5 Network characteristics

09.043GPPInterworking between the Public Land Mobile Network (PLMN) and the Circuit Switched Public Data Network (CSPDN)TS

5.1 Key characteristics of Network concerned

Characteristics

GSM PLMN

CSPDN

ISDN

Subscriber Interface

Digital

Digital

Digital

User-network signalling

GSM 04.08

X.21, X.21bis

Q.931, Q.921

User-terminal equipment

See GSM 07.03

X.21,X21.bis-terminals

supported

Inter-exchange signalling

SS No.7 ISUP,TUP+,MAP

X.71

ISUP, TUP+

Transmission facilities

Digital

Digital

Digital

Exchange types

Digital

Digital

Digital

Information transfer mode

Circuit

Circuit

Circuit

Information transfer capability

Digital unrestricted

Circuit switched data

Digital

transmission services

unrestricted