Data for Reachability of Inter/tra-NetworK SIP
charter-ietf-drinks-03

The IETF has been working on various aspects of SIP-enabled Multimedia
  administrative domains among SIP Service Providers (SSP's). SSP's are
  entities that provide session services utilizing SIP signaling to their
  customers. In addition, the IETF has done significant work on data
  exchanges among various network elements.
  
  The DRINKS working group is chartered with a scope that is orthogonal to
  SPEERMINT and ENUM. The protocol work of DRINKS will be designed to
  build from the work of SPEERMINT and ENUM to identify and define the
  data structures and data exchange protocol(s) among SIP based Multimedia
  administrative domains.
  
  The ENUM working group is specifically chartered to develop protocols
  that involve the translation of E.164 numbers to URIs. While the
  SPEERMINT working group has been chartered to develop requirements and
  best current practices among real-time application SSPs and to describe
  how such services may best interconnect across administrative
  boundaries.
  
  These administrative domains may be of any practical size and could be
  any type of SSP, such as recognized telephony carriers, enterprises,
  end-user groups, or Federations. Data exchanges among these
  administrative domains may be bi-lateral or multi-lateral in nature, and
  could include bulk updates and/or more granular real-time updates.
  
  Administrative domains may exchange data through the use of an external
  registry to aggregate data from multiple administrative domains or
  multiple data providers into a single view.
  
  The DRINKS WG will provide details of how Session Establishment Data
  (SED) is collected, what comprises SED, how SED should be used to
  properly identify an optimal path to a destination SIP user agent
  (UA),either internally or externally to the SSP. In addition DRINKS will
  insure that the SED and the SIP session data is securely exchanged
  between the peering functions.
  
  Typical SED data might include:
  
  + Routes
  - Destination SIP/SIPS/TEL URI Egress and Ingress Routes
  - Relevant route names, identifiers, and services
  - Attributes affecting route selection
  - PSTN database information
  
  + Targets
  - Individual, ranges, or groups of user-agent identifiers
  - Target aggregation entities (e.g. service areas) and
  target-to-aggregate associations
  
  + Treatment Profiles
  - Priority
  - Location
  
  Potential SED Data types not in scope will be session rating or other
  billing or pricing information between SSP's
  
  The working group will draw upon expert advice and on-going consultation
  from the ENUM and SPEERMINT working groups, and also the XML
  Directorate.
  The working group will consider the reuse of elements of RFC 4114.
  
  The final work product(s) from this working group will utilize and be
  based on XML documents and XML document exchanges.