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Tag: VoIP 19 posts
This page compiles all of our content related to VoIP, including Cisco resources such as a Voice certification guide, and Cisco Unified Communications Manager videos and how-to articles. Please take a look at our FreeSWITCH configuration series.
How to Install Cisco Unified Communications Manager
By Sean Wilkins ⋅ September 7, 2011 ⋅ Post a comment
The installation of the Cisco Unified Communications Manager (CUCM) can seem like a daunting task. This article takes a look at the basic steps required to install the base operating system and the CUCM application on a new device.
How to Configure FreeSWITCH on Windows Part 3
By Stelios Antoniou ⋅ August 31, 2011 ⋅ One comment
Our FreeSWITCH configuration series has reached it’s final stages. In this how-to you’ll learn how to configure your three FreeSWITCH dial-plan xml files: Public.xml, Default.xml, and Features.xml files so your PBX has the information for routing and terminating calls.
Introduction to Cisco Unified Communications Components
By Sean Wilkins ⋅ August 24, 2011 ⋅ 2 comments
Learn about the five most commonly used Cisco Unified Communications Components: Cisco Unified Communications Manager, Cisco Unified Communications Manager – Express, Cisco Unity Connection, Cisco Unity Express and Cisco Unified Presence.
How to Configure FreeSWITCH on Windows Part 2
By Stelios Antoniou ⋅ August 24, 2011 ⋅ 2 comments
As we continue our FreeSWITCH configuration series, learn some basic CLI FreeSWITCH commands, how to configure your VoIP Gateway and the basics on Regular Expressions, which you’ll need to know before configuring your Dial Plan.
How to Configure FreeSWITCH on Windows Part 1
By Stelios Antoniou ⋅ August 17, 2011 ⋅ One comment
See how FreeSWITCH can fit into your network and what your basic configuration options are. We’ll go over how to create extension numbers, how to configure the Internal SIP Profile and how to test the client registration in FreeSWITCH.
How to Install FreeSWITCH in Windows
By Stelios Antoniou ⋅ August 10, 2011 ⋅ 2 comments
FreeSWITCH is an open-standards VoIP telephony platform that is easy to install, configure and work with. And best of all, FreeSWITCH is free. Learn more about FreeSWITCH and how to install it on Windows.
New Cisco CCNA Voice Certification Guide: Exam 640-461
By Sean Wilkins ⋅ July 11, 2011 ⋅ 3 comments
The CCNA Voice Certification has been recently updated and the new ICOMM 640-461 exam is the new requirements for the certification. Learn about the new exam requirements and some CCNA Voice study resources that will help you get certified.
Creating a Dial Plan with Cisco Unified Communications Manager Express
By Kasia Lorenc ⋅ June 9, 2011 ⋅ One comment
See what you need to know to create a successful Dial Plan using the Cisco Unified Communications Manager Express. In this video, CCIE Joe Rinehart covers the Dial Plan best practices and considerations you’ll need when creating your own Dial Plan using CUCME.
New Training Release: Cisco CCNA Voice Training
By Kasia Lorenc ⋅ June 7, 2011 ⋅ 2 comments
Looking for a way to set yourself apart from the competition? Want to advance your career, enhance your skills and increase your pay? The Cisco CCNA Voice Certification is in high demand and offers some great career benefits. Learn how you can get it.
How to Choose the Right VoIP Connectivity Solution
By Stelios Antoniou ⋅ March 30, 2011 ⋅ 2 comments
Ready to make the move to VoIP? Learn about what the different VoIP connectivity solutions entail and which VoIP solution is right for your organization. We’ll examine simple VoIP connectivity, traditional PBX connectivity and IP PBX integration in your VoIP solution.
How to Prepare Your Network for VoIP
By Stelios Antoniou ⋅ March 16, 2011 ⋅ Post a comment
Switching to VoIP (Voice over IP) can be a difficult task because there’s much to consider. This article will walk you through everything that you’ll need to consider before moving to VoIP including bandwidth, security, QoS, voice and data traffic separation, network resilience and high availability.
VoIP Architecture: VoIP Call Components
By Stelios Antoniou ⋅ June 23, 2010 ⋅ 2 comments
Last time we went over the VoIP essentials including the benefits of VoIP and the fundamental VoIP terminology as well as the VoIP Protocols Now is a good time to introduce all the components that make Voice over IP a reality. Without them, IP telephony as we know it today wouldn’t exist. In this article [...]
VoIP Signaling Protocols
By Stelios Antoniou ⋅ June 2, 2010 ⋅ One comment
Now that you’re familiar with the VoIP essentials we can move on to VoIP protocols which are detailed in today’s article. Next time we’ll cover the VoIP Architecture, how to prepare your network for VoIP and how to activate VoIP which will get you to a good start with VoIP. Introducing VoIP Signaling Protocols Today [...]
VoIP Essentials: The World of Packetized Voice
By Stelios Antoniou ⋅ May 11, 2010 ⋅ Post a comment
Welcome to the new world of Packetized Speech! The voice infrastructure has been rapidly evolving during the last few years. Moving from traditional circuit switching to the packet switching technology has not been easy. The Internet and IP networks had to cope with the reliability and excellence of service of the Traditional TDM networks. Lot’s [...]
Cisco CCNA Voice Certification Guide
By Jason Harry ⋅ April 19, 2010 ⋅ 2 comments
Thus far, I’ve written 2 certification guides based on the associate level exams from Cisco: Cisco CCNA Certification Guide Cisco CCNA Security Certification Guide Today, I’ll be continuing with another one of the CCNA concentrations: CCNA Voice. I will follow the same format as in my previous articles, where I provide you with a brief [...]
Cisco Certified Voice Professional (CCVP) Certification Overview
By Sean Wilkins ⋅ March 30, 2010 ⋅ Post a comment
With modern networks now having the ability to not only service your data requirements for surfing and getting email but also to fulfill your requirements for other services including voice, Cisco started the Cisco Certified Voice track. As with the other certification tracks, this includes an associate (CCNA Voice), professional (CCVP) and expert level certifications [...]
Cisco Call Manager Express IOS Feature for VoIP
By Stelios Antoniou ⋅ April 15, 2008 ⋅ 6 comments
Cisco Call Manager Express (CME) is an enhanced IP telephony solution that is integrated into Cisco IOS. It is an ideal solution for small business customers to efficiently use their existing IP data connectivity to incorporate the deployment of voice and IP telephony. Being able to support IP telephony and IP data traffic through a [...]
VoIP: How to Effectively Encapsulate Voice in IP Packets
By Stelios Antoniou ⋅ March 31, 2008 ⋅ 3 comments
VoIP converts voice signals from a telephone into digital signals that can be transmitted over the Internet. VoIP is becoming more popular every day. Nowadays it is common to find leased lines and VPN connections between company branches which are used to transport voice traffic in addition to data. However, voice has strict real-time requirements [...]
Session Initiation Protocol: the Right Choice for VoIP
By Stelios Antoniou ⋅ September 25, 2007 ⋅ 2 comments
Session Initiation Protocol (SIP) is a standard designed by the Internet Engineering Task Force (IETF) to serve VoIP services. It’s an application layer protocol that can operate over UDP (User Datagram Protocol) or TCP (Transmission Control Protocol). SIP, currently at version 2, is defined in RFC 3261. Simplicity and flexibility are the primary characteristics of [...]