An overview of Signaling System No.7

Author

Modarressi, Abdi R. ; Skoog, Ronald A.

Author_Institution

AT&T Bell Lab., Columbus, OH, USA

Volume

80

Issue

4

fYear

1992

fDate

4/1/1992 12:00:00 AM

Firstpage

590

Lastpage

606

Abstract

An overview of Signaling System No.7 (SS7) is presented. The salient features of SS7´s network services part (NSP) are described. Functionally, NSP corresponds to the first three layers of the Open System Interconnection (OSI) reference model. The signaling network structures that, in conjunction with the NSP, provide integrated services digital network (ISDN) nodes with a highly reliable and efficient means of exchanging signaling messages are discussed. The nodal capabilities of call control and remote process invocation and management, part of the SS7 user parts, are described. The very stringent performance requirements of signaling systems and their reflection on the critical nature of signaling functions and their real-time exigencies are discussed. The likely evolution of network signaling in the remaining years of the 20th century is discussed

Keywords

ISDN; protocols; signalling (telecommunication networks); telecommunication services; Open System Interconnection; SS7; Signaling System No.7; call control; integrated services digital network; network services part; nodal capabilities; reference model; remote process invocation; signaling messages; Access protocols; Communication system signaling; Control systems; ISDN; Open systems; Real time systems; Signal processing; Telecommunication control; Telecommunication network reliability; Telecommunication traffic;

fLanguage

English

Journal_Title

Proceedings of the IEEE

Publisher

ieee

ISSN

0018-9219

Type

jour

DOI

10.1109/5.135382

Filename

135382