Implementing Telephone Numbers for VoIP

1
Implementing Telephone Numbers for VoIP
presentation to North American Numbering
Council 15 March 2005 Washington DC USA

• Tony RutkowskiVice-President of Regulatory
  Affairsmailtotrutkowski_at_verisign.com
• Tom KershawVice-President of VoIP
  Servicesmailtotkershaw_at_verisign.com

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The Relevant Immediate Requirements

• we require VoIP E.164 number users
• to comply with
• the Commissions other numbering utilization and
  optimization requirements
• numbering authority delegated to the states, and
• industry guidelines and practices (See 47 C.F.R.
  Part 52)
• including filing the Numbering Resource
  Utilization and Forecast Report (NRUF)
• to file any requests for numbers with the
  Commission and the relevant state commission at
  least thirty days prior to requesting numbers
  from the NANPA or the PA
• --FCC SBCIP Order, 1 Feb 2005
• Numbering Administration. 47 USC 251(e)

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Part 52 - Numbering
4
Numbering Dependencies regulatory and operational

• National Security and Critical Infrastructure
  Protection
• priority access during or after disasters (NS/EP)
• public safety emergency and law enforcement
  assistance (CALEA)
• network attack mitigation (NS/EP)
• Consumer Requirements
• consumer emergency calls (E112/E911)
• consumer protection and privacy (Do Not Call
  CANSPAM)
• authenticated caller or sender identification
• disability assistance (TRS)
• universal service
• Competition and Settlements Requirements
• number portability (1996 Act)
• service interoperability (Computer III)
• intercarrier compensation (ICF)
• Operations Requirements
• service provider coordination
• fraud detection and management
• default service and routing options
• transaction accounting

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Architecting viable solutions for numbering
systems
NGN IP-Enabled Internet
PSTN/CMRS SS7 Internet
Number Resolution
Includes border gateway resolvers, ENUM
resolvers,
LERG
800
ResolutionServices
ResolutionServices
ResolutionServices
G/W
ResolutionServices
NPAC
Others
Number Directories
LIDB
IRIS-EREG
G/W
DA
6
Needed Numbering Related Capabilities

• In the SS7 signalling infrastructure
• Ability to discover, resolve, and use VoIP
  telephone numbers
• Need identify the number as VoIP and propagate
  the gateway information
• Ability to discover and access VoIP number
  directories
• Need identify the number as VoIP and propagate
  the directory information
• In the IP-Enabled signalling infrastructure
• Ability to discover, resolve, and use VoIP
  telephone numbers
• Need accommodate multiple platforms and
  implementations
• Ability to discover and access VoIP number
  directories
• Need generic capability. IRIS-EREG does this,
  but needs North American specific regulatory and
  operational extensions plus explicit discovery
  mechanism
• Need gateway arrangements between IRIS and SS7
  based directory systems

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Needed Steps

• ATIS Industry Numbering Committee (INC) and
  potentially other ATIS standards bodies to
  develop definitive operational requirements
• ATIS Working Groups to develop needed standards
• Most urgent standards have a high priority
• NANC review of any policy issues with INC
  platform, provides advice to the Commission
• Commission adopts needed requirements in 99-200
  and 04-36 proceedings

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Numbering Developments Worldwide

• Meta
• Large-scale focus on Next Generation IP-Enabled
  Network (NGN) frameworks, capability sets,
  architectures, operational requirements, and
  standards
• Includes ITU-T, ETSI, 3GPP, Parlay, ATIS, TIA,
  Cable Labs, IETF, OASIS, etc
• Global ITU-T
• Study Group 2
• E.164 implementations
• Not much ENUM takeup, no apparent interest in
  public ENUM
• Continuing domain, security and control issues
• Significant Asia-Pacific region ENUM experiments
  appear to be all VPN-based, emulating existing
  SS7 Intelligent Network infrastructure
• Possible other number bases, e.g., E.212, could
  be used for communication
• Number portability recommendation stalled
• E.FIND directory service work approved as
  correspondence group (see annex)
• Study Groups 4 and 17
• M.1400 unique global provider identifier
  initiative (ICC OCC in U.S.) expansion to
  include all providers and considering rapid
  resolution capabilities
• Key emerging global issue geographic
  relationship of numbers
• In a nomadic as well as VoIP world, substantial
  geographic portability is unavoidable
• Jurisdictions (countries and locals) need to
  consider how to accommodate and manage the use
  effectively