SIST ETS 300 455-2 E1:2003

• Abstract:

  DE/NA-010020-2

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 455-2 ed.1 (1995-08) - Broadband Integrated Services Digital Network (B-ISDN); Broadband Virtual Path Service (BVPS); Part 2: BVPS for Reserved communications (BVPS-R)

SIST ETS 300 455-2 E1:2003 is the Slovenian adoption of ETS 300 455-2 Edition 1 from ETSI. It specifies the stage 1 service description for Broadband Virtual Path Service for Reserved communications (BVPS-R) in a Broadband Integrated Services Digital Network (B-ISDN). The standard is for service providers, managers, network planners, and implementers who need to understand how the service is subscribed to, reserved, activated, modified, and described at the service level.

What does SIST ETS 300 455-2 E1:2003 specify?

SIST ETS 300 455-2 E1:2003 defines the stage 1 of BVPS-R for a B-ISDN as provided by European public telecommunication operators. It sets the service view of reserved communications, including how the service is offered, how users and managers interact with the Service Management Entity (SME), and how the service is described by attributes.

The standard says it applies to later stage 2 and stage 3 standards for BVPS-R, and it includes interworking requirements with other networks when they connect to a B-ISDN. It also states that charging principles and management operations are outside its scope, and that no method of testing is provided.

The document is organized into these main parts:

Part	What it covers
Clause 1	Scope and service boundaries
Clause 2	Normative references
Clause 3	Definitions, symbols and abbreviations
Clause 4	Service description
Clause 5	Procedures for provision, reservation, registration, modification, erasure and invocation
Clause 6	Interworking
Clause 7	Interaction with supplementary services
Clause 8	Static description of the service using attributes
Annex A	Informative reference configuration

What are the key requirements of SIST ETS 300 455-2 E1:2003?

SIST ETS 300 455-2 E1:2003 describes BVPS-R as a point-to-point reserved communication service between two users. In practice, that means the service is not a general packet service or a best-effort connection - it is a reserved virtual path service with controlled traffic parameters.

Service basis and transfer characteristics

Clause 4 says BVPS-R is based on Asynchronous Transfer Mode (ATM) Virtual Path (VP) connections in a B-ISDN. User information is transferred as unrestricted digital information in ATM cells, and the user information is sent in blocks of 48 octets during a time slot. For implementers, this means the service is framed around VP resources, not around circuit voice channels or higher-layer application data.

Clause 4 also says the network allocates resources using the Peak Cell Rate (PCR) for each VP, and statistical multiplexing cannot be used. The service can carry Constant Bit Rate (CBR) or Variable Bit Rate (VBR) source traffic, but the source bit rate must stay at or below the PCR. In practice, operators have to reserve enough bandwidth for the negotiated PCR instead of counting on excess capacity.

Subscription, provision and withdrawal

Clause 5.1 says the service is provided after prior arrangement with the Service Provider (SP), and it is withdrawn on request of the subscriber or for SP reasons. The subscriber identifies one manager and one or more users, and the service can coexist with BVPS-P on the same UNI. The subscription also sets the maximum number of VPs per UNI and the maximum bandwidth available at each UNI.

This matters because the subscription is not just a generic account - it fixes who may control the service, how many VPs can be used, and the limits that apply at access. The SP also sets the timing values for notification, availability and subscription duration.

Reservation, activation and deactivation

Clause 5.2.1 defines two reservation types: non-periodic and periodic. Non-periodic reservation is used for a single reserved interval, while periodic reservation repeats the activation and deactivation pattern over time slots. The service becomes effectively available when the requested PCR becomes greater than zero, and deactivation returns the PCR to zero.

For periodic VPs, the SP may allow deactivation and the next activation to happen at the same time so that the PCR changes without going to zero. In practice, this supports recurring booked capacity without breaking continuity between periods.

Registration and negotiation with the SME

Clause 5.2.2 says registration is made through the SME. If both users belong to the same manager, the manager sends the request and the SME returns a positive or negative notification, including the negotiated values when the request is accepted. If the VP spans users related to different managers, the SME also involves the other manager before establishment.

This is important operationally because BVPS-R is not just provisioned automatically. It is negotiated, confirmed, and sometimes adjusted through manager-to-SME exchanges before the VP exists.

Required registration data

Clause 5.2.2 distinguishes the parameters that must be supplied for non-periodic and periodic reservations. For non-periodic reservation, the manager provides the reservation type, the user ISDN numbers, activation and deactivation times, symmetry, and PCR. For periodic reservation, the manager provides the period, the first and last period times, the activation and deactivation times for each time slot, symmetry, and PCR for each slot.

Optional values can include VPI per user and QoS values. In practice, implementers need to support both simple and repeating booking patterns, and they need to handle asymmetric directions when required.

Modification, erasure and invocation

Clause 5.2.3 allows a manager to modify parameters of a registered VP, or to cancel the whole VP or a specific time slot in a periodic reservation. Clause 5.2.4 says erasure deletes the VP data from the SME when the VP is released. Clause 5.2.5 says BVPS-R is automatically invoked when the user provides user information in blocks of 48 octets during a time slot.

What terms does SIST ETS 300 455-2 E1:2003 define?

• Broadband Virtual Path Service (BVPS-R) - The reserved-communications version of the broadband virtual path service defined by this standard.
• Service Management Entity (SME) - The functional entity that receives VP registration, modification and interrogation requests from the manager.
• Global Virtual Path Identifier (GVPI) - The identifier used to manage a complete VP.
• Peak Cell Rate (PCR) - The cell rate associated with a VP and used by the network to allocate resources.
• Peak Emission Interval (PEI) - The interval used together with Cell Delay Variation tolerance to define conformance for user cells.
• Cell Delay Variation (CDV) tolerance - The permitted time variation relative to theoretical arrival time.
• Virtual Channel Identifier (VCI) - The logical number that identifies a VC locally at the User-Network Interface.
• Time slot - The interval between activation and the following deactivation of a VP.

Who uses SIST ETS 300 455-2 E1:2003?

SIST ETS 300 455-2 E1:2003 is used by B-ISDN service providers, network operators, and telecom planners who need a common service definition for reserved virtual path connections. It is also used by implementers of management systems and user-network interface functions that must support VP reservation, registration and modification.

For day-to-day work, managers use it to request, modify, or cancel reserved VPs on behalf of users. Engineers use it to design the service behavior, traffic handling, and interworking around ATM-based VP connections. Quality and procurement teams use it to check that the service description matches the needed reserved-communications model before implementation or acceptance.

Which standards are used with SIST ETS 300 455-2 E1:2003?

The standard relies on these normative references and companion parts:

• CCITT Recommendation E.164 - Numbering plan for the ISDN era, used for ISDN numbers.
• ITU-T Recommendation I.112 - ISDN vocabulary, used for general ISDN terms.
• ITU-T Recommendation I.113 - Broadband ISDN vocabulary, used for ATM, broadband, VC and VCI terms.
• CCITT Recommendation I.130 - Service characterization method, used for the stage 1 to stage 2 and stage 3 relationship.
• ITU-T Recommendation I.140 - Attribute technique for service characterization.
• ITU-T Recommendation I.150 - ATM functional characteristics.
• ITU-T Recommendation I.356 - ATM cell transfer performance, used for QoS.
• ITU-T Recommendation I.361 - ATM layer specification, used for VP and cell format details.
• ITU-T Recommendation I.371 - Traffic control and congestion control in B-ISDN, used for PCR, PEI and CDV tolerance.
• ITU-T Recommendation M.3010 - Telecommunications management network principles, used for manager and SME interaction.
• ETS 300 299 - Cell-based user network access physical layer interfaces.
• ETS 300 300 - SDH-based user network access physical layer interfaces.
• ETS 300 455-1 - The companion part for BVPS-P, the permanent communications version.

What does the SIST ETS 300 455-2 E1:2003 document contain?

The document contains service definitions, procedure flows, parameter lists and an informative reference configuration. Clause 5 uses schedules and step-by-step exchanges to show how provisioning, reservation, activation, deactivation, modification and erasure work for both single reservations and periodic reservations.

Clause 8 organizes the service as a set of attributes, including information transfer mode, connection mode, traffic type, VCI transparency, information transfer rate, communication configuration, access channels, access protocols and QoS. Annex A gives a reference configuration with the SP, SME, managers, users and the management and user planes, which helps readers see where the service boundaries and reference points lie.

SLOVENSKI STANDARD
01-december-2003
Širokopasovno digitalno omrežje z integriranimi storitvami (B-ISDN) – Storitev
širokopasovne navidezne poti (BVPS) – 2. del: BVPS za rezervirane komunikacije
(BVPS-R)
Broadband Integrated Services Digital Network (B-ISDN); Broadband Virtual Path
Service (BVPS); Part 2: BVPS for Reserved communications (BVPS-R)
Ta slovenski standard je istoveten z: ETS 300 455-2 Edition 1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 455-2
TELECOMMUNICATION August 1995
STANDARD
Source: ETSI TC-NA Reference: DE/NA-010020-2
ICS: 33.040
ATM, B-ISDN, bearer, broadband, ISDN, service, stage 1
Key words:
Broadband Integrated Services Digital Network (B-ISDN);
Broadband Virtual Path Service (BVPS);
Part 2: BVPS for Reserved communications (BVPS-R)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1995. All rights reserved.
New presentation - see History box

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ETS 300 455-2: August 1995
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Standards Approval Dept." at the address shown on the title page.

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ETS 300 455-2: August 1995
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions, symbols and abbreviations.8
3.1 Definitions .8
3.2 Symbols and abbreviations.9
4 Description .10
5 Procedures.10
5.1 Provision and withdrawal .10
5.2 Procedures.12
5.2.1 Activation and deactivation.12
5.2.1.1 Non-periodic reservation.12
5.2.1.2 Periodic reservation.13
5.2.2 Registration .13
5.2.2.1 Non-periodic VP.14
5.2.2.1.1 Mandatory registration parameters.14
5.2.2.1.2 Optional registration parameters .14
5.2.2.2 Periodic VP.14
5.2.2.2.1 Mandatory registration parameters.14
5.2.2.2.2 Optional registration parameters .14
5.2.3 Registration modification.15
5.2.4 Erasure.15
5.2.5 Invocation and operation .15
6 Interworking.16
6.1 Interworking with N-ISDNs.16
6.2 Interworking with private B-ISDNs .16
7 Interaction with supplementary services .16
8 Static description of the service using attributes .16
8.1 Information transfer mode .16
8.1.1 Connection mode .16
8.1.2 Traffic type of VP.16
8.1.3 End-to-end timing of VP .16
8.1.4 VCI transparency.16
8.2 Information transfer rate .16
8.3 Information transfer capability of VP.16
8.4 Structure of VPs.16
8.5 Establishment of communication.17
8.6 Symmetry of VP.17
8.7 Communication configuration .17
8.8 Access channels and rates.17
8.8.1 For user information .17
8.8.1.1 Number of channels .17
8.8.1.2 Type of channels .17
8.8.2 For signalling .17

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ETS 300 455-2: August 1995
8.9 Access protocols . 17
8.9.1 Information access protocol physical layer. 17
8.9.2 Information access protocol ATM layer . 17
8.9.3 Information access protocol ATM adaptation layer . 17
8.10 QoS of VPs. 17
Annex A (informative): Reference configuration. 18
History. 19

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ETS 300 455-2: August 1995
Foreword
This European Telecommunication Standard (ETS) has been produced by the Network Aspects (NA)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS defines stage one of the Broadband Virtual Path Service (BVPS) for a Broadband Integrated
Services Digital Network (B-ISDN), as provided by European public telecommunication operators.
This ETS consists of 2 parts as follows:
Part 1: "BVPS for Permanent communications (BVPS-P)".
Part 2: "BVPS for Reserved communications (BVPS-R)".
Transposition dates
Date of adoption of this ETS: 31 August 1995
Date of latest announcement of this ETS (doa): 30 November 1995
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 May 1996
Date of withdrawal of any conflicting National Standard (dow): 31 May 1996

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ETS 300 455-2: August 1995
1 Scope
This European Telecommunication Standard (ETS) defines the stage 1 of the Broadband Virtual Path
Service for Reserved communications (BVPS-R) for a Broadband Integrated Services Digital Network
(B-ISDN), as provided by European public telecommunication operators.
Part 1 of this ETS (ETS 300 455-1 [13]) defines the stage 1 of the Broadband Virtual Path Service for
Permanent communications (BVPS-P) for a B-ISDN, as provided by European public telecommunication
operators.
This ETS does not specify the additional requirements where the service is provided to the user via a
telecommunication network that is not a B-ISDN, but it does include requirements for interworking of other
networks with a B-ISDN.
This ETS is applicable to stage two and stage three standards for the BVPS-R. The terms "stage two" and
"stage three" are also defined in CCITT Recommendation I.130 [4]. Where the text indicates the status of
a requirement (i.e. as strict command or prohibition, as authorisation leaving freedom, or as a capability or
possibility), this shall be reflected in the text of the relevant stage two and stage three standards.
Furthermore, conformance to this ETS is met by conforming to the stage three standards with the field of
application appropriate to the equipment being implemented. Therefore, no method of testing is provided
for this ETS.
Charging principles and management operations are outside the scope of this ETS.
The BVPS-R provides the transfer of unrestricted digital information between T or S T reference
B B/ B
points. It does not preclude the applicability of the BVPS-R to S .
B
The provision of the BVPS-R is based on the use of Asynchronous Transfer Mode (ATM) Virtual Path
(VP) connections in a B-ISDN.
2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] CCITT Recommendation E.164 (1991): "Numbering plan for the ISDN era".
[2] ITU-T Recommendation I.112 (1993): "Vocabulary of terms for ISDNs".
[3] ITU-T Recommendation I.113 (1993): "Vocabulary of terms for broadband
aspects of ISDN".
[4] CCITT Recommendation I.130 (1988): "Method for the characterization of
telecommunication services supported by an ISDN and network capabilities of
an ISDN".
[5] ITU-T Recommendation I.140 (1993): "Attribute technique for the
characterization of telecommunication services supported by an ISDN and
network capabilities of an ISDN".
[6] ITU-T Recommendation I.150 (1993): "B-ISDN asynchronous transfer mode
functional characteristics".
[7] ITU-T Recommendation I.356 (1993): "B-ISDN ATM layer cell transfer
performance".
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ETS 300 455-2: August 1995
[8] ITU-T Recommendation I.361: "B-ISDN ATM layer specification".
[9] ITU-T Recommendation I.371 (1993): "Traffic control and congestion control in
B-ISDN".
[10] ITU-T Recommendation M.3010 (1993): "Principles for a telecommunications
management network".
[11] ETS 300 299: "Broadband Integrated Services Digital Network (B-ISDN); Cell
based user network access; Physical layer interfaces for B-ISDN applications".
[12] ETS 300 300: "Broadband Integrated Services Digital Network (B-ISDN);
Synchronous Digital Hierarchy (SDH) based user network access; Physical layer
interfaces for B-ISDN applications".
[13] ETS 300 455-1: "Broadband Integrated Services Digital Network (B-ISDN);
Broadband Virtual Path Service (BVPS); Part 2: BVPS for Permanent
communications (BVPS-P)".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
Asynchronous Transfer Mode (ATM): See ITU-T Recommendation I.113 [3], definition 204.
broadband: See ITU-T Recommendation I.113 [3], definition 101.
Cell Delay Variation (CDV) tolerance: The CDV tolerance τ corresponds to the maximum anticipated
time variation with respect to the Theoretical Arrival Time, see ITU-T Recommendation I.371 [9],
subclause 2.4.1.1.
Global Virtual Path Identifier (GVPI): The GVPI identifies a specific Virtual Path (VP). It is used by the
Service Management Entity (SME) for the management of the complete VP.
initiating manager: The manager issuing a request to the SME.
Integrated Services Digital Network (ISDN): See ITU-T Recommendation I.112 [2], definition 308.
involved manager: The manager receiving a request issued by another initiating manager.
ISDN number: A number conforming to the numbering plan and structure specified in CCITT
Recommendation E.164 [1].
manager: The functional entity authorised to send through x reference point (as defined in ITU-T
Recommendation M.3010 [10]) the VP registration requests, VP modification requests and interrogation
requests, on behalf of the users to which it is related at the subscription time (see figure A.1).
non-periodic VP: A non-periodic VP is a VP whose values of PBR and Quality of Service (QoS) are
constant for the reservation duration.
Peak Cell Rate (PCR): See ITU-T Recommendation I.371 [9], subclause 2.4.1.1. The PCR is expressed
as an integer number of cells per second.
Peak Emission Interval (PEI): See ITU-T Recommendation I.371 [9], subclause 2.4.1.1.
periodic VP: A periodic VP is a VP whose same scheme of the values of PBR and QoS repeats within
each period for the reservation duration.
service, telecommunication service: See ITU-T Recommendation I.112 [2], definition 201.

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ETS 300 455-2: August 1995
Service Management Entity (SME): The SME is the functional entity to which manager’s VP registration
requests, VP modification requests and interrogation requests are addressed (see figure A.1).
subscriber: The entity that subscribes to the BVPS-R.
time slot: The time interval between the activation and the following deactivation of a VP. The duration of
th
an i time slot De is defined by De = De + M x P where De is the minimum duration of the time
i i min i min
slot, M is an integer and P is a fixed duration of time. De and P are service constants.
i min
user: Each of the subscriber's functional entity that sends or receives ATM cells through T or S T
B B/ B
reference point (see figure A.1).
Virtual Channel (VC): See ITU-T Recommendation I.113 [3], definition 401.
Virtual Channel Identifier (VCI): A logical number that locally identifies a specific VC at the
User-Network Interface (UNI).
Virtual Path (VP): From the user's point of view, a virtual end-to-end connection that ensures
unidirectional or bi-directional transport of ATM cells belonging to VCs that are associated by a common
VPI at each UNI.
Virtual Path Identifier (VPI): A logical number that locally identifies a specific VP at the UNI.
3.2 Symbols and abbreviations
For the purposes of this ETS, the following symbols and abbreviations apply:
ATM Asynchronous Transfer Mode
B-ISDN Broadband Integrated Services Digital Network
BVPS-P Broadband Virtual Path Service for Permanent communications
BVPS-R Broadband Virtual Path Service for Reserved communications
CBR Constant Bit Rate
CDV Cell Delay Variation
GVPI Global Virtual Path Identifier
(N-)ISDN (Narrowband) Integrated Services Digital Network
PCR Peak Cell Rate
PEI Peak Emission Interval
QoS Quality of Service
SME Service Management Entity
SP Service Provider
UNI User-Network Interface
VBR Variable Bit Rate
VC Virtual Channel
VCI Virtual Channel Identifier
VP Virtual Path
VPI Virtual Path Identifier
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ETS 300 455-2: August 1995
4 Description
The BVPS-R permits communication in both directions betwe
...