Pietro Schicker

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STF 281
Validation NGN R1

• Pietro Schicker

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Scope (1)

• Verification of the PSDN/ISDN emulation
• based on ETSI eISDN specifications
• from NGN R1 requirements
• Provide widely used set of CARRIER CLASS
  SERVICES

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Scope (2)

• Verification is based on a review ofrelevant
  existing or emerging standards
• Assures that the migration between existing
  implementations and the NGN is possible

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Members of STF 281

• Pietro Schicker (Swisscom)
• Scott Cadzow (Cadzow Communications)
• Esbjörn Engberg (Ericsson)
• Steve Randall (PQM Consultants)
• Peter Schmitting (FSCOM)

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Schedule

• Base of where we go
• Identification of documents
• Verification basic services(not yet complete)
• Verification of all services
• Modeling of selected services
• Final draft of TR for review
• Completion of work

• TISPAN5bis
• TISPAN6
• TISPAN6bis
• TISPAN7
• TISPAN8

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Milestone B

• Progress Report, with the description of the
  network services support, identifica-tion of
  potential issues for PSTN Emula-tion Subsystem
  (PES) emulation and preliminary draft of
  DTR/TISPAN-03033-NGN-R1, including, at least ToC,
  scope, structure, for review by TISPAN6 (9-13
  May), ready on 29 April 2005.

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Scenarios for NGN R1 (1)

• Scenario 1
• ISDN/PSTN user attached to ISDN/PSTN network
  initiates call to ISDN/PSTN user attached to NGN

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Scenario from presentation at TISPAN 5-bis

• Scenario 1
• ISDN/PSTN call to NGN user

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Scenarios for NGN R1 (2)

• Scenario 2
• ISDN/PSTN user attached to NGN initiates call to
  ISDN/PSTN user attached to ISDN/PSTN network

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Scenarios for NGN R1 (3)

• Scenario 3
• ISDN/PSTN user attached to NGN initiates call to
  ISDN/PSTN user attached to NGN

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Scenarios for NGN R1 (4)

• Scenario 4
• ISDN/PSTN user attached to ISDN/PSTN network
  initiates call to ISDN/PSTN user attached to
  ISDN/ PSTN network, the call/connection setup
  passes through an NGN

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Carrier Class Services (1)

• Basic transfer services
• 64 kbit/s (unrestricted, clearchannel)
• 3.1 kbit/s audio for
• Modem
• Telefax Group 2/3
• Speech

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Carrier Class Services (2)

• Basic call services
• Establish call for basic transfer service
• Release call

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Carrier Class Services (3)

• Supplementary services
• Calling Line Identification Presentation (CLIP)
• Calling Line Identification Restriction (CLIR)
• Connected Line Identification Presentation (COLP)
• Connected Line Identification Restriction (COLR)
• Terminal Portability (TP)
• Diversion supplementary service
• Three-Party etc.

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Carrier Class Services (4)

• Regulatory services
• Lawful Interception (LI)
• International Emergency Preference Scheme (IEPS)
• Malicious Call Identification (MCID)

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Functional Entity Diagram
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Tasks for STF 281

• Verification of PSTN/ISDN emulation for Carrier
  Class Services, i.e.,

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Verification of the Basic Transfer Services

• Media gateway functionality of an AGF at
  reference point (a, b, c, d)
• Media gateway functionality of an RGF at
  reference point (e)
• Trunking media gateway functionality of an MGF at
  reference point (g)
• Resource management functionality of the
  interface at reference point (f)

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Media gateway functionality of an AGF at
reference point (b)

• This may involve
• assessment whether the AGW can handle the PSTN
  control stream (e.g., DTMF in both directions,
  register recall, etc.)
• assessment whether the AGW can handle the
  Carrier Class data streams exc. 64 kbit/s
• assessment whether the specified SDP part of SIP
  leads to successful negotiations for the Carrier
  Class data streams
• DES03009 DES03019 might give answers.

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Media gateway functionality of an AGF at
reference point (c)

• This may involve
• assessment whether the AGW can handle the ISDN
  control stream (e.g., Q.931, Q.921 including TEI
  management and line activation, etc.)
• assessment whether the AGW can handle all
  Carrier Class data streams
• assessment whether the specified SDP part of SIP
  leads to successful negotiations for all Carrier
  Class data streams
• DES03009 DES03019 might give answers.

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Verification of theBasic Call Services

• Signalling capability of an AGF at reference
  point (a, b, c, d) the signalling capability
  includes the signalling towards a TE attached to
  the AGF as well as the signalling towards the
  AGCF.
• Signalling capability of an RGF at reference
  point (e) the signalling capability includes the
  signalling towards a TE attached to the AGF as
  well as the signalling towards the AGCF.
• Signalling capability of an SGF at reference
  point (h, i, j, k)
• Signalling capability of an THGF at reference
  point (l)

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Signalling capability of an AGF at reference
point (b)

• This may involve
• assessment whether the procedures to communicate
  with the relevant H.248 features (including
  packages) are specified and complete
• assessment whether all line signals (e.g.,
  ringing, DTMF in-call and out-call, register
  recall, etc.) can be relayed to or from the AGCF
• DES03009 might give answers.

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Signalling capability of an SGF at reference
point (i)

• This may involve
• assessment whether the procedures to communicate
  with the relevant H.248 features (including
  packages) are specified and complete
• assessment whether the references to MTP, ISUP,
  TUP, TUP, etc. are sufficient or whether further
  specifications are required
• There might exist a WI that could give answers.

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Verification of theSupplementary Services

• Step 1 Identification of the Supplementary
  Services to be verified
• Step 2 Verification of the selected
  Supplementary Services

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Essential for TISPAN6

• That WG3 approves
• the Scope of DTR-03033
• the Carrier Class Services identified
• the method of approach
• and as a bonus
• helps with the identification of select
  supplementary services to be verified

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Next Steps

• Identify existing ETSI standards or the WI for
  emerging ETSI standards that define packages,
  profiles, and procedures at the reference points
• identify select supplementary services
• start the verification on selected supplementary
  services

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Next Steps

• Identify existing ETSI standards or the WI for
  emerging ETSI standards that define packages,
  profiles, and procedures at the reference points
• identify select supplementary services
• start the verification on selected supplementary
  services

THANK YOU