VoIP Peering Architecture and Strategies

1
VoIP Peering Architecture and Strategies

• The Voice Peering Forum
• 5 December 2007
• Jim.Dalton_at_TransNexus.com

2
Architecture Strategies

• Inter-Exchange Carrier Model
• Simple Federation Registry
• Advanced Federation Registry
• GSMA IPX

3
Inter-Exchange Carrier Model

• Benefits
• Simple operation one connection provides access
  to many networks
• Transcoding
• One bill
• Limitations
• Higher prices
• SBC bottleneck can limit services

Peer 1
Peer 6
Peering Service Provider
CDRs
CDRs
CDRs
Peer 2
Peer 5
Session Border Controller
CDRs
CDRs
Peer 3
Peer 4
CDRs
CDRs
4
Simple Federation Registry
Peering Service Provider

• Benefits
• Single route lookup provides access to many
  networks
• Peer to Peer transmission
• Limitations
• Many bilateral billing contracts
• Security and access control

Peer 1
ENUM Directory
Peer 6
CDRs
CDRs
Peer 2
Peer 5
CDRs
CDRs
Peer 3
Peer 4
CDRs
CDRs
5
Advanced Federation Registry

• Benefits
• Single route lookup provides access to many
  networks
• Peer to Peer transmission
• Multi-lateral Clearing Settlement
• Limitations
• Security and access control

Multi-lateral Clearinghouse
Peer 1
Peer 6
CDRs
CDRs
Peer 2
Peer 5
CDRs
CDRs
Peer 3
Peer 4
CDRs
CDRs
6
GSMA - IPX

• GSMA 700 operators, 2 Billion subscribers
• IPX is an IP extension of the GRX- Global Roaming
  Exchange

7
GSM-A IPX

• Benefits GSMA IPX Does everything.
• Limitation Is it possible?

8
Experiences To Date

• Public ENUM concept is dead.
• Peering Service Providers that are Inter-Exchange
  Carriers are perceived as IXCs.
• Arbinet, Intelepeer (VoEX), XConnect
• Adoption of Peering Federation Solutions offered
  by Telecom Infrastructure providers has been
  slow.
• Neustar, Verisign
• The Market is still searching for the right VoIP
  peering model.

9
Future Trends to Watch

• Industry Cooperatives
• GSM Association
• CDMA carriers
• The VPF
• Regulation
• UK specifications for VoIP interconnect
• Consolidation
• Seems unlikely in the near term
• Independent Alternative
• Open source software could be a factor
• Non-Telecom players could be a factor