1 / 5

Marking of Calls initiated by Public Safety Answering Points (PSAPs)

Requirements for. Marking of Calls initiated by Public Safety Answering Points (PSAPs). Henning Schulzrinne Stephen McCann Gabor Bajko Hannes Tschofenig. Problem space. PSAP wants to reach original emergency caller immediately (e.g., after disconnect)

jleah
Download Presentation

Marking of Calls initiated by Public Safety Answering Points (PSAPs)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Requirements for Marking of Calls initiated by Public Safety Answering Points (PSAPs) Henning Schulzrinne Stephen McCann Gabor Bajko Hannes Tschofenig IETF - ECRIT

  2. Problem space • PSAP wants to reach original emergency caller • immediately (e.g., after disconnect) • within some reasonable interval (minutes? days?) • Original caller: • same device (GRUU) • some device for same caller (Contact, From) • Want to bypass call treatments that may prevent call • call forwarding • call rejection (SPIT filtering, time-of-day rules, …) • other calls? • Non-goal: preferential treatment in the “network” IETF - ECRIT

  3. Complications • Caller address may be unknown to original caller • call forwarding to first responders • ESNet multiple resolution steps • PSTN forwarding • Prevent abuse by non-emergency callers • will be abused by telemarketers IETF - ECRIT

  4. Solution approaches • “This is a PSAP” • “This is an emergency-related call” • might apply to notification problem • “This is a return call for your call” • generalizes to non-emergency calls IETF - ECRIT

  5. TBD • Sufficient starting point? • Limit duration of call back time window? • provide reasonable expectations • allow soft state for call-related state • does not matter with identity-based schemes IETF - ECRIT

More Related