VOIP @ MIX April 20071 VOIP Project at MIX Status Update Mauro Magrassi [email protected].

VOIP @ MIX April 2007 1

VOIP Project at MIX

Status Update

Mauro Magrassi

[email protected]

VOIP @ MIX April 2007 2

VOIP Project Background

• Conceptual thinking 2005, project starts in 2006

• Infrastructure Eco-system beneficial to VOIP peering adoption/growth

• Bring new potential Operators into NAPs aside ISPs

• Facilitate VOIP interconnection between large and small VOIP players

• Hard to burst new services on VOIP without critical mass

VOIP @ MIX April 2007 3

Issues

Huge Inertia of VOIP-TDM-VOIP interconnection solutions on technical side

Huge Inertia in changing Accounting and Billing Systems

Market still highly consolidated and not keen to move

Lack of stable VOIP interconnection standards (VOIP signaling, cross-border IP QoS etc. )

Regulation aspects (lawful intercept nightmare , log retention, unclear government position, license fee schemes)

Huge difference in nature between VOIP players (NGN networks ‘Infrastructure-based’ Vs. ISPs Internet-based)

VOIP @ MIX April 2007 4

Still…why not Open Internet (and then through IXP)

• Common DoS : ping flood, smurf, PoD• Layer 4 attacks :syn & udp flood, queue overflows• Layer 5 attacks : buffer overflows over application

stacks of signalling protocols• Intra-provider QoS

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Project Testing Phase: 2006

• Several different Interconnection Scenarios strategy

• Testing activity: Focus on basic voip services interoperability tests

• Huge debate on Numbering (geographical, 6, 5…)

• Carrier ENUM introduction

• DTMF and T.38 initial testing

• Monitoring, management and accounting support platforms testing

• Project Dissemination

VOIP @ MIX April 2007 6

2006 Approach

QuickTime™ e undecompressore TIFF (LZW)

sono necessari per visualizzare quest'immagine.

VOIP @ MIX April 2007 7

2006 Approach

• Several ways to interconnect: flexible but…

• Hard to scale

• Not easy to manage

• Replicating MIX basic services

VOIP @ MIX April 2007 8

Project Status (March. ’07)

• 12 Voip Providers connected

Eutelia Infracom TLC Netscalibur KPNQwest ItalyIntercom I.net NGIULI FastwebTiscali McLinkMetrolink Elitel

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Make it simpler: define only one interconnection scenario where each Voip network interconnects to the MIX shared SBC cluster via a dedicated REALM

VOIP@MIX 2007: progress

VOIP @ MIX April 2007 10

REALM

• MIX Nextone SBC can be configured in a multi-tenant scenario

• The Realm is the cornerstone feature: a virtual (802.1q) or

physical port can be associated to a given voip network, a signaling gateway and a media gateway ip can be dedicated on the SBC for that network using IP addresses belonging to that backbone; a default gateway over the network has to be provided to the Realm virtual routing instance

• One-fits-all, and also nomadic players (ISP) are facilitated

VOIP @ MIX April 2007 11

New Stuff

• Dedicated Switching Environment

• Prefix based routing convention based upon AIIP (Italian National Internet Provider Association) Opcode

• Management Platform Testing

• FOCUS: facilitate interconnection between big players and Small-medium ISP (regionals, WISP etc.)

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VOIP @ MIX: Scenario

VOIP @ MIX April 2007 13

Nomadic Services Scenario

VOIP @ MIX April 2007 14

New VOIP @ MIX: Advantages

• Full IP decoupling between connected networks• For members, (can be) only configware• Fits well the shared ethernet nature of an IXP• Nicely follows a ‘buy then make’ growth model for VOIP (so

that scalability should not be our biggest issue)• Very flexible, still with respect to 2006 version • Allows IXP to remain a ‘point’• No Ip routing whatsoever• QOS handling decoupled and facilitated between different

backbones• Helpful for the ‘Nomadic’ service providers

VOIP @ MIX April 2007 15

• Simple scheme:

• Infrastructure Costs (one off)• VOIP Traffic management costs (recurring)

Infrastructure costs: switch port(s), VLANs, SBC Realms

Traffic costs: A fee based upon simultaneous calls license

Still, SBC to SBC is possible, but is already a MIX std service….

Costs

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Traffic Costs: Tier approach

License for N simultaneous calls every technical feature on signaling manipulation available excluding any form of media transcoding, are defined as follows:

I. Tier 0 :10 simultaneous callsII. Tier 1: 30 simultaneous callsIII. Tier 2 : 50 simultaneous callsIV. Tier 3 : 70 simultaneous callsV. Tier 4 : 100 smultaneous calls

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2007 Costs

• Infrastructure: 120 euro per month, free for IP peering members

• Price per simultaneous call: Tier 0. – 2,70 Euro /m Tier 1. - 2,65 Euro / m Tier 2 - 2,60 Euro / m Tier 3. - 2,50 Euro / m Tier 4. - 2,40 Euro / m

VOIP @ MIX April 2007 18

Developments

• Interoperability of SIP presence, instant messaging and IP videocalls;

• Stable support for DTMF, T.38 and data calls over Voip

• CDR Neutral Accounting

• Emergency Numbers access from Nomadic VOIP users

• Long Distance web marketplace

• Centralized VOIP Lawful Intercept (?)

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Thank you!

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