Orit Levin, Director of Product Management

1
Orit Levin, Director of Product Management
orit_at_radvision.com
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H.323 Status Update
October 2000
orit_at_radvision.com
3
Agenda
O V E R V I E W

• For Decision in November 2000
• H.323v4 Highlights
• For Determination in November 2000
• New Supplementary Services
• For Determination in 2001
• Future work

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For Decision in November 2000
O V E R V I E W

• H.323v.4/H.225.0v4
• H.245v7
• H.235 v.2 Security Framework
• H.323 Annex J Security for SET
• H.323 Annex K HTTP based Service Control
• H.323 Annex L Stimulus Signaling
• H.323 Annex M General infrastructure for
  tunneling signaling protocols in H.323
• Annex M.1 Tunneling procedures for QSIG
• Annex M.2 Tunneling procedures for ISUP
• H.246 Annex E IWF between ANSI-41 Mobile
  Application Part and H.225.0

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H.323 v4
F O R D E C I S I O N I N N O V E M B E R
2 0 0 0

• H.225.0 v.4
• H.245 v.6
• Gateway Decomposition Architecture/Rationale
• H.323 URL Definition
• Fast Connect Procedure, H.245 tunneling and
  Early H.245 use and coexistence has been
  clarified
• RTP Multiplexed (audio and video) stream
  transmission
• Enhancements to Annex D (T.38 Real Time Fax)
  including use of TCP channels

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H.323 v4 - Continued
F O R D E C I S I O N I N N O V E M B E R
2 0 0 0

• RAS Procedures are enhanced to support large
  networks (Address ranges, GW capacity, Additive
  Registrations)
• Alternate Gatekeepers Concept has been clarified
  and a field to announce its capability was added
• Additional Call Identifiers for billing purposes
  in Supplementary Services environment
• Usage Information Reporting in RAS (complementary
  to H.225.0 Annex G v2)
• Desired Protocols (voice/fax/T.120-only/)
• Call-credit capabilities and control

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Security
H . 2 3 5 v 2 a n d H . 2 3 5 v 3

• H.235 incorporates the work that has been done
  for the SASET within H.235v.2 Annex D
• H.323 Annex J Secure Audio SET contains a
  pointer to H.235v.2 Annex D
• Coordination with TIPHON has been achieved. The
  result will be incorporated towards H.235v.3
  Annex F
• The security procedures associated with the
  Mobility work of H.246 Annex E will be
  incorporated towards H.235v.3 Annex G

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H.323 Annex L Stimulus signaling
F O R D E C I S I O N I N N O V E M B E R
2 0 0 0

• - Addresses the second approach among possible
  three listed below
• (1)A call stateless H.248 gateway
• (2) A call-stateful, feature-stateless H.323
  Annex L device
• (3) A call-stateful, feature-stateful H.323
  H.450 device
• - Uses procedures defined by H.248/MEGACOP
  Annex G

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H.323 Annex K HTTP based Service Control
F O R D E C I S I O N I N N O V E M B E R
2 0 0 0

• Another way to achieve Stimulus signaling
• A separate HTTP connection for independent
  control protocol
• Feasible for endpoint capable of running WEB
  browser
• Call related and non-call related services are
  possible

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H.323 Annex M
F O R D E C I S I O N I N N O V E M B E R
2 0 0 0

• H.323 Annex M General infrastructure for
  tunneling signaling protocols in H.323 will
  become an integral part of H.323/H.225v4
• H.323 Annex M.1 QSIG Tunneling Procedures
• H.323 Annex M.2 ISUP Tunneling Procedures
• H.323 Annex M.3 DSS1 Tunneling Procedures For
  Determination in Nov. 2000

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H.246 Annex E IWF between ANSI-41 Mobile
Application Part and H.225.0
F O R D E C I S I O N I N N O V E M B E R
2 0 0 0

• Specifies IWF with PLMNs (Public Land Mobile
  Networks) in such a way that the Users subscribed
  in the PLMNs can maintain their user identity
  while using a H.323 system and also be recognised
  by the PLMN system so that the Users can initiate
  and receive services like voice calls to and from
  the PLMN and two-way interactive messaging (e.g.,
  Short Message Services) etc.
• Proposes to move the work IWF between GSM Mobile
  Application Part (MAP of CCITT Signalling System
  number 7), PDC Mobile Application Part (MAP of
  Japan Signalling System number 7) and H.225.0
  Multimedia protocols for further study

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H.246 Annex E IWF between ANSI-41 Mobile
Application Part and H.225.0
F O R D E C I S I O N I N N O V E M B E R
2 0 0 0
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Old Supplementary Services
9 8 / 9 9 D E C I D E D

• H.450.1 Supplementary Services Framework
• H.450.2 Call Transfer
• H.450.3 Call Forward
• H.450.4 Call Hold
• H.450.5 Call Park and Call Pickup
• H.450.6 Call Waiting
• H.450.7 Message Waiting Indication

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New Supplementary Services
F O R D E C I S I O N / D E T E R M I N A T I
O N I N 2 0 0 0 / 2 0 0 1

• H.450.8 Name Identification (2000/02 Decided)
• H.450.9 Call Completion on Busy (for 2000/11
  Decision)
• H.450.10 Call Offer (for 2000/11 Determination)
• H.450.11 Call Intrusion (for 2000/11
  Determination)
• H.450.12 Common Information Additional Network
  (for 2000/11 Determination)

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For Determination in November 2000
O V E R V I E W

• H.323 Annex E v.2 UDP Call Signalling
• H.225.0 Annex G v.2 Inter-Domain Communication
• H.323 Annex H User, Service and Terminal
  Mobility in H.323
• H.323 Annex I Packet based MM Telephony over
  Error Prone Channels
• H.323 Annex R Robustness
• H.323 Annex M.3 Tunneling procedures for DSS1
• Based on the work progress by November 2000

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H.323 Annex R Robustness
F O R D E T E R M I N A T I O N I N N O V E
M B E R 2 0 0 0

• Robustness Procedures cover two architectures
• Small to medium network, low-end simple
  procedures
• Highly scalable procedures for large networks
  relying on virtually shared memory among
  redundant points of failure
• Will use the the genericData Framework of
  H.225.0v4

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For Determination in 2001
O V E R V I E W

• H.323 Annex N QoS in H.323
• H.323 Annex O Internet Operations
• Modem over H.323 a-la FAX over H.323

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H.323 Annex N QoS in H.323
F O R D E T E R M I N A T I O N I N 2 0 0 1

• Signal by H.323 means the kind of QoS required
  for the service
• In general a controversial approach because
• It is an issue of agreement between the Service
  Providers
• It is not necessarily end-to-end per call
  negotiation process
• It is not necessarily per Application
• The user wouldnt like to pay different charges
  for different media
• End-to-end Media may take a path, different from
  the Call Signaling Path

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H.323 Annex O Internet Operations
F O R D E T E R M I N A T I O N I N 2 0 0 1

• Address Resolution
• H323-URL definition
• DNS based address resolution procedures
• H.323 Services Advertising
• Address resolution using ENUM
• Services Location using TRIP
• Call Processing Language (CPL)
• Working in Firewall and NAT environments (IETF
  FOGLAMPS Initiative)

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E N U M O B J E C T I V E S

• Map a virtual phone number on Internet to a
  list of URLs for each service, it provides

INTERNET
H.323 Service
DNS Server
SIP Service
GW
Caller
PSTN
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WERE EVERYWHERE!
orit_at_radvision.com