Voice Over IP

8K

Solutions

10

Articles & Videos

6K

Contributors

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).

Refine results

Hi experts.

Trying to find out what could be the best solution for this setup.
SonicWall TZ300
D-Link DGS-1210-28P
Phone Polycom VVX300

We will be implementing VoIP in our offices. Actually, …

621 views
Highfive Gives IT Their Time Back

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Goal is to move Publisher CUCM 10.5 from one data center to another. The IP address ranges in the new DC would be different. What would be the easiest way to migrate?

24 views

I would like to make regular backups of the VM or the entire ESXi. What are the common
methods for backing up?

228 views

I have Cisco 7821 MRA phones for my remote users. Do they have any technologies which help overcome the variability of voice performance over the Internet?

428 views

If you have the password to be able to SSH to a CUCM, will those same credentials work in the GUI for
Disaster Recover, Prime License Management, OS Administration? Thank you.

210 views

If you have a CUCM 10.5 which is showing that you're you're operating with insufficient licenses - could it be the case that long un-registered phones are causing the over-limit condition? Or do unreg…

29 views

I have the uid/pw for the ccmadmin/servicability. But for OS administration, Cisco Prime on thepublisher and DR it appears lost to the winds. Is there a recovery procedure for those?

212 views

My VOIP provider has an API that allows me to start a call by calling a URL from my desktop.

http://api.maxo.com.au/pages/na.php?v=99&action=initiatecall&fromextension=nnnn&callto=<phone number her…

429 views
Sennheiser

This paper addresses the security of Sennheiser DECT Contact Center and Office (CC&O) headsets. It describes the DECT security chain comprised of “Pairing”, “Per Call Authentication” and “Encryption”, which are all part of the standard DECT protocol.

0108 views

Hi My company added a couple of SIP lines to our MX box (Zultys MX 250). We ordered a separate cable modem and 7Mbps/768k plan from Time Warner and have the modem plugged directly into the MX box. Eve…

463 views
Find Ransomware Secrets With All-Source Analysis

Ransomware has become a major concern for organizations; its prevalence has grown due to past successes achieved by threat actors. While each ransomware variant is different, we’ve seen some common tactics and trends used among the authors of the malware.

I'm researching VOIP solutions for our company's two locations (50 users + 50 users) connected via WAN link.

1. What are the top 3 or 4 providers of cloud VOIP I should investigate and consider?

1253 views

Does anyone know of a way to dial toll free from the Philippines to the United States? I just need to make a minimal call - about 1-2 a month for less than 5 minutes each.

230 views

Hi

Need some guidance on this please.  Have a Small Business edition shoretel setup, running HQ, SG90, SG90BRI, E1k and an ingate siperator.

We've migrated the internet and replaced the firewall…

1041 views

I am looking to buy the following wireless headset and handset lifter (https://www.amazon.com/Plantronics-CS540-Wireless-Headset-Handset/dp/B006GQHRU8/ref=sr_1_2?ie=UTF8&qid=1479341394&sr=8-2&keywords…

526 views

We are experimenting with deploying a VOIP system at a secondary office of one of our clients. This office is linked to their main network by a persistent VPN setup between their Watchguard routers. W…

431 views

Hi Experts,

I am implementing a new Avaya VOIP system. The main IP Office is equipment are in the main office. I have some remote locations that are configure with Site to Site VPN connection back …

425 views

hi EE folks

for some reasons i am looking for a device that can allow me to remotely access my land line at home across the internet, including making outgoing calls and ideally receiving incoming …

1967 views

I'm running Ubuntu and I've just upgraded and applied all the patches to 15.10.
I used to run this line with no trouble at the end of an asterisk call:
exten => s,n,System(/usr/bin/lame -B 16 /var/…

1935 views

Currently I have a client that is in dispute with their vendor that provides their Internet and phone. The dispute is over billing. Is there anyway to port their numbers over to another vendor or do t…

335 views
How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

They are brand new and should work fine as I already have them verified by my Windows 7 64-bit. And when I turn the headphones on, it says "Bluetooth mode". But I still can't hear anything in them. Wh…

952 views

My SBS 2008 server security event log is showing about 10 audit failure pairs per second - events 5152 and 5157. One pair of the log entries is shown at the bottom of this post. I don't see any extern…

2179 views

Hello EE,

We are rolling out Single Number Reach and soft phones to a group of users to test.
I am wondering as we want valid feedback if anyone has any survey templates already that ask the quest…

444 views

Hello

We are currently using a mobile platform called Good for secure mail on personal devices.

We are also speaking to Microsoft about deploying a Skype mobile client on personal devices for c…

146 views

I am in a town that has the core phone system with call manager and call routers; some sip and some analog. One of the remote states uses our call manager/unity. I do not know how to identify or locat…

735 views

Hi,
I'm looking to see if it's possible to swap out my analog phone with a Cisco IP Phone (E.g. Cisco 8851). I have a home office and only have a analog phone line coming in through Time warner cable…

852 views
Show more content
201506-LO-Top-001

TOP EXPERTS

view all

RELATED TOPICS view all topics

  1. IP Telephony
    (6,480)
  2. Telecommunications
    (5,234)
  3. Routers
    (46,908)
  4. Networking
    (89,128)
  5. Switches / Hubs
    (20,860)
  6. Cisco
    (22,618)
  7. VPN
    (23,353)
  8. Exchange
    (195,946)
  9. Networking Hardware-Other
    (27,090)
  10. Hardware Firewalls
    (23,212)