TEL500-Voice Communications

IVR using Speech Recognition in Asterisk

Devesh Mendiratta Sameer Deshmukh & Srinivas Madlapelli

Outline Introduction Flow Chart Google API Google API Interface with Asterisk Results Applications Conclusion Resources References

Introduction

Responses as per the input provided by User Speech to Text Technique c0dE: Interface of Google API (Application Programming

Interface) with Asterisk Queues Playback the recordings

Flow Chart

Google API

Syntax : same => n,agi(googletts.agi,text,[language],[intkey])

Text field Language field Intkey field

Speech agi

Syntax: Same => n(record),agi(speech-recog.agi,[lang],[timeout],[intkey],[NOBEEP])

Google agi with Asterisk

same => n(record),agi(speech-recog.agi,en-US)same => n,Verbose(1,Script returned: ${status} , ${id} , ${confidence} , ${utterance}) same => n,GotoIf($["${utterance}" = "business"]?sales:recheck) same => n(sales),Background(withusa)

Cont.same => n(sales),Goto(queues,801,1) same => n(recheck),GotoIf($["${utterance}" = "support"]?support:retry) same => n(support),Background(withusu) same => n,Goto(queues,802,1) same => n(retry),Background(repeat)same => n,agi(googletts.agi,"Can you please repeat more clearly?",en) same => n,goto(record)

Results – Sales Queue Execution

Results – Support Queue Execution

Can be extended by including all possible options Typical Example – AT&T

Account Recharge- Credit/Debit Card Balance check Customer Assistance

Surveys Campaigning

Applications

Support to all types of Businesses “Simple design” approach Service specific, e.g. Ordering Pizza via Phone

Conclusion

Hardware : 3 SIP phones Interface Files : speech-recog.agi & googletts.agi Installation : perl-libwww, the WWW library for Perl

Resources

http://www.nuance.com/for-individuals/by-solution/speech-recognition/index.htm

http://zaf.github.io/asterisk-speech-recog/

References

Any Questions ?