A gateway between a EUROCOM D/1-network and a private PTT-type CCITT SS7-network

Author

Nieminen, Tapani ; Simola, Antti

Author_Institution

Commun. Lab., Helsinki Univ. of Technol., Espoo, Finland

fYear

1992

fDate

11-14 Oct 1992

Firstpage

149

Abstract

The authors discuss the design of a digital gateway between a EUROCOM D/1 network and a private PTT-type CCITT SS7-network using eight TMS320C25 digital signal processors. This gateway converts 30 channel trunks between a tactical network and a fixed network. The gateway includes a signaling converter for EUROCOM D/1 loop signaling and CCITT SS7 TUP (telephone user part). The gateway also accomplishes speech transcoding between EUROCOM D/1 16 kb/s CVSD (continuously variable slope delta modulation) and 64 kb/s A-law pulse code modulation. The authors discuss possible methods for data conversion between EUROCOM D/1 RMVD/BCH-codes and PTT network, especially CCITT V.110/X.30 ISDN bit rate adaptation

Keywords

digital communication systems; digital signal processing chips; telecommunication equipment; telecommunication signalling; 16 kbit/s; 64 kbit/s; A-law pulse code modulation; CCITT; CVSD; EUROCOM D/1 network; RMVD/BCH-codes; SS7-network; TMS320C25 digital signal processors; V.110/X.30 ISDN bit rate adaptation; continuously variable slope delta modulation; data conversion; digital gateway; fixed network; loop signaling; private PTT network; signaling converter; speech transcoding; tactical network; telephone user part; trunks; Data conversion; Delta modulation; Digital signal processors; ISDN; Modulation coding; Pulse modulation; Signal design; Speech coding; Telephony; Transcoding;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1992. MILCOM '92, Conference Record. Communications - Fusing Command, Control and Intelligence., IEEE

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0585-X

Type

conf

DOI

10.1109/MILCOM.1992.244174

Filename

244174