Welcome to my new site - VoIP Security

The main idea is to carry on from my old site (Telecom Pages) and offer help and advice, where possible, to anyone involved in the telecom trade, particularly the ones involved with Mitel equipment.

However, in view of the recent increase in people hacking into Business Telephone Systems and Voicemail / IVR systems I have decided to bias this site toward security issues and vulnerability analysis, hence the name change to VoIP Security.

At the moment all the work on this site is my own but if anyone feels that they would like to contribute just drop me a line.



 
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Digital Trunk Problems

Digital Trunk Problems

The following problems can occur with digital trunks. Excessive Bit Error Rate Make sure the system is programmed the same as for the...

Analogue Trunk Line Conditions

Analogue Trunk Line Conditions

Analogue Line Conditions Idle In this state no calls are in progress and there is no ring signal present. A nominal 50 volts DC can be measured on the line. Off-Hook condition The...

How to trace a call in progress

How to trace a call in progress

The RESOURCE command can be used to find out what trunk a specific call is on, but in order to use the resource command you first need to know...

PBX Security Checklist

PBX Security Checklist

A PBX is a private telephone switch that serves extensions in a business and provides access to the public switched network. If the PBX system is not maintained and secured,...

ISDN Cause Codes

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 User Part. Cause No....

How to make an Mitel 3300 E2T Cable

How to make an Mitel 3300 E2T Cable

The Mitel 3300 E2T Debug cable, sometimes referred to as a Mitel 3300 TAPI cable, turned out to not be as readily available as we were led to believe. ...


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