MRCPv2 - PowerPoint PPT Presentation

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MRCPv2

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Need to allow MRCP server/proxy to do a SIP re-INVITE and redirect the media as necessary. ... Do we need to add support for Grammar management at the server level? ... – PowerPoint PPT presentation

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Title: MRCPv2


1
MRCPv2
  • Sarvi Shanmugham
  • Cisco Systems Inc.

2
Status
  • At version 00.
  • Edits from the last meeting added.
  • Awaiting addition of SI/SV functionality.
  • A proposal for SI, SV, Enrollment, Hotword
    Recording is out as draft currently for MRCPv1
    support.
  • Soon to be integrated into MRCPv2.

3
Open Issues
  • Proxy support.
  • Need to add call flows describing how MRCP
    proxies would work.
  • Need to allow MRCP server/proxy to do a SIP
    re-INVITE and redirect the media as necessary.
  • Starting/Stopping media from the client to the
    server for a RECOGNIZE method.
  • Recording support
  • Need support for a separate Recording resource.
  • Does this recording resource relate to Recognizer
    capability to record utterances.
  • Does this recording resource relate to Speaker
    Verification engines capability to record/buffer
    utterances.
  • Does the utterance recording capability of
    Recognizers relate to Speaker verification needs
    to record utterances or buffer speech.

4
Open Issues
  • Resource Types or Profiles
  • Need to support separate resource types for
    things like DTMF recognizer, Audio Player,
    Poorman TTS.
  • These may not require completely different
    resource state machines or methods and can be
    addressed by the same methods as Recognizer and
    Synthesizer resources. We could address them with
    resource sub-types or profiles. Any suggestions.
  • NLSML Vs EMMA
  • Proposal to add EMMA as a SHOULD have for MRCPv2.
  • We would continue to have support NLSML for
    backward compatibility.

5
Open Issues
  • Multiple media sessions under a single MRCP
    session.
  • Do we need support for this.
  • If there is a need for a separate media session
    for Recognition and SI and SV and Recording. Why
    have it under a single MRCP session? Would it be
    a reason to have a separate MRCP session?
  • Do we need to support multiple active SPEAK
    requests with capability to switch between them
    by pausing and resuming the different speak
    request.
  • Do we need to rename START-OF-SPEECH event to see
    that it applies for DTMF as well as speech.
    Should it be START-OF-INPUT?

6
Open Issues
  • Content Management
  • If we add support for Recorders, we may need
    mechanisms to fetch the recorded audio.
  • Can we do this content management using HTTP
    instead of adding new methods into MRCPv2?
  • Do we need to add support for Grammar management
    at the server level?
  • Do we need the capability to delete grammars
    within a session?
  • Do we need to support the management Speech
    content?
  • Is there a need for Intermediate Recognition
    Results?
  • Cookies?
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