Benefits of VoIP Peering in a Challenging Economy
(SP-10)
Tuesday - 02/03/09 4:00-4:45pm
Mark Benisz, VP Americas, XConnect Global Networks
Agenda
• VoIP Peering in a challenging Economy• Best practices for NGN interconnects: bilateral,
multilateral and federated • Registry vs. Signaling approaches to peering • Number portability and ENUM • Regional and Global Peering trends • How peering enables new high margin services:
video, high quality audio • Commercial benefits and case studies
IP Communications & NGN Adoption
Voice over Broadband Adoption – Residential Lines
EU
USA
0
5
10
15
20
25
30
35
2004 2005 2006 2007
Mil
lio
ns
of
Su
bs
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be
rs
Intermediate Result: VoIP/NGN Islands
VoIP /NGN Service
Providers
Global Enterprises
Cable VoIP Services
3G Mobile / IMS
Web based VoIP services
PSTN
Today’s Telephony Challenge How to get all the disparate pieces of the global
network puzzle working together?
Peering brings all the parts together Enable groups of service providers to multi-laterally exchange calls with each other via IP, based on a set
of administrative terms for settlement, policy and interconnection
Best Practices for NGN Interconnects
• Bilateral– Resource intensive– Not scalable
• Multilateral– One interconnect– Possibility of one commercial contract– Minimal use of internal resources
• Network upgrades
• Federated– Members control policy
• Trust• Commercials
Registry vs. Signaling Functions
Registry• identifies service provider or
entity– identify actual egress point– Optimize routing
• Enables most efficient routing mechanism– voice– video– push-to-talk– SMS – new IP features
Signaling• Enables scalable
interconnection• Signaling Hub
– Enables signaling management
– multi-protocol,
Challenges
Standard IP Peering / Connectivity - Public, Private, Ethernet
Physical Transport
Which calls terminate to another VSP, and where should they be routed?
Discovery / Location(ENUM Registry)
How can signalling interoperability be ensured with different protocols, variants & implementations?
Signalling Interoperability
Who should calls be received from & on what basis? How to protect subscribers from abuse (SPIT, vishing)?
Policy, Trust & Security
NAT traversal and codec incompatibility
Media Handling
Based on policy and traffic profiles, should calls be settlement-based or settlement-free (Bill & Keep)?
Commercial
LNP and ENUM
• Number portability (local, mobile or full) is now available in US, Canada, Mexico and Brazil– All Call Query (ACQ) – Central Registry Approach– Call Forwarding Approach– Typically delivered via SS7/ C7
• ENUM Registries– Private routing, public registry, carrier ENUM via ACQ– Can be LNP corrected– Enables expansion of ACQ to other Registry information beyond NP
• Features supported (video, wideband codecs, Presence) • Call forwarding, call forking, non-traditional number plans
Regional and Global Peering trends
Regional •Netherlands - JCC MSO peering
•Brazil - VoIP peering federation
•UK - BT IP Exchange
•USA - Cablelabs
Global•GSMA
•i3 Forum
•Peering Service Providers
New High Margin Services
High fidelity audio
Video telephony
IM integration
Vanity Numbers/ DIDs
Not just low cost voice
Peering to IM Service Providers
• Differentiate service from PSTN• Peer VoIP Networks with voice-enabled IM
communities.• Call IM communities – by dialing a numeric phone
– IM user can call back whenever they want. – Discover/Provision IM buddy numbers
• using a web page.
• Number assigned to the IM client can be:– private number– conventional e.164 number