its own push-to-talk and such is set, and causes all other program's volume to be ...
2
votes
2answers
577 views

Realms in Asterisk

How can a system (Asterisk) accept realms? I mean, for example we have two SIP accounts: exampleuser@test.com and exampleuser@anothertest.com. For Asterisk by default, these two accounts are the same ...
0
votes
0answers
166 views

Firefox can't find the file at sip: xxxx

Hi have a voip service that works great and use Bria Counterpath softphone - also good. I have installed a click to call add on for Firefox and keep getting this error: Firefox can't find the file ...
0
votes
1answer
404 views

Wake on LAN/VoIP for Skype use?

I'm surprised I can't find this anywhere, but is it possible to have a sleeping PC wake up when a Skype call comes in? If so, how to set it up? Using XP.
0
votes
0answers
569 views

Converting G.722 audio files using ffmpeg

I have a G.722 RTP stream that was captured with Wireshark, and am trying to convert it to PCM using ffmpeg. I have done similar things with other codecs (like G.729), and the conversion works ...
1
vote
1answer
94 views

Using Ekiga from a hotel

Since Skype crashes whenever someone signs in, signs out, or sends a chat message, it has become unusable and I need to change. A post at AskUbuntu lists Ekiga as an alternative. When I try to use ...
0
votes
1answer
213 views

How many users could I host on a VOIP server running on my home internet connection?

I have 25 Mbps on the downstream and 2 Mbps (250 KBps) on the upstream. I imagine upload speed is most important. For a very high quality TeamSpeak audio codec, bandwidth transfer for a single user ...
1
vote
3answers
308 views

What is the difference between VOIP and Internet Telephony?

These terms are often used interchangeably. Is there any difference the two terms, or is one of the terms subset of another?
0
votes
2answers
866 views

Send and receive phone call and SMS on a computer?

I am currently in mainland China, I want to send and receive phone call& SMS on a computer. I tried Google Voice as well as Skype. Their outgoing call is all right, but it seems impossible to get ...
2
votes
1answer
170 views

Which codec should I choose to work with in a VoIP project? [closed]

I would like to work with a codec in a project for the university. I'm interested in the VoIP telephone service. The idea is to implement the codec in a DSP and then characterize it. My question is ...
2
votes
4answers
14k views

How can I use a fax machine over WiFi?

I have a fax machine in a location that is accessible only through nearby WiFi. I'm in an unusual situation where it must be an ancient fax machine and not a nifty eFax solution (much to my chagrin.) ...
0
votes
1answer
1k views

How can I stop Raid call from loading when I start my computer?

Every time I boot into Windows, Raid call automatically starts. Is there a way to stop Raid Call starting whenever I boot up my computer?
1
vote
1answer
1k views

Asterisk Has Consistent 100% CPU Load On One Core

http://i.imgur.com/sySQfsH.png Please note the screenshot. I have an Ubuntu 12.10 box running Asterisk. I ssh'ed into the server the other day to find asterisk running at 100% CPU on one core, and i ...
1
vote
0answers
465 views

how to reduce h264 annex B NAL unit sizes to avoid IP fragmentation?

I'm trying to stream a video over to a terminal using RTP. The video is coded in h.246. I'm using ffmpeg to extract the byte stream according to h.264 annex B : ffmpeg -i test.h264 -vcodec copy -vbsf ...
0
votes
1answer
206 views

Will I need to put a filter between a ADSL router and a phone?

I have a Naked ADSL connection (no dial tone, connects to ADSL internet only) with an ADSL router plugged directly into the wall. All calls are made using the VOIP ports on the ADSL router. Should I ...
0
votes
1answer
101 views

Do I need to subscribe to a VOIP service if I have a VOIP server configured?

VOIP has caught my interest today as it seems to be a great solution for somebody who travels frequently and needs to make cheap/free calls from wherever. I know I can setup my own PBX server with ...
0
votes
1answer
419 views

VOIP (Skype, Lync) 'stutters' with my ISP. How can I prove it?

When I am on VOIP calls (Skype or Lync) most of the time the calls suffer quality issues where the person on the other end cuts out. 4 perfect seconds, then 1 to 1/2 a second of what the other person ...
1
vote
3answers
1k views

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 ...
-2
votes
1answer
747 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 ...
1
vote
1answer
198 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 ...
2
votes
0answers
99 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 ...
0
votes
2answers
628 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 ...
1
vote
1answer
455 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. ...
0
votes
1answer
191 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 ...
0
votes
2answers
369 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 ...
0
votes
1answer
239 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 ...
1
vote
1answer
513 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 ...
0
votes
1answer
298 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 ...
0
votes
1answer
134 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 ...
0
votes
1answer
416 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
3
votes
2answers
454 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 ...
1
vote
0answers
165 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 ...
2
votes
1answer
340 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!
0
votes
2answers
306 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 ...
0
votes
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
1
vote
1answer
112 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 ...
0
votes
2answers
64 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 ...