Dan Petrie

1
Transfer Issues draft-petrie-sipping-xfer-issues-
00.txt

• Dan Petrie
• dpetrie_at_pingtel.com
• Pingtel Corp

2
Outline

• Are these requirements to pursue?
• What do we do with the solutions?

3
Consultative Transfer Issues

• Consultative Transfer to Lost Target use GRUU to
  target
• Consultative Call Prompting Subject header in
  consultative INVITERequires header with replaces
  token
• Consultative Turned Blind Double Ring Reason
  headerOption token to disallow transition from
  consult to blind

4
Gateway Issues

• Coerce Gateway Hairpins to the Same Gateway Use
  GRUU to loose route
• Consultative Turned Blind Gateway Glare
  Disallow transition from consult to blind

5
Where do we put the solutions

• draft-ietf-sipping-cc-transfer?
• A BCP document for application of existing
  protocol constructs
• Protocol constructs needed for transfer actors on
  the same gateway?