ECMA 178-1992
Private Telecommunication Networks (PTN) - Inter-Exchange Signalling Protocol - Call Transfer Supplementary Service (QSIG-CT)

Standard No.

ECMA 178-1992

Release Date

1992

Published By

ECMA - European Association for Standardizing Information and Communication Systems

Status

Be replaced 2003-05

Replace By

ECMA 178-1997

Latest

ECMA 178-2001

ECMA 178-1992 history

• 2001 ECMA 178-2001 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Transfer Supplementary Service (3rd Edition)
• 1997 ECMA 178-1997 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Transfer Supplementary Service (QSIG-CT) (2nd Edition)
• 1992 ECMA 178-1992 Private Telecommunication Networks (PTN) - Inter-Exchange Signalling Protocol - Call Transfer Supplementary Service (QSIG-CT)