ECMA 143-1990
Layer 3 Protocol for Signalling between Exchanges of Private Telecommunication Networks for the Control of Circuit-Switched Calls

Standard No.

ECMA 143-1990

Release Date

1990

Published By

ECMA - European Association for Standardizing Information and Communication Systems

Status

Be replaced 2001-04

Replace By

ECMA 143-1992

Latest

ECMA 143-2001

ECMA 143-1990 history

• 2001 ECMA 143-2001 Private Integrated Services Network (PISN) - Circuit Mode Bearer Services - Inter-Exchange Signalling Procedures and Protocol (4th Edition)
• 1997 ECMA 143-1997 Private Integrated Services Network (PISN) - Circuit Mode Bearer Services - Inter-Exchange Signalling Procedures and Protocol (QSSIG-BC) (Third Edition)
• 1992 ECMA 143-1992 Private Telecommunication Network (PTN) - Inter-Exchange Signalling Protocol - Circuit Mode Basic Services (QSIG-BC)
• 1990 ECMA 143-1990 Layer 3 Protocol for Signalling between Exchanges of Private Telecommunication Networks for the Control of Circuit-Switched Calls