Telecom Pages

This site provides a technical resource for telephone engineers.

I welcome input from anyone who wishes to contribute, however please stick to the subject matter or your efforts will simply be deleted.

I hope that you find this site useful

Enjoy

cmac

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ISDN Cause Codes

Q.850 Q.850, an ITU-T specification defines the usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN ... Read more

Chris McAndrew 23 Jul 2010 Hits:1121

A Two Minute Explanation Of Phreaking

Phreaking is a term used to describe the activity of people who study, experiment with, or explore the art and science of hacking telephone network security. As telephone networks become more computerised,... Read more

Chris McAndrew 13 Jul 2010 Hits:798

Defence In Depth

Kevin Mitnick on security; 'A lot of businesses out there don't see the return on investment, they look at it as a liability, and until they can understand that proactive security actually returns,... Read more

Chris McAndrew 13 Jul 2010 Hits:1029

VoIP Security

Businesses which are implementing VoIP (Voice over Internet Protocol) in an attempt to reduce communications costs should not overlook the VoIP security risks which can arise when the voice and data worlds... Read more

Chris McAndrew 29 Aug 2010 Hits:590

PBX Security At Mitel

Security of IP Telephony communications is very important for you and your business. Mitel recognizes and addresses this with measures to protect business communications from PBX security threats today and ongoing diligence... Read more

Chris McAndrew 28 Aug 2010 Hits:895

X-Lite Softphone Configuration Examples

The examples provided below were tested and known to be correct at the time of writing; however, they are subject to change at any time. If you have the configuration examples for... Read more

Chris McAndrew 27 Jul 2010 Hits:822

SecureLogix PBX Firewall

With PBX security issues taking greater focus as VoIP technology gains ground in corporate voice networks, telecom managers can help to secure their networks against Telephone System Hacking with a PBX firewall.... Read more

Chris McAndrew 12 Jul 2010 Hits:881

Mitel and SIP

Session Initiation Protocol (SIP) is the protocol of choice for setting up telephony, multimedia, conferencing, and other advanced communications sessions via the Internet – enabling a new generation of applications and services... Read more

Chris McAndrew 28 Aug 2010 Hits:896

Public DNS Servers

The most basic task of DNS is to translate hostnames such as telecompages.co.nr to IP address such as 74.86.49.131. In very simple terms, it can be compared to a phone book. DNS... Read more

Chris McAndrew 22 Jul 2010 Hits:538

Public STUN Servers

                                            A number of Public STUN servers are available to help you get SIP calls through NAT   Read more

Chris McAndrew 22 Jul 2010 Hits:1435

Free SIP Trunk Providers

The following is a list of ITSP's (Internet Telephony Service Providers) which provide FREE SIP Trunks.   You will still have to pay for outgoing calls - but the trunk is free, SIP to... Read more

Chris McAndrew 23 Jul 2010 Hits:1044

Control Phreak PBX Firewall

Phreaking, telephone system hacking, dial-through fraud, and toll fraud are the illegal and unauthorised access by criminals often with links to terrorists to your phone system to route their own call traffic... Read more

Chris McAndrew 13 Jul 2010 Hits:920

What Is Toll Fraud?

Toll fraud (sometimes referred to as ‘Theft Of Service’) describes a crime where an individual or organisation devises methods to breech PBX Security and gain unauthorised access to PBX resources, including the... Read more

Chris McAndrew 28 Aug 2010 Hits:686

SIP Security

SIP security is a huge and challenging field. Authentication: Can users steal other users identity? Confidentiality: Is someone else listening on your SIP... Read more

Chris McAndrew 29 Aug 2010 Hits:601