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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Jitsi and Telekom Germany - outgoing calls “Call failed - Not Acceptable”

I am trying to configure Jitsi to operate as a softphone for my Telekom Germany VoIP-connection. So, I went to the website of Telekom Germany, which provides the following details for connecting: ...
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1answer
76 views

Do FreePbx need VPN for connection?

I heard about that PBX (like freepbx, elastix, etc...) need a VPN to users connect to it. if is it true, why it needs? if so, how can I do not use it in the user client? any alternatives? i heard ...
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0answers
74 views

Asterisk server asks peer on other server to Authenticate

I am trying to have an SIP peer on one asterisk server call an SIP peer on another asterisk server. I have SRTP enabled between the two servers not the SIP clients. When I initiate the call, i.e SIP1 ...
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2answers
2k views

Failed to authenticate SIP peer

I am trying to connect an SIP peer using Zoiper to my asterisk server. The peer is a soft-phone on my server. I have the following config for the peer: [201] disallow=all allow=alaw host=192.168.1....
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1answer
47 views

What's Lax and Lax2 protocols?

Are LAX and LAX2 communication protocols like SIP? What are these? Some telephone systems support them beside SIP but I cannot find information on google
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2answers
95 views

Why do Ekiga touchtones only work with the RFC2833 setting?

I have Ekiga acting as a softphone for my VOIP account. I made a call to an automated switchboard which required me to "press 2 to continue". I attempted to press "2" on the keypad pane but the DTMF ...
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1answer
254 views

Does AT&T U-Verse phone service cause problems with modems?

I have landline phone service with ATT Uverse. My router is a 2wire, and when I go to the router homepage, I see something that says the VoIp service is either idle or active. I also have a modem in ...
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1answer
130 views

Connect LAN-device to iMac socket and have internet (through WiFi) on LAN-device

I have an iMac which has internet through WiFi. I also have a VOIP-phone with only a LAN socket (no WiFi adapter availalble). I would like to connect my VOIP-phone to the LAN outlet on my Imac, and ...
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0answers
245 views

How do I connect my D-Link DIR-605L wireless router to my TP-Link TL-SG2424P PoE switch?

We connect to the Internet via our D-Link DIR-605L wireless router. We just bought a TP-Link TL-SG2424P PoE switch to power our new VoIP phones and connect them together. (Our wireless router will ...
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1answer
34 views

server with multi purpose possible?

I would like to have the following 3 uses available to me. Accessing my files within and outside my network Game servers occasionally; Minecraft or Gmod (as example) Teamspeak 3 Is it possible to ...
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0answers
410 views

internet traffic slow through switch; VOIP issues too

There's already a post about this, but the solution to that one didn't work for me, so here's my version: We have Cox cable internet, 100mbps | We have a Sonicwall TZ 215w | We have a netgear L2 ...
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1answer
204 views

No audio after SIP reinvite

I am trying to get a Gigaset C470 IP to work on my Internet connection. I have figured out the correct configuration for the device and my router (a pfSense sitting between the DSL modem and the LAN) ...
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1answer
169 views

Bluetooth headset does not switch to VoIP

I ran into a problem when using my Bluetooth headphones on Windows 7. They support both the A2DP and the Hands-free profile, however it seems that only one of them can be active at a time. On my ...
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0answers
56 views

Ekiga softphone shows as “registered” — but is it actually?

Is Ekiga actually registered? How would I know? I think Ekiga connects, or at least it says "registered": But, when I exit Ekiga, and use SFLphone, it fails to register: While sipsak shows a ...
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1answer
121 views

topology for an unmanaged switch (firewall)

I'm considering an unmanaged switch. My understanding is that many of these devices explicitly lack a firewall. In that case, what do you use as a firewall? I suppose one option would be to use a ...
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0answers
179 views

Error: “Channel not in Stasis application” when adding channel to a bridge

I'm working with Asterisk ARI. When I create channels via ARI, I specify application name and I can add those channels to a bridge with no problem. But when I use other client (like Zoiper) to make ...
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1answer
16 views

VoIP Phone Reboot Leads to Internet Access? [closed]

So this isn't really an issue about not having access or anything but rather as to why this issue was resolved with the method I used. So in the morning, I tried to connect to the internet but I ...
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1answer
1k views

VOIP Fax + Raspberry Pi

I just moved into a new office and don't want to get a landline phone. I'd kind of like to set up an Asterisk box and use Google Voice as my service provider. The main things I'd like to have are: ...
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1answer
324 views

Separate VoIP traffic from Data traffic on a computer that has a softphone

I have been entrusted recently with a task that seems a bit more complicated than I initially thought. I would have asked Google, but I can't quite formulate the right question using just a few words....
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1answer
316 views

Asterisk Ivr menu mysql build

I would like to implement an IVR menu to see if the call comes in and announces a text waiting 6 numbers. Then the number 6 is controlled by a MySQL database. If "Active" or "Valid" the status will be ...
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1answer
216 views

How to “hide” VoIP traffic?

I'm pretty soon gonna be punished by my telecom operator for using WhatsApp,Tango,Skype etc. From now on not only will I be charged for the 3G Connection that makes services like WhatsApp,Skype etc ...
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0answers
740 views

Ubuntu + Asterisk = Registration from '“100” failed for '10.0.83.202:51966' - Wrong password

I have set up a simple Ubuntu 14.04 just installing Asterisk (apt-get update && apt-get upgrade && apt-get install asterisk). When I try to log in from my client (Telephone for OS X) ...
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1answer
370 views

Plivo SIP problems with NAT traversal

Ok, I've looked and looked, and can't seem to find anyone that's written about this problem. I have a simple office setup where there are two SIP phone extensions (Polycom 331) behind a Sonicwall ...
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1answer
286 views

Can Asterisk accept and send SMS?

Is it possible to send and receive SMS over Asterisk? I am using Asterisk for my communications and it works pretty good. I just wish that I could send SMS to my callers. thanks
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1answer
28 views

Discovering the VoIP connection parameters for CISCO 7961

Not sure this question belong here, please redirect me to somewhere else in case. I've a CISCO 7961, a VoIP phone, which receive its configuration from a company central server. I asked the IT people ...
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1answer
4k views

How to configure linphone for video calls?

I’m trying to enable communications between the following clients: Nortel IP phone 1535. Linphone 3.7.0 running on FreeBSD. Linphone 3.7.0 running on iPhone (Linphone iPhone 2.2.3). The good part ...
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1answer
430 views

Freepbx outbound calls through an FXO device (Grandstream GXW4108)

Im trying to use GXW4018 fxo gateway with freepbx. Inbound calls work as expected but outbound calls doesnt. Outbound calls work but i cant seem to be able to force an extension to dial out with A ...
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0answers
456 views

Assistance needed install UCT IPTV AS (UCT Advanced IPtv)

My IMS system have 6 component : P-CSCF S-CSCF I-CSCF HSS Media Broadcast Server UCT IPTV (UCT Advanced IPtv) as server Each component run in each IP. But I can’t install the last component UCT ...
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1answer
2k views

Android won't register SIP on FritzBox router

In the past I've used VoIP/SIP apps to call from my Android phone. Recently I got the upgrade to Android KitKat (4.4.x) and I've noticed that it includes SIP accounts natively (accessible through ...
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1answer
971 views

Reboot or restart Polycom SoundPoint IP 335 from command line

I have 4 Polycom SoundPoint IP 335 IP phones. Just wondering if anyone knows if these phones can be restarted/rebooted from a command line. They all have static IP addresses. I do have access to ...
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0answers
334 views

FreeSWITCH simple configuration for audio call between two computers

I have two computers and I want to make audio calls between them. Each one of them is behind a different NAT. I am an absolute beginner and I have no idea what I need to configure. After reading and ...
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122 views

Digium card shows green and red light after each second after configuration

My digium card and pri was working fine in other system but i removed and installed that digium card in other system .I have configured it but its showing only 24 channels but i have 30 channels .My ...
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1answer
2k views

Cisco VoIP phone - Strange behavior after router reset

We're an IT company based in London, but one of our clients is in New York. They have a Cisco SPA504G VoIP phone connected via a set of net gear power lines, and then to their consumer router (Arris)....
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1answer
85 views

Where or how do I register a new phone number intended to be used with voip? [closed]

Ok I'm not sure if this is the right place to ask. Goal: Have a voicemailbox with multiple phone numbers. 1 in each continent. Example: +1123456 -> voicemailbox +49123456 -> voicemailbox The scope ...
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1answer
433 views

How to break Lync / Cisco IP Softphone interaction when placing a call from Lync?

I have the following VoIP configuration on my Windows 8.1: a Lync 2013 client (connected to an OCS server) Cisco IP Phone (for PSTN calls) a speakerphone (speaker & microphone, namely a Jabra ...
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1answer
296 views

How configure 2 Lan cards in Windows 7/8 pc one to connect to Internet and other to Local Network

    I am about to install a dedicated VOIP server in our office. It is a 3CX pbx system on Windows 7/8 machine. The environment currently is a Windows SBS 2011 with 8 client machines. I want ...
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1answer
3k views

Voip phones losing registration from external SIP PBX

This has been a pain. My polycom voip phones (about 10 of them) are all losing registration every few hours. Each time I check them, some will be registered and some will not. Rebooting my firewall ...
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1answer
190 views

Why a DNS server on an ATA?

I was portscanning this home network from the outside and found three open ports: telnet(!), http and domain. I quickly realized that those ports were belonging to an Eltek R7121-L1 ATA that is ...
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1answer
259 views

Creating an outbound call center software in asterisk [closed]

I an outbound call centre as i know the server calls a person and connect the call to the executive.Executive via headphone attached to a system directly talk to the person means there is only one ...
0
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1answer
622 views

Asterisk server firewall script allows 2-way audio from incoming calls, but not on outgoing?

I'm running an Asterisk PBX on a virtual machine directly connected to the Internet and I really want to prevent script kiddies, l33t h4x0rz and actual hackers access to my server. The basic way I ...
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1answer
391 views

Identifier 2, identifier_type 2 not found in identifier list

I am using asterisk 11.9.0 and created a dialplan.My problem is that everytiime i perform an sql operation its working fine but the line same => n,mysql(clear ${resultid}) is giving a error ...
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1answer
80 views

Why use a PCI System Timer?

I have heard it said that servers serving VOIP services such as Asterisk should use a PCI System Timer. Why? Nowhere is this ever explained, and googling reveals no clear use-cases for the device. ...
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1answer
16 views

Can you automate change of settings for all phones?

Is it possible to automate the process of changing some settings for VOIP phones running on Asterisk PBX? i.e. I have 10 phones connecting to PBX at all time. 5 of those phones are at one customer ...
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1answer
208 views

Why isn't my router allowing my PAP2T to connect to my VoIP service?

My tech knowledge is middle-low: as you can see I'm not shy about getting into the interfaces for my router, but have no idea what the more complex settings mean. I got a new wireless router (D-Link ...
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0answers
20 views

Using an existing telephone system with Skype home service [duplicate]

I'm interested in migrating my current telco-based phone service to a more affordable VOIP solution. Because of this, I've decided to settle on Skype, which I've used for years and has been my choice ...
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3answers
2k views

Skype shows I'm online when I don't have any Skype instance running

Recently Skype shows me as online to my contacts even when I do not have any instance of Skype running on my desktop I signed out of Skype on my mobile Apparently, this is a feature not a bug. ...
2
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1answer
470 views

Why my outgoing VoIP calls are sometimes that bad?

I have a Cisco SPA122 ATA Router in Bridge mode where I connect my analog phone. Turns out that usually on incoming calls, I don't have any issues: connection goes smoothly, the caller hears me ...
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1answer
600 views

Websockets on Kamailio + sipml5 + rtpproxy-ng + jitsi

I need quick help with pointing direction on what I should look at - I got Jitsi with Kamailio up and working both signaling and RTP streaming now I got Kamailio with ws:// setuped and sipml5 working ...
2
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3answers
8k views

Skype cutting out and skipping my voice

In Skype calls, sooner or later my voice starts cutting in and out; mid sentence my voice will go silent for several seconds, with no quality loss outside of the cut out. Sometimes instead my voice ...
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0answers
182 views

Stream windows audio over network and send back mic sound

I am a little lost as to how I go about implementing this kind of setup... We use SIP Softphones in our office, I would like to be able to, from another computer on the network, listen into the call ...