ESS1 &1A Switching Systems by Ninja Master
List of 1A Input/Output Messages
The TAO of ESS by Deadkat and DisordeR
Central Office Operations Western Electric 1ESS, 1AESS
AT$T 5ESS(tm) From Top to Bottom by Firm G.R.A.S.P.
5ESS Manual #1
5ESS Manual #2
5ESS Manual #3
Operator Services Position System for the 5ESS
Automatic Message Accounting (AMA) Overview by Phantom
Phreaker
AT&T BILLDATS Collector by Rogue Fed
CCITT Hierarchy Nomenclature
Custom Local Area Signalling Services by Videosmith
CLASS Phone Features by Chris Ambler (Telecom Digest)
DMS Family of Digital Switching Systems by Erudite
Summary: Description of DMS 10,100,200,250,300 (usenet)
Digital Multiplex System (DMS) 100 by Knight Lightning
Northern Telecom DMS100 Reference Manual
Helmsmen Documentation List (For DMS100)
A NAPPA Profile on ESS by Blind Justice
The History of ESS by Lex Luthor
Notes from No 2 ESS Administration and Maintenance Plan
ESS 7 is OUT! (Not very..accurate)
Peering into the Soul of ESS - The Master Control
Center
Outside Loop Distribution Plant by Phucked Agent
04
The Fine Art of Telephony by Crimson Flash
The Cross Bar Switching Guide [Xbar #5] by Xbar
Switchman
Step by Step Switching Notes by Phantom Phreaker