Short over

1. I TU-T Kaleidoscope 2010
Beyond the I nternet? - I nnovations for
future networks and services
SI P Trunking
The route to the new VoI P
Services
I van Gaboli, Virgilio Puglia
I taltel SpA
I van.Gaboli@ italtel.it
Virgilio.Puglia@ italtel.it
Pune, India, 13 15 December 2010

2. N ot e s
This presentation is derived from a paper accepted for
presentation at the ITU-T " Beyond the Internet ? Innovations for
future networks and services" Kaleidoscope 2010 Conference,
Pune, India, http://itu-kaleidoscope.org/2010
The presentation and the article represent the opinion of the
Authors and does not imply any endorsement of said opinion by
the Organizer
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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3. SI P Bu sin e ss Tr u n k in g Ar ch it e ct u r a l
M ode l
SIP- I
NGN
AS AS Class 5
Softswitch
ISUP
PSTN/PLMN
Media
SIP
Network Border Elements
Public Domain
Private Domain
Customer Border Elements Customer Border Elements
AS
CN IP- PBX
IP- PBX IP- PBX
Very Large Enterprise Medium/Large Enterprise
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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4. N e t w or k Ele m e n t s
Public Domain
Applications Servers
Class 5 Softswitch
Media Gateways
Network Border Element
Private Domain
Corporate Border Element
Corporate Switching Node
Application servers
IP PBXs
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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5. N e w w or ld of se r vice s
Mobile Enterprise
Mobile office
User ubiquity
Any-Device, Any-Time, Any-Where
Unified communication & collaboration
Unified messaging
Telepresence
Document sharing
Virtual meeting rooms
Web 2.0
Social Media Networks
Presence Federation
Co-opetition & Mass creativity
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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6. I n n ova t ion Fie lds
Security
Secured channels
Data confidentiality
Network reliability
Governance
Simplified network management
Managed services
Easy customization
High performance
User autonomy (Self-Care portals)
Sustainability
Virtualization
Ecology
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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7. Ba sic Ca ll Se t u p Flow
CSN
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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8. SI P Bu sin e ss Tr u n k in g Sign a lin g
M ode l
ISDN Like
Signaling is decoupled by IP-PBX and Media is
anchored by the IP-PBX using a Media
Termination Function to emulate a PBX
behaviour
Pure SIP
Signaling goes peer-to-peer between IP-PBXs
Hierarchic
Signaling between IP-PBXs is manipulated by a
centralized harm onizat ion funct ion (HF) that
can also anchor the media
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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9. SI P Bu sin e ss Tr u n k in g Sign a lin g
M ode l
Class 5
Class 5 Class 5
Softswitch
Softswitch Softswitch
HF
IP- PBX IP- PBX IP- PBX IP- PBX IP- PBX IP- PBX
MTP MTP
ISDN- Like Pure SIP Hierarchic
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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10. SI P Bu sin e ss Tr u n k in g - Use r Pla n e
M ode ls
Fixed Media RTP is anchored by IP-PBX
The core network it is not affected by media
changing related to services invocation
IP-PBX needs a Media Termination Function to
perform media anchoration
Variable Media RTP is peer-to-peer
The core network must manage all the RTP
negotiatons due to user services invocation
IP-PBX can implement various type of services
and use several types of codecs
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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11. Pu r e SI P M ode l Se r vice in voca t ion
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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12. Go t o m a r k e t a ppr oa ch
Full Jacket
Pre-packaged solution
Low customization
High reusability
Customer Tailored
High customer requirements compliancy
High customization possibility
High costs for deployment and
certification
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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13. Se r vice s En a ble r Fe a t u r e s
To im plem ent New Services t he net work
m ust leverage t he following capabilit ies:
Identity management & certification
Voice-Video codec/rating adaptation
Signaling harmonization
Security & Encryption capabilities
Management of specific peculiarities
Accounting capabilities
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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14. Se r vice s En a ble r D e vice
I DAD I nt er- Dom ain Adapt at ion Device
Interdomain features harmonization
Signaling decoupling & normalization
Media Anchoring
Dynamic Audio/Video transcoding/Transrating
Session Admission Control
Fax adaptation
DTMF interworking
Encryption termination
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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15. I D AD M e dia An ch or in g
Media Anchoring
No Media Anchoring
Class 5
Class 5 Softswitch
Softswitch
IDAD
BE BE
BE BE BE BE
IP- PBX IP- PBX IP- PBX IP- PBX
Enterprise A Enterprise B Enterprise A Enterprise B
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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16. I n t e r dom a in fe a t u r e s h a r m on iza t ion
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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17. N e t w or k Se m plifica t ion
A measure of complexity can be assessed
in proportion to the possible combination of
all the devices involved.
When a new domain is added, the
complexity with IDAD is significantly minor
than without:
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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18. SI P Bu sin e ss Tr u n k Be n e fit s
Fast provisioning
High performance & reliability
Governance
Cost savings
Replacement of local telephone connections with VoIP
gateways
Reduction in IT operating costs
Growth
More efficient communications platforms
Improved services
Smart migration
Acceleration of communications processes for greater efficency
Support for community and semi-formal teams
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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19. Le sson le a r n e d
Facts
SIP Trunking will permit creation of new
services for VoIP business market
Standardization facilitates interoperability
Manufacturers extend standards with
proprietary customization to provide new
services
I DAD is t he t rade- off bet ween t im e t o m arket
and st andardizat ion.
Pune, India, 13 15 Dec 2010:
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20. Back Up Slide
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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21. Ba sic Ca ll Se t u p Flow
Private Domain Public Domain
Custom ICT CSN SIP SIP SIP H.248 ISUP
IP Phone IPPBX CSN BE BE SSW-C5 MGW PSTN
Skinny
ICT
1. INVITE (no SDP)
2. 100 Trying 3. INVITE (no SDP)
4. 100 Trying 5. INVITE (no SDP)
6. 100 Trying
7. IAM
8. ACM
9. CRCX
(g711, g729, T.38)
10. OK (g729)
11. 180 ringing
12. 180 ringing (g729, sendrcv)
13. 180 ringing (g729, sendrcv)
(g729, sendrcv)
ICT
Skinny
14. PRACK
(g729) 15. PRACK
(g729) 16. PRACK
(g729)
17. 200 OK
18. 200 OK
ICT 19. 200 OK
RTP RTP
RTP (Ring Back Tone)
15. ANM
20. 200 OK (g729)
21. 200 OK (g729)
22. 200 OK (g729)
ICT
Skinny
23. ACK (g729)
24. ACK (g729)
25. ACK (g729)
RTP RTP RTP
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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22. Pu r e SI P M ode l Se r vice in voca t ion
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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23. H ie r a r ch ic M ode l - Se r vice I n voca t ion
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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24. I TU St a n da r diza t ion vs I D AD
The strengthening of the standards is the main way to
go forward for multi-vendor interoperable solutions,
but it s a must also consider the presence of several
small/medium players that perform customization to
provide services.
I DAD is t he t rade- off bet ween t im e t o m arket and
st andardizat ion.
Pune, India, 13 15 Dec 2010:
ITU-T Kaleidoscope 2010 Beyond the Internet? Innovations for future networks and services
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