1 / 8

IP Telephony E911 Requirements mzonoun@nortelnetwork

IP Telephony E911 Requirements mzonoun@nortelnetwork.com. Scope.

jody
Download Presentation

IP Telephony E911 Requirements mzonoun@nortelnetwork

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. IP Telephony E911Requirementsmzonoun@nortelnetwork.com

  2. Scope For the IP Telephony several regulatory issues need to be addressed. The key regulatory requirement which may impede on the implementation and market acceptance of IP Telephony is the Emergency Call Location (E911) for police, medical and fire assistance. National Emergency Number Association (NENA) defines requirements for E911 and makes recommendation for FCC requirements. This presentation addresses only the E911 issues.

  3. E911 Features The local central office routes the 9-1-1 calls (Selective Routing) with Automatic Number Identification (ANI) and Automatic Location Identification (ALI) to the public safety answering point (PSAP). Some of the E911 features are: - ANI, ALI, Selective Routing - Congestion Control - Call Back Number - Call Hold - Ringback - Call Priority - Call Trace/ Locate - Busy verification and interrupt - Auditing Trails

  4. E911 Call and Information Flow E911 Selective PSAP CO ANI 8 digit ANI 7 digit router Service Order SRDB SR Updates ALI ALI E911 ALI Update Service Order Subscriber Information E911 TSS Voice Path Signal Path

  5. NENA’s Model State Legislation NENA is writing requirements for Model State Legislation: • Based on the current seven state legislations for a minimum requirement. • Applies to residential, commercial and hotel/motels. • Requires Emergency Response Location (ERL) with building address and floor of the caller. • Residential and Workspace less than 7000 sq. ft. located on a single contiguous property (one ERL), Key System provide only one ERL, MLTS (PBX) with less than 49 stations and more than 40,000 sq. ft-contiguous property-one ERL. • The Model State Legislation for hotel/motel will require that the operator ensure connection to 911 so that PSAP clearly identify address and unit of caller with ANI/ELIN and ALI for each telephone set, or provide automatic means to connect caller and PSAP with an individual that is knowledgeable of the facility- ALI can be substituted with individual communication specific location. This Model Legislation has been put on the NENA web site for comment ( <http://nena.org>).

  6. FCC Wireless Requirements • Handset-Based Solutions (Wireless Carrier) Must support: • Accuracy of 50 meters for 67 percent of calls • Accuracy of 150 meters for 95 percent of calls • Phase in new, modified, or upgraded handsets beginning March 1, 2001 • Ensure that at least 50 percent of all new handsets activated are ALI-capable by October 1, 2001 • Ensure that at least 95 percent of all new handsets are ALI-capable by October 1, 2002. And 100 percent penetration by Dec 31, 2004 • For Network-Based Solutions: • 100 meters for 67 percent of calls • 300 meters for 95 percent pf calls • 50 percent of callers within six month pf a PSAP request

  7. IP Telephony Location ID Problems • IP Telephones are not tied or physically connected to their geographical location and their locations are dynamic. • Transmission medium is varied. It may be wired, wireless, LAN, WLAN, Cable TV, DSL or Satellite. • There are a large number of IP domains and service providers policies (i.e. telco, cable co., cellular, pcs or isp), information retrieval is not scalable. • 9-1-1 calls require guaranteed end-to-end QoS. • Security is an issue. The location information should be made available only to the authorized agencies.

  8. IP Telephony E911 Protocol Stack PSAP Application layer TCP UDP Transport layer IP Mobile IP Network layer PPP Mobile PPP Access layer 802.3 PSTN 802.11

More Related