IP Telephony

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IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

Related Topics

  1. Voice Over IP
  2. Telecommunications
  3. Routers
  4. Networking
  5. Cisco
  6. Linux
  7. Switches / Hubs
  8. Exchange
  9. Networking Hardware-Other
  10. Chat / IM
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We have a small network of 12 computers all Windows 7Pro on a Windows 2008 SBS server.  We have Comcast business internet with 1 public static IP that is used to point phones and MX records and remote…

2775 views
Free Tool: Port Scanner
Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

I have a sound bite (< 30 seconds) that I want to send to my wife for her to use as a ring tone on her iphone.  We don't ever sync to itunes.

I have it as an mp3.  I used itunes on my win pc to …

1013 views

have a new polycom vvx410 with the latest firmware and need to simply set a parameter to 1.

voIpProt.SIP.header.diversion.enable="1"

cant find the setting in the web interface, so i exported the…

320 views

Got a weird issue.  I have a toll free number that I’m forwarding to a cti route point that goes to a group voicemail in unity.  If I call the local number the toll free routes to, I get the …

219 views

I support a remote center that has phone over a PRI line. At the moment, no calls can go in or out. When I look at the router, Cisco 2901, there are no recent errors on the line, but the output for …

837 views

I have a block of phone numbers with my SIP service provider. Over the last few years we have laid off quite a few people. These people were deleted from the SfB server but their extension was not …

436 views

Hello Guys,

I am looking expert  advice / help if some one can tell me how  I can enable the voice mail box in unified messageing environment.
I have all ready done following steps.
1.new mail …

3105 views

Assuming you have multiple Call Managers on the Cisco side and multiple Lync Front End servers - is it possible to configure things so that calling can continue to work even if one Call Manager goes …

234 views

As I understand it, some SIP phones and conferencing equipment has built in connection quality analysis but in this case, nothing being used seems to have such capabilities I'm told. That isn't the …

892 views

QoS is new to me.  I'm just trying to get a better understanding of my options before I learn how to implement it.

I have some voice servers located in a data center.

I have several small/medium…

754 views
Efficient way to get backups off site to Azure
Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

will be setting up my own pbx (piaf/3cx).   will either use anveo direct, voip.ms, or cc for incoming and outgoing calls.  

right now just have our plain old internet connection (50 down, 5 up).

652 views

I am using a webbrowser phone to make outgoing calls. I would like to use it when I click on a phone number link in a webpage. In the registry I have changed HKEY_CLASSES_ROOT\tel\shell\open\command …

375 views

It seems that when end users are trying to get into their own voicemail or leave a voicemail for another extension, it is timing out. Either the VM box does not pickup or rings indefinitely.

1634 views

I'm new in VOICE.
I'm using Cisco Unity Connection, client requested to change an extension to a different users.

549 views

We are running CUCM 10.5 as a VM on a UCSC-C240 - eight of these. It seems like I should be able to snap shot a UCM VM from one of the ESXi to another. But each is managed individually. If there was …

361 views

Attached is the sh tech from the router, also attached is the sh run and sh policy-map for the interface in question, basically we want to confirm the QoS policies we have currently configured, we had…

195 views

Hello Experts - I'm preparing my network for a new VoIP phone system from 8x8 and have been running into a problem during testing.  One of the tests checks to see if SIP ALG is disabled and I am …

4107 views

I have a SonicWALL NSA 250 in front of my network which includes TalkSwitch phone system. My SIP service provider is NexVortex.  This setup has worked fine for at least the last 5 years and probably …

4113 views

I am looking for suggestions for cloud or self hosted VOIP based ONLY on your recommendations of actual use or your own client's experience if you assisted or manage installation/usage.

Currently …

591 views
Networking for the Cloud Era
Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

When you use Office 365 for voice - I imagine your call setup is all done via client conversation to the MS PBX in their public cloud. But say you want to talk to someone in your own office a few …

394 views

We are launching three remote sites within next 3 years. I am wondering what will be the best option for phone system.  We currently have Shoretel Onsite, and going with Shoretel Hybrid or Online is …

999 views

I have a remote site which will have just a T1 of bandwidth for VOIP. Most of the time that will be more than enough to handle calls from a small office. But I was thinking that if a phone needs to …

259 views

Hello Friends,

I am running with Cisco UC560 as a telephonic system for my company.

Currently requirement is to restrict outgoing calls made to any mobile with pass-code.

So if any users …

2106 views

I downloaded from CUCM 10.5 plugins CcmServRtmtPlugin.exe. When I try to run as administrator on Win7 I get:

Error: Could not create the java virtual machine
Error: Fatal error has occurred.

587 views

Hello Experts - We are going to be installing a new VoIP phone system from 8x8 in a couple of months and I wanted to see if I could get some guidance on changes I should be considering for my …

4234 views
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IP Telephony

6K

Solutions

9

Articles & Videos

4K

Contributors

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

Related Topics

  1. Voice Over IP
  2. Telecommunications
  3. Routers
  4. Networking
  5. Cisco
  6. Linux