pietro schicker tispan#6 2005-05-11 2 scope (1) verification of the psdn/isdn emulation based on...

Pietro Schicker

TISPAN#6 2005-05-11 2

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»

TISPAN#6 2005-05-11 3

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

TISPAN#6 2005-05-11 4

Members of STF 281

Pietro Schicker (Swisscom)

Scott Cadzow (Cadzow Communications)

Esbjörn Engberg (Ericsson)

Steve Randall (PQM Consultants)

Peter Schmitting (FSCOM)

TISPAN#6 2005-05-11 5

Schedule

Base of where we go

Identification of documentsVerification basic services(not yet complete)

Verification of all servicesModeling of selected services

Final draft of TR for review

Completion of work

• TISPAN#5bisTISPAN#6

• TISPAN#6bis

• TISPAN#7• TISPAN#8

TISPAN#6 2005-05-11 6

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 TISPAN#6 (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

Signalling/MediaGateway

Call Setup

ISDNPSTN

NGN TETE

AccessGateway

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Scenario from presentation at TISPAN #5-bis

Scenario 1:ISDN/PSTN call to NGN user

Gateway

Call Setup

ISDNPSTN

NGN TETE

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


Call Setup

NGNISDNPSTN

TETE

AccessGateway

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

AccessGateway

Call Setup

NGN TETE

AccessGateway

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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


Call Setup

ISDNPSTN

NGN

TETE


ISDNPSTN

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Carrier Class Services (1)

Basic transfer servicesBasic transfer services• 64 kbit/s (unrestricted, clearchannel)• 3.1 kbit/s audio for

– Modem– Telefax Group 2/3

• Speech

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

• Release call

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

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Functional Entity Diagram

LegendSignalling relation

Distributor: Any two functional entities that are con-nected to the distributor may need to exchange information.

Scope of STF 281

Media Path

Service 3

Service 2

Service 1

S/T

A-BGF I-BGF

Transport

RACS

AGF

AGF

AGCF

PSTN/ISDNServices

TGCF

TopologyHiding

Gateway

TrunkRouting

MasterCustomer

Data

Service A

Service B

Service C

CustomerLocation

PSTN

otherNGNs

ApplicationServices

LocalCustomer

Data

NASS

S/T

AGF

SGF intra-NGNPSTN/ISDN emulation

otherNGNs

intraNGN

BRA

PRA

Z

RGF

AGFV5.2

H.248

IN

ISDN

TGF

PSTN/ISDNEmulationSubsystem

(b)

(c)

(f)

(e)

(l)

(j)

(g)

(k)

(a)

(i)

(h)

(d)

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Tasks for STF 281

1

2

3

Verification of the Basic Transfer Services

Verification of the Basic Call Services

Verification of the Supplementary Services

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.

TISPAN#6 2005-05-11 21

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 TISPAN#6

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

TISPAN#6 2005-05-11 27

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

pietro schicker tispan#6 2005-05-11 2 scope (1) verification of the psdn/isdn emulation based on...

Documents

ngn slide

bis tispan

ngn user slide

isdnpstn network slide

speech slide

possible slide

reference point f slide

services signalling