H.324 M Interoperability Chair Bernhard Wimmer

1
H.324 / M InteroperabilityChair Bernhard Wimmer

• Observations
• The IMTC is the appropriate forum to champion
  this work
  
• H.324 is pretty much settled
• New H.324 Mobile Product Implementations are
  emerging due standardization by 3GPP
  
• Recommendations
• Develop H.324/M Interoperability Test Plan and
  Score Sheet
  
• Coordinate H.324 Interoperability Test Events
  with 3GPP (and ITU-T SG16)
  
• Educate Members on latest Standards Updates
• Provide feedback and suggestions for improvements
  to 3GPP
  
• Encourage use of reflectors for e-mail
  discussions on implementation issues
  
• Contribute to H.324/H324Mobile interworking
  planning.
  

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3GPP 3G-324M Overview

• ITU-T developed H.324 Mobile extension (H.324M)
• H.324 Annex C has been established in 98.2
• 3GPP extended H.324 Annex C
• 3G-324M has been established in 99.12
• Specified the audio/video CODECs suitable for
  Wireless Network
  
• Mandatory support of AMR speech CODEC
• Mandatory support of H.263 baseline
• Optionally but recommended support of MPEG-4
  Simple Profile _at_ Level 0
  
• Specified the multiplexing for Wireless Network
• Mandatory support of H.223 Level 2 (Annex B)
• Added several clarifications
• Based on the interoperability test carried out by
  the interested companies
  
• Described in 3G-324M Implementors Guide

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Building Blocks of 3G-324M/ H.324M

• H.223 multiplexed bitstream is mapped onto
  digital channel
  
• Bearer control messages are delivered as in-band
  data
  
• Modem/Mode negotiation is not applied

Out-band
Call Control
In-band
Bearer Control H.245
Wireless Network
Wireless Network I/F
H.223 Annex B
Audio CODEC AMR
Video CODEC H.263/MPEG-4