ETSI TS 185 006 V2.3.1 (2009-05)

ETSI TS 185 006 V2.3.1 (2009-05)
Technical Specification


Telecommunications and Internet converged Services and
Protocols for Advanced Networking (TISPAN);
Customer Devices architecture and Reference Points

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2 ETSI TS 185 006 V2.3.1 (2009-05)



Reference
RTS/TISPAN-05024-NGN-R2
Keywords
architecture, interface
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3 ETSI TS 185 006 V2.3.1 (2009-05)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .5
1 Scope.6
2 References.6
2.1 Normative references.6
2.2 Informative references.7
3 Definitions and abbreviations.8
3.1 Definitions.8
3.2 Abbreviations.8
4 Customer Network Device (CND) classification.9
4.1 Non IMS capable CNDs.11
4.1.2 Non-IP CNDs.11
4.1.2.1 Non-IP CNDs connected to the NGN without a CNG .11
4.1.2.2 Non-IP CNDs connected to the NGN through a CNG.12
4.1.3 IP CNDs.13
4.1.4 SIP IETF capable CNDs .13
4.1.4.1 Non-IMS SIP CND connected to the NGN through a CNG .13
4.1.5 Consumer Electronics.14
4.2 IMS capable CNDs.14
4.2.1 IMS Customer Network Device connected to the NGN through a CNG.14
4.2.2 Consumer Electronics.15
4.3 IMS customer network device architecture .15
4.3.1 The Customer Network Devices- Network Attachment Subsystem entities (CND-NASS) .15
4.3.2 The transfer level functions .16
4.3.3 The transport level functions .16
4.3.4 The Customer Network Devices - Service-related Functional entities (CND-SF) .16
5 Reference Points.17
5.1 Network attachment reference points.17
5.2 Transport level reference points .18
5.3 Service layer reference points .18
6 Authentication issues.19
6.1 CNG based.19
6.2 Non CNG based .21
7 The CND Data Model .22
8 Information Flows.22
8.1 Attachment Flows.22
8.1.1 Example of Information Flows on e .22
1'
8.2 Configuration and management flows.23
8.2.1 Example of management reference point selection .23
8.2.2 Example of Information Flows on e .25
3'
8.3 Signalling flows.26
8.3.1 CND attachment and NGN registration.26
8.3.2 Outgoing call.28
8.3.3 Internal Call.29
8.3.4 Admission Control (CNG-ACF).30
8.4 Remote Access information flows.31
8.4.1 Connection Setup.31
8.4.2 Download of content.33
8.4.3 Upload of content .34
ETSI

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4 ETSI TS 185 006 V2.3.1 (2009-05)
Annex A (informative): Bibliography.35
Annex B (informative): Change history .36
History .37

ETSI

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5 ETSI TS 185 006 V2.3.1 (2009-05)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Telecommunications and Internet
converged Services and Protocols for Advanced Networking (TISPAN).
Introduction
The present document describes the main type of Customer Devices that take part in Customer Premises Network in
terms of general architecture and in terms of reference points with the NGN and CNG.
The present document gives a Customer Devices classification based on services and access technology supported.
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6 ETSI TS 185 006 V2.3.1 (2009-05)
1 Scope
The present document defines the stage 2 Customer Network Devices (CND) specifications, including architectural
building blocks to be included in the Customer Network Devices to support the interworking with control plane NGN
architecture, both for the transport layers (NASS, RACS) and for the service layer. The present document will also
define the reference points between the NGN architectural blocks involved and the corresponding CNDs functions here
defined (for the cases in what the CNG will be transparent for the service and control planes point of view), as well as
between the Customer Network Devices and the CNG when appropriate. The present document will perform, as first
step, a categorization of the different user equipment with reference to the type of service supported and the different
levels of implementation of the related functionalities.
Please note that in relation to the Customer Network Devices for IPTV usage the present document will cover only the
classification step and will not provide any detail about the architecture and reference points. The IPTV CND are
specified in TS 185 009 [i.1].
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI ES 282 002: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); PSTN/ISDN Emulation Sub-system (PES); Functional
architecture".
[2] ETSI TS 183 043: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); IMS-based PSTN/ISDN Emulation; Stage 3 specification".
[3] ETSI TS 182 012: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); IMS-based PSTN/ISDN Emulation Subsystem; Functional
architecture".
[4] ETSI ES 283 003 "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); IP Multimedia Call Control Protocol based on Session
Initiation Protocol (SIP) and Session Description Protocol (SDP) Stage 3 [3GPP TS 24.229
(Release 7), modified]".
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7 ETSI TS 185 006 V2.3.1 (2009-05)
[5] ETSI TS 185 005 "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Services requirements and capabilities for customer networks
connected to TISPAN NGN".
[6] ETSI TS 185 003: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Customer Network Gateway Architecture and Reference
Points".
NOTE: Available at http://www.homegateway.org.
[7] DSL-Forum TR-069 Amendment 1: "CPE WAN Management Protocol".
[8] DSL-Forum TR-104: "DSLHome Provisioning Parameters for VoIP CPE".
[9] DSL Forum TR-106: " Data Model Template for TR-069-Enabled Devices".
NOTE: Available at http://www.dslforum.org.
[10] IETF RFC 3261: "SIP: Session Initiation Protocol".
[11] ETSI ES 282 007 "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); IP Multimedia Subsystem (IMS); Functional architecture".
[12] ETSI ES 282 004: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); NGN Functional Architecture; Network Attachment
Sub-System (NASS)".
[13] ETSI TS 183 019: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Network Attachment; User-Network Interface Protocol
Definitions".
[14] ETSI ES 282 001: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); NGN Functional Architecture".
[15] ETSI TS 131 103: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); Characteristics of the IP Multimedia Services Identity
Module (ISIM) application (3GPP TS 31.103 version 7.3.0 Release 7)".
[16] IETF RFC 2131: "Dynamic Host Configuration Protocol".
[17] ETSI TS 124 229: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); Internet Protocol (IP) multimedia call control protocol
based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3
(3GPP TS 24.229 version 8.2.0 Release 8)".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI TS 185 009: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Architecture and reference points of a customer network device
for IMS based IPTV services".
[i.2] ETSI TS 187 001 (V2.1.5): "Telecommunications and Internet converged Services and Protocols
for Advanced Networking (TISPAN); NGN SECurity (SEC); Requirements".
[i.3] ETSI TR 187 008: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); NAT traversal feasibility study report".
[i.4] ETSI TR 185 007: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Analysis of protocols for customer networks connected to
TISPAN NGN".
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8 ETSI TS 185 006 V2.3.1 (2009-05)
[i.5] ETSI TR 182 005: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); Organization of user data".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
CPN Device: device that is physically installed in the CPN allowing user access to network services; this can be a
Customer Network Gateway with gateway functionalities towards the NGN, or a Customer Network Device being the
end user terminal
Customer Network Device (CND): CPN device enabling the final user to have direct access to services through a
specific user interface
NOTE 1: CNDs can be dedicated to the internet, conversational and audio-video services. But they could be also
Consumer Electronics equipment and other devices which may have nothing to do with these premium
services (e.g. services performing a content sharing within a CPN, typically between a PC and a music
system). CND classification is reported in clause 4.
NOTE 2: For CND classifications see clause 4.
Customer Network Gateway (CNG): CPN device acting as a gateway between the CPN and the NGN
NOTE: CNG is able to perform networking functions from physical connection to bridging and routing
capabilities (L1-L3), but also possibly implementing functions related to the service support (up to L7).
Customer Premises Network (CPN): in-house network composed by customer network gateway, customer network
devices, network segments, network adapters and nodes
NOTE: Network segments are physical wired or wireless connections between customer premises network
elements); network adapters are elements performing a L1/L2 conversion between different network
segments; nodes are network adapters with L3 routing capabilities.
"Multiple" Play Services (can be: double, triple, quadruple, etc.): delivery by a single service provider of different
types of concurrent services to one or multiple users within the same CPN
NOTE: Services can be categorized in the following way: data (e.g. Web browsing, best effort traffic, etc.),
person(s) to person(s) communication, entertainment.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AKA Authentication and Key Agreement
B2BUA Back to Back User Agent
C-BGF Core Border Gateway Function
CND Customer Network Device
CND-A CND-client Application
CND-AtF CND-Attachment Function
CND-CMF CND-Configuration and Management Function
CND-CSMF CND-Communication Services Media Function
CND-LAF CND-Local Authentication Function
CND-NASS Customer Network Devices- Network Attachment SubSystem
CND-NTF CND-NAPT Traversal Function
CND-PPF CND-Plug and Play Function
CND-SC CND-Self Configuration
CND-SF Customer Network Devices - Service related Functional entities
CND-SIP UA CND-SIP User Agent
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9 ETSI TS 185 006 V2.3.1 (2009-05)
CNG Customer Network Gateway
CNG-ACF CNG-Admission Control Function
CNG-AtF CNG Attachment Function
CNG-AuF CNG Authentication Function
CNGCF Customer Network Gateway Configuration Function
CNG-CMF CNG Configuration and Management Function
CNG-LF CNG Location Function
CNG-NFF CNG NAPT and Firewall Function
CNG-PCF CNG Policy Control Function
CNG-PPF CNG Plug and Play Function
CNG-UIF CNG User reference point Function
CPN Customer Premises Network
DB DataBase
DHCP Dynamic Host Configuration Protocol
FXS Foreign eXchange Subscriber
IM CN IP Multimedia Core Network
IMPU IMS Public User identifier
IMS IP Multimedia Subsystem
IP-PBX Internet Protocol - Private Branch eXchange
IPTV Internet Protocol TeleVision
ISDN Integrated Services Digital Network
ISIM IP Multimedia Services Identity Module
LAN Local Area Network
MG Media Gateway
NAPT Network Address and Port Translation
NAS Network Attached Storage
NASS Network Attachment SubSystem
NAT Network Address Translation
NBA NASS Bundled Authentication
NGN Next Generation Network
NTF NAPT Traversal Function
NW NetWork
P-CSCF Proxy Call Session Control Function
PDA Personal Digital Assistant
PES PSTN/ISDN Emulation Sub-system
PLC Power Line Communication
POTS Plain Old Telephone Service
PSTN Public Switched Telephone Network
RA Remote Access
RACS Resource and Admission Control Sub-system
SDP Session Description Protocol
SIP Session Initiation Protocol
SSID Service Set Identifier
STB Set Top Box
UA User Agent
UE User Equipment
UICC Universal Integrated Circuit Card
UPNP Universal Plag aNd Play
UPSF User Profile Server Function
URI Uniform Resource Identifier
URL Uniform Resource Locator
USIM Universal Subscriber Identity Module
WAN Wide Area Network
4 Customer Network Device (CND) classification
The Customer Network Devices connected to the Customer Premises Network can be of different types. The services
supported from each CND depend of the CND's type. In this clause a macro-classification is given. More in general, in
a customer premises network End Devices used by end user, Network Devices to support the CPN infrastructure and
Gateway Devices to connect the Customer Premises Network to the NGN are present.
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10 ETSI TS 185 006 V2.3.1 (2009-05)
End Devices:
The end devices can be divided into two main categories: non-IMS capable and IMS capable.
1) Non-IMS capable devices:
- non-IP device: It can be a POTS (Plain Old Telephone Service) phone that support traditional voice
services and STS (Supplementary Telephone Services) services. It can be connected to the NGN through
the CNG (e.g. in case of PSTN simulation services) or without the CNG (e.g. PSTN emulation services);
it supports the Z interface.
It can be a common ISDN phone supporting the S/T interfaces or also a DECT phone.
- IP device: It is a generic IP based device without any SIP stack. For example: PC, Personal Digital
Assistant (PDA), network printer, Network Attached Storage (NAS), IP-PBX.
In some cases IP devices, such as a PC or PDA, can evolve in an easy way to IMS capable devices.
- SIP Device: It is an IP device with a SIP stack not compliant with ES 283 003 [4] e.g. ietf based
RFC 3261 [10]. For example Videophone, PDA, STB.
- Consumer Electronics: There are a number of consumer electronics equipment that can be connected to
the CPN and they can be IP based or not. Some examples are the Set Top Box (STB), gaming console,
Network Attached Storage (NAS). These devices in some cases do not need a connection with WAN side
and are used for Intra-Customer Environment services.
- Mobile Device: It can be a 2G/3G mobile device that takes part into CPN through a wireless local access
(mobility enable) offered by CNG.
2) IMS capable device:
An IMS capable device is able to register with the IM CN via exchange of SIP messages with the P-CSCF, and
then create/accept/end multimedia IP sessions, in compliance with ES 283 003 [4]. The establishment of a trust
relationship to the IM CN shall be by one of the 3 methods defined in ES 283 003 [4] (by ISIM, or if that is not
present then by USIM, or if that is not present then by device-internal transmission of a private user identity, a
public user identity and a home network domain name).
For authentication issues, see also clause 6.
- Fixed device: It can be a fixed corded phone, dual mode phone (equipped with 2G/3G and
Wi-Fi/Bluetooth), PC, PDA (with IMS client soft phone), IP-PBX.
The dual mode phone (mobile + wireless) is considered as a fixed device when it is attached by
Wi-Fi/Bluetooth.
- Mobile device: It can be a mobile phone or a PC/PDA with 2G/3G interface.
- Consumer Electronics: They can be a STB, Media Servers or media players, etc.
Network Device:
It is a device that can be connected to the CPN infrastructure (e.g. network adapter and nodes as defined in clause 3).
Gateway:
CNG: It is the Customer Network Gateway to access the NGN side, as specified in TS 185 003 [6].
Table 4.1 classifies the customer devices in order to support the use case define in TS 185 005 [5]. Moreover the CNDs
are related to a number of possible local physical interfaces: FXS, Ethernet, Wireless (with or without mobility), where
mobility is defined as service and session continuity independently from the location.
In case of wired local access, both analogue and digital access are considered. Wired digital includes Ethernet and other
technologies.
In table 4.1 the "X" means that the CND may be able to support a service or that local physical interface.
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11 ETSI TS 185 006 V2.3.1 (2009-05)
Table 4.1: Customer Network Devices classification
Device Services CPN interfaces
Non IMS
capable
Non IP X   X X X
(e.g., POTS,
ISDN phone)
IP X  X X X
(e.g. PC, PDA,
IP-PBX, NAS,
Printer)
SIP X X X  X X X
(e.g.
VideoPhone,
PDA, STB)
Consumer X  X X X
Electronics
(e.g. STB,
gaming console,
NAS)
Mobile 2G/ 3G X X    X
Phone
IMS capable
Fixed X X X X X X X X X
(e.g. Fixed
phone, multi
mode phone,
PC, PDA (with
IMS client soft
phone),
IP-PBX)
Mobile (mobile X X X X X X  X
phone,
PC/PDA with
2G/3G itf
Consumer  X  X X X
Electronics
(e.g. STB, etc.)

The CNDs related to IP-TV are specified in TS 185 009 [i.1].
4.1 Non IMS capable CNDs
4.1.2 Non-IP CNDs
The non-IP devices include the POTS phone and ISDN devices; these type of devices can be connected to the NGN
through the CNG or directly. In any case, the architecture of these devices is out of scope of the present document. The
voice services on POTS/ISDN devices can be done in emulation [1], [2] and [3] or simulation mode on NGN. In next
clause the impact on customer premises network is analyzed for both modes.
4.1.2.1 Non-IP CNDs connected to the NGN without a CNG
In this case the POTS and ISDN device is connected to the MG (Media Gateway) [3] via the Z interface for voice
services, as shown in figure 4.1. In case of data services, for ISDN device, the S/T interface is needed.
The case of voice services for POTS/ISDN in PES scenario is shown in figure 4.1.
ETSI
Customer
Network
Device Type
Communi-
cation
service
Data service
Video
Streaming
Presence
Messaging
Intra-
Customer
Environment
Wired
analogue
Wired digital

Wireless not
enabling
mobility

Wireless
enabling
mobility

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12 ETSI TS 185 006 V2.3.1 (2009-05)
POTS
MGW
TISPAN PSTN/ISDN
Emulation Subsystem
Z
ISDN
AGW
AGF
S/T
Customer Premises
Network

Figure 4.1: Non-IP CNDs connected to the NGN network without a CNG (PES scenario)
The case of voice services for POTS/ISDN supported in the Core IMS scenario is shown in figure 4.2.
POTS
VGW
IMS Core
Z Gm
ISDN
VGW
S/T
Customer Premises
Gm
Network

Figure 4.2: Non-IP CNDs connected to the NGN network without a CNG (Core IMS scenario)
4.1.2.2 Non-IP CNDs connected to the NGN through a CNG
In this case, the CNG includes all the CPN functionalities necessary to fulfil a service between the analogue or ISDN
phone and the NGN network. The voice services can be based on PES or Core IMS scenario. The det
...