ETSI EN 301 821-2004
Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Private User Mobility (PUM); Registration supplementary service (V1.2.1; ISO/IEC 17876 (2003), modified)

Standard No.

ETSI EN 301 821-2004

Release Date

2004

Published By

European Telecommunications Standards Institute (ETSI)

Latest

ETSI EN 301 821-2004

ETSI EN 301 821-2004 history

• 2004 ETSI EN 301 821:2004 Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Private User Mobility (PUM); Registration supplementary service (V1.2.1; ISO/IEC 17876 (2003)@ modified)
• 2003 ETSI EN 301 821:2003 Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Private User Mobility (PUM); Registration supplementary service (V1.2.1; ISO/IEC 17876 (2003)@ modified)
• 2000 ETSI EN 301 821:2000 Private Integrated Services Network (PISN); Inter-Exchange Signalling Protocol; Private User Mobility (PUM); Registration Supplementary Service (ISO/IEC 17876 (2000)@ Modified; V1.1.1)