ASR System Integration with Asterisk for SIP or IAX Softphone Clients

Author

Goel, Saurabh ; Garg, Vikash ; Ranjan, Prashant ; Rao, Satyanarayan ; Bhattacharya, Mahua

Author_Institution

Dept. of Inf. Technol., Indian Inst. of Inf. Technol. & Manage., Gwalior, India

fYear

2009

fDate

17-20 April 2009

Firstpage

100

Lastpage

104

Abstract

This paper provides an insight into the integration of automatic speech recognition with VoIP based Asterisk PBX Server. Softphones are used as VoIP clients which uses SIP and IAX as primary communication protocols to connect to Asterisk PBX Server. A tied-state hidden Markov model based automatic speech recognizer for digits recognition is designed with the help of HTK Toolkit which is integrated with Asterisk PBX server. This paper gives a brief description of the Asterisk PBX Server and system architecture and finally the configuration, integration and implementation of ASR system with Asterisk PBX Server.

Keywords

Internet telephony; client-server systems; hidden Markov models; network servers; private telephone exchanges; protocols; speech recognition; ASR system; Asterisk PBX Server; HTK Toolkit; IAX softphone client; SIP softphone client; VoIP; automatic speech recognition; communication protocol; digits recognition; tied-state hidden Markov model; Automatic speech recognition; Codecs; Computer architecture; Hardware; Hidden Markov models; Information technology; Internet telephony; Protocols; Speech recognition; Springs; AGI; ASR; Asterisk; Dialplan; HMM; HTK; IAX; PBX; SIP; Softphone; VoIP;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science and Information Technology - Spring Conference, 2009. IACSITSC '09. International Association of

Conference_Location

Singapore

Print_ISBN

978-0-7695-3653-8

Type

conf

DOI

10.1109/IACSIT-SC.2009.87

Filename

5169318