Voice Over IP
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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).
Trying to find out what could be the best solution for this setup.
Phone Polycom VVX300
We will be implementing VoIP in our offices. Actually, …
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?
I would like to make regular backups of the VM or the entire ESXi. What are the common
methods for backing up?
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?
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.
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…
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?
My VOIP provider has an API that allows me to start a call by calling a URL from my desktop.
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.
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…
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?
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.
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…
I am looking to buy the following wireless headset and handset lifter (https://www.amazon.com/Pl
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…
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 …
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 …
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/…
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…
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…
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…
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…
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…
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…
In my office we had 10 Cisco 7940G IP phones that were useless as they were showing PROTOCOL APPLICATION INVALID when started. I searched through Google and worked for a week …
I recently purchased a Bluetooth headset called the Music Jogger (model BSH10). The control buttons on it look like this: One of my goals is to use it as the microphone and speakers f…
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Andrew Hancock (VMware vExpert / EE MVE)
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