voip @ mix april 20071 voip project at mix status update mauro magrassi [email protected]
TRANSCRIPT
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
VOIP @ MIX April 2007 5
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
VOIP @ MIX April 2007 9
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.)
VOIP @ MIX April 2007 12
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
VOIP @ MIX April 2007 16
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
VOIP @ MIX April 2007 17
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 (?)
VOIP @ MIX April 2007 19
Thank you!
• Web www.mix-it.net
• General info [email protected]
• Adminstration [email protected]
• Tech Dept [email protected]
• Tel +39 02 4091 5701
• Fax +39 02 4091 5693