Managing, Ordering, Distributing, Exposing, & Registering telephone Numbers

The information below is for an old version of the document
Document Proposed charter Managing, Ordering, Distributing, Exposing, & Registering telephone Numbers WG (modern) Snapshot
Title Managing, Ordering, Distributing, Exposing, & Registering telephone Numbers
Last updated 2015-06-03
State Start Chartering/Rechartering (Internal IESG/IAB Review) Rechartering
WG State Active
IESG Responsible AD Adam Roach
Charter Edit AD Alissa Cooper
Send notices to "Tom McGarry" <>, "Steve Donovan" <>, "Alissa Cooper" <>,


The MODERN working group will define a set of Internet-based mechanisms
for the purposes of managing and resolving telephone numbers (TNs) in an IP
environment.  Existing mechanisms for these purposes face obsolescence as the
voice communications infrastructure evolves to IP technology and new
applications for TNs become possible.  The traditional model of a TN having an
association to a single service provider and a single application is breaking
down.  Its use as a network locator is going away, but its use as an identifier
for an individual or an organization will remain for some time. Devices,
applications, and network tools increasingly need to manage TNs, including
requesting and acquiring TN delegations from authorities.  A sample of problems
with existing mechanisms include:

- lack of flexibility (for example, it can be difficult to add fields without a
very elaborate and lengthy process typically spanning years)

- lack of distribution (for example, it is hard or impossible to have more than
one administrator for each database)

- complexity (leading, for example, to a fair amount of rural call completion
problems which aren't helped by small providers struggling to keep numbers

- difficulty of adopting more modern allocation (e.g., "blocks" of 1)
and porting mechanisms

The working group will define an information management framework for the roles
and functions involved in associating information with one or more TNs in an IP
environment.  The working group will also identify protocol mechanisms to
support the interactions between the functions defined by the framework. This
includes either recommending or defining protocol mechanisms for acquiring,
associating and resolving TNs, with a preference for use of existing protocol
mechanisms. The protocol mechanism for acquiring TNs will provide an enrollment
process for the entities that use and manage TNs. TNs may either be managed in
a hierarchical tree, or in a distributed registry.  Privacy of the managed data
and security of the resource will be primary considerations.  The protocol
mechanism for resolving TNs will allow entities such as service providers,
devices, and applications to access data related to TNs.  Maintaining
reliability, real time application performance, security and privacy are
primary considerations.  The working group will take into consideration
existing IETF work including ENUM, SPEERMINT, DRINKS and SCIM.

The work of this group will focus on TNs, as defined in RFC3966, and blocks of
TNs, that are used to initiate communication with another user of a service.
The work is motivated by the changing telecom environment and interest
expressed by telecommunications industry regulators to support more flexible
regulatory models than exist today.   There is an expectation that aspects of
the architecture and protocols defined by the working group will be reusable
for other user-focused identifiers.  Any such extensions or reuse of MODERN
mechanisms are out of scope for the MODERN working group. Solutions and
mechanisms created by the working group will be flexible enough to accommodate
different policies, e.g., by different regulatory agencies.

The work group will deliver the following:

- An architecture overview, including high level requirements and
security/privacy considerations

- A description of the enrollment processes for existing and new TNs including
any modifications to metadata related to those TNs

- A description of protocol mechanisms for accessing contact information
associated with enrollments

- A description of mechanisms for resolving information related to TNs