VoIP trends in Fixed Network Operators

Petros Sarantopoulos

Carrier Networks Control SIEMENS GREECE

VoIP trends

Agenda

 Standardization MSFORUM / ETSI TISPAN

 Towards Class-5 VoIP

ETSI NGN –

Overview Standardization Activities

The ETSI TISPAN working group started to work on the NGN Architecture in December 2003:

 TISPAN = Telecommunications and Internet

converged Services and Protocols for Advanced

Networking

Focus on enhancing the IMS 3GPP for fixed line access

Will (some want) for PSTN / ISDN Replacement

Support of Advanced Multimedia Services

TISPAN Release 1:

Target of TISPAN NGN architecture:

New end-user services for SIP users independent of access method

Converged Address Book Push and Talk,

IM* and Chat

Converged Centrex Services Video Telephony and Entertainment Dual Mode Handsets Voice over IP

Seamless services between fixed and mobile users will be the key for operators to gain an edge over competitors.

...

...

Exploiting synergies with a converged infrastructure based on IMS … Authentication Specific Billing Specific database & integration per application Specific O&M Authentication Specific Billing Specific database & integration per application Specific O&M Single sign-on One Billing Common network integration & global user database Common O&M …

Separated mobile and fixed domains

Today: - repeated vertical integration - replication of functions

- lack of correlations - no synergies

Common application and session control layers

IMS: one-time integration

Application 1 … n Application 1 … n

FMC network architecture –

common connectivity for all types of subscribers

CSCF PLMN PSTN Fixed IP Clients Mobile IP Clients R-MGF MGCF Presence Messaging Applications Legacy Interworking IP Multimedia Subsystem (IMS) - Session control

Subscribers

CSCF: Call Session Control Function HSS: Home Subscriber Server

MGCF: Media Gateway Control Function A-MGF: Access Media Gateway Function T-MGF: Trunk Media Gateway Function R-MGF: Remote Media GW Function

IP phone POTS/ISDN Fixed TDM Clients PBX POTS/ISDN A-MGF HSS _T-MGF

Starting today with existing applications (e.g. fixed VoIP, Mobile data IMS services) and moving to standardized fixed-mobile applications

IP domain TDM domain

Agenda

 Standardization MSFORUM / ETSI TISPAN

 Towards Class-5 VoIP

VoIP evolution path

Field proven VoIP applications

Class 4 VoIP networks

VoIP over Cable networks following (Euro) PacketCable standards Voice over Broadband (2nd line service with reduced features)

New VoIP application cases gaining popularity:

 Class 5 VoIP networks via 2 alternative methods

EMULATION: H.248 / V5.2 VoIP centralized Access gateways

(with/without ADSL/GPON) for VoIP Class-5 without changing end-user equipment

Drivers towards Class-5 in VoIP

Commercial drivers

Carriers focus again on the neglected residential segment for universal service obligation or advanced services

Outdated access voice equipment / poor local loop status in some carriers

Local loop competition , VoIP usage beyond cheap transport for long-distance

Metro Ethernet and IP/MPLS networks available / planned in most carriers Technical enablers

Access gateways for VoIP Class 5 without changing end user equipment: Metropolitan and Rural scenarios.

SIP Endpoints for “Voice over Broadband” / FMC scenarios. Multimode SIP terminals (DSL, WiFi, VoIP, WiMAX, GSM/UMTS combinations) for mass market expected by terminal vendors.

Session Border Controllers for security

Video OLT OLT-V Switch Trunk Gateway H.248 H.248/_MGCP SoftSwitch VoIP 1.25G-2.5 G 622 M/1.25G/2.5G VoIP (H.248)

DS1/E1 // Leased Lines

Application case: VoIP capable GPON/DSL Solution

Remote VoIP line units (Access Gateways) for 8-160 subscribers per village with:

 Satellite feed

 H.248 Softswitch control

Application case: Rural coverage via Class-5 VoIP

Brazil: Telemar

Telemar: Incumbent Operator in Brazil Requirement/ Motivation:

Voice service for rural areas

Carrier IP Backbone xDSL Cable TV POTS Phone VoIP adapter Broad-band Modem (*) Softswitch VoIP platform

Application case: Enhanced Consumer VoIP over broadband (xDSL, HFC) STP PSTN SS7 Trunk VoIP gateway SIP, NCS/ MGCP TGCP/ MGC_{P, H} .248

(*) Modem could include VoIP adapter (1-box solution): eMTA (Cable), IAD (ADSL)

+ Lawful Interception

+ Number portability

+Emergency call routing

WiMAX Base Station Data WiMAX CPE (*) Radio Access Network

Application case: VoIP Solution with WiMAX

Trunk GW SIP Voice Application Server MGCF, SGW SIP H.248/ MGCP ATA E1/STM-1



Assumes non-integrated VoIP in CPE IP/MPLS

Backbone

Signalling Path (in Red) : Access and Trunk using VoIP

Voice Bearer Path (in Blue) : Example of WiMAX VoIP call to PSTN GbE



Parameters for the optimal solution for Class-5

Services

Operations as ILEC, CLEC, Mobile, Cable, ISP

IMS / Fixed Mobile Convergence applicability

Regulatory framework (e.g. Lifeline support, Lawful interception, LLU conditions)

Existing TDM Class-5 services support , 1st _{or 2}nd _{line service}

Multimedia services support

Network status

Outside plant status

Network size, Application case for Rural or Metropolitan

Planned DSL penetration

Application case

CAPEX (full chain: subscriber, exchange, cabling, transmission)

OPEX, Management simplicity

VoIP terminal availability, price, lifecycle, mass market considerations

Agenda

 Standardization MSFORUM / ETSI TISPAN

 Towards Class-5 VoIP

Time Revenue

Smart Home services will be one of the most

significant services to boost profits Declining voice revenues Beyond VoIP@Home:

Addressing new customer demands with attractive new applications

Video

Communication _ControlHome Healthcare_{Services Security}Home

…

Example: Unified user experience for Home Control

Smart Home on TV

(Set Top Box)

Smart Home on

Mobile Phone

Smart Home on

Evolution towards Smart Home services

At Home Remote via WEB