Configuring VoIP Phones in Cisco Packet Tracer

Please read the below command .

DHCP server on RouterA (2811 router) :

ip dhcp pool VOICE
option 150 ip

Configure the Call Manager Express telephony service on RouterA .
max-ephones 5
max-dn 5
ip source-address port 2000
auto assign 1 to 6

Configure the phone directory for IP Phone 1

ephone-dn 1
number 123

ephone 1
device-security-mode none

type 7960
button 1:1


Askozia PBX tutorial: external pfSense firewall for VoIP

This recording has been uploaded by

VoIP offers many new features in comparison to ISDN and analog. However, as your IP phone system is now part of your IT infrastructure, VoIP is also affected by some risks that haven’t been existing for traditional analog and ISDN phone systems. If a network component is successfully attacked, the whole IT network infrastructure can be in danger. This now includes your IP telephony infrastructure. In this webinar recording, we explain why a firewall is a must-have, and how to connect a pfSense firewall with AskoziaPBX.


Pros and Cons of “VOIP” or Voice Over IP Internet Telephone Service

Provided to YouTube by CDBaby

Pros and Cons of “VOIP” or Voice Over IP Internet Telephone Service · Worth Godwin Computer Training

Computer Basics: Understanding the Internet – Computer Terms & Concepts in Plain English

℗ 2010 Godwin Productions LLC

Released on: 2010-09-12

Auto-generated by YouTube.


Digium A-Series IP Phones for Asterisk | The Best Value for Your Asterisk Phone System

The All-New Digium A-Series Phones for Asterisk are budget-friendly IP phones from the company who brought you Asterisk!

Featuring full-color display, HDVoice and multi-line functionality starting at $59 USD. Digium A-Series phones are the best value for your custom business phone system.

The best-value A20 phone has 2 line keys, a 2.8 inch color LCD screen and features a list price of $59 USD.

The best-value gigabit A22 phone has 2 line keys, a 2.8 inch color LCD screen, and features a list price of$89 USD.

The A25 phone has 4 line keys, 2 color LCD screens, up to 30 rapid dial entries with a list price of only $119 USD.

The A30 phone has 6 line keys, a 4.3 inch color LCD screen, up to 45 rapid dial entries and has a list price $169 USD.

Learn more about the all-new Digium A-Series Phones for Asterisk by visiting


How to Make Free VoIP Calls with Tpad

How to Make Free / Low Cost Calls anywhere in the World with Tpad:

1. Create a Free Tpad Account –

2. You will then receive your Tpad VoIP / SIP Details including your very own Internet Telephone Number. e.g. 1700012

3. Enter your account details into any VoIP Device (Softphone / IP Phone / ATA / WiFi Mobile or any Mobile using the Free Nimbuzz or Fring Software)

4. Download Free PC Softphone / Dialler (Xlite / Ninja / ZoIPer / SJphone):

5. Make a Free Test Call anywhere in the World – dial in full international format (00+Country Code + Area Code + Number) e.g. 0092800666666

6. Buy Tpad Card / Call Credit without Credit Card, just using cash from cashu or Ukash:

Pakistan Special Offer, call Pakistan for only 3 cent USD$ per minute:

Buy Credit using Moneybookers / Paypal / Google checkout / Ukash / Cashu / Credit Card – login to your account and select buy credit

7. You can then dial any landline / mobile in the World. (00+Country Code + Area Code + Number) e.g. 0092800666666

8. Get your friends to join Tpad for Free and then you can ring each others Tpad Telephone Number (SIP) for Free no matter where they are in the World.

Other benefits of Tpad:

How to use your Mobile with Tpad using Free Fring Software:

How to use your Mobile with Tpad using Free Nimbuzz Software:

Tpad International VoIP Rates:

VoIP Device Setup Guides:

Free VoIP Softphones for your PC (turn your PC into a 2nd phone line):


Panasonic KX-TGP500 VOIP RingCentral Setup – Cordless VOIP Phone – Wireless IP Phone

This is my 3rd attempt at getting a Wireless / Cordless VOIP Phone for RingCentral.

The first two were:
Yealink YEA-W52P

Which was mediocre in all aspects and had terrible battery life.

Then I tried the:
Gigaset GIGASET-C530IP

This device was actually decent but after 5 months it would no longer recognize the base. After trying all fixes / resets / hard resets, it still did not work. When I first purchased it, the device found the base without any issue. Its hard to rely on a device that does something like this.

So here I am at my 3rd attempt with the: Panasonic KX-TGP500

So far so good and was the easiest setup of all 3.

Panasonic KX-TGP500 SIP DECT Phone System Ringcentral setup configuration.
Panasonic KX-TGP550 SIP DECT Phone Ringcentral setup configuration.
Panasonic KX-TGP600 SIP Dect Base Unit & Cordless Handset Ringcentral setup configuration.

-The SIP Cordless Phone System expands up to 6 additional TPA50 handsets.

-Support for up to 8 SIP registrations.

-The KX-TGP500 SIP Cordless Phone System allows you to have up to eight (8) phone numbers.

-2.1″ Large LCD with white back light on cordless handset.

-Support for 3 simultaneous network conversations.