ESS1 and 1A Switching Systems, researched and compiled by The Ninja Master
The Tao of 1A ESS, by Dead Kat and Disorder
AT&T 5ESS From Top to Bottom, by Firm G.R.A.S.P.
Specifications of Signalling System Number 4
Specifications of Signalling System Number 5
Specifications of Signalling System Number R1
AIS: Automatic Intercept System: The DIAS II System by Computer Consoles Incorporated
Analogue Signalling Systems - An overview by NeonDreamer
The Complete Guide to Definity G Series Systems AKA System 75 - 85 by Scott Simpson (June 18, 1992)
Introduction to the Automatic Voice Network (AUTOVON)
A Description and History of the AUTOVON (Automatic Voice Network)
The AXE 10 Subscriber Switching Subsystem, by Keltic Phr0st
BellCore Technical Journal: Introduction
BellCore Technical Journal: Electronic Switching System Faults
BellCore Technical Journal: Overview of Bellcore Metrocore Network
BellCore Technical Journal: Ethernet Fields
BellCore Technical Journal: ISDN C File
Bell Research Report (Vol I) by SSWC
Bell Research Report (Vol II) by SSWC
Basic Signalling, Part #1, by Asmodeus Rex
CCITT Underground Informations Part 1
Southwestern Bell's Call Control Options (May 14, 1991)
A Look at Central Offices, by Doctor Zerox, David Johns and GJC
Centrex Renaissance: The Technology, by John D. Bray, from Jester Sluggo
Centrex Renaissance: The Technology (October 1985) typed by Jester Sluggo
R.O.L.M. Sorcerer XII: The PBX Remote System Control, by The Conflict of CHiNA
Custom Local Area Signalling Services by The Videosmith Version 1.1 (1994)
Information on CLASS; Custom Local Area Signaling Services
A Comprehensive Look at Switching Systems by Terminus
Custom Local Area Signaling Services (CLASS) information from Bell
Circuit Switched Digital Capability by The Executioner of PhoneLine Phantoms
Digital Multiplex System (DMS) 100 by Knight Lighting of the Metal Shop AE
Digital Multiplex System (DMS) 100 by Knight Lightning
Information on the DMS Switching System
Digital Multiplex System (DMS) 100 by Knight Lightning
Information on the DMS-100x from Northern Telecom
Tests Start for Long Distance Equal Access Switching from Scan Man
Tests Start For Long Distance Equal Access Switching from ScanMan
Tests Start for Long Distance Equal Access Switching by Scan Man
The History of ESS By Lex Luthor
Electronic Switching System from 2600 Magazine (February 1984)
Electronic Switching Systems from 2600 (February 1984)
The Phreaker's Guide to ESS1 & 1A Switching Systems by Ninja Master (May 10, 1987)
Electronic Switching Advances, from 2600 Magazine
ESS 7 Is Out! By The Mortician and The Villain
ESS History from The Lost City of Atlantis
Electronic Switching Advances by 2600 Magazine (June, 1984)
Free Local Acces to Packet Switching Networks May be Eliminated!
Signaling System 7, by High Voltage (July 31, 1994)
Information about Modern Remote Switching
the Ins and Outs of Packet Switching
PBX's (Private Branch Exchanges) and WATS, by Steve Dahl
Understanding PBX Systems by Brainstorm Elite
Private Branch Exchanges by The Sniper (August 8, 1986)
PBX's (Private Branch Exchanges) and WATS by Steve Dahl
R.O.L.M. Sorcerer XII PBX Remote System Control by The Conflict
PBX Hacking Part I by Instinct (May 20, 1990)
Private Branch Exchanges by The Sniper (August 8)
PBX's (Private Branch Exchanges) and WATS by Steve Dahl
PBX Users Falling Victim to Determined Rip-Off Schemes!
Private Branch Exchanges by The Sniper (August 8, 1986)
Signalling Systems and The Blue Box Revamped by Lazlo (July 20, 1992)
Quick Overview of Remote Switching
Inside RSTS/E Volume III by the Maurander
Inside RSTS/E Volume IV by The Maurader
Making the Most of RSTS/E Systems by Captain Hack of Melbourne, Australia (February 1, 1986)
Explanation of Switched Digital Service 56 (SDS 56)
Secret Signals, by Texas Star (Needs some Editing)
Informaiton on Signalling System 7 (SS7)
The Phreaker's Guide to ESS1 & 1A Switching Systems by Ninja Master (May 10, 1987)
The Ins and Outs of packet Switching by The Seker of Tribunal of Knowledge (June 23 1986)