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Method of Supporting Enhanced 911 for VoIP Service Providers

IP.com Disclosure Number: IPCOM000127279D
Publication Date: 2005-Aug-19
Document File: 2 page(s) / 42K

Publishing Venue

The IP.com Prior Art Database

Abstract

This invention proposes an enhanced 911 solution for Nomadic and Foreign VoIP service provider. It is catered towards non-PC based solutions whereby a consumer electronic (CE product) is used to interconnect to the Internet and a typical POTs telephone is also connected to it. The end-user's interface is a typical POTs telephone. Typically a VoIP service provider provides a CE product in the form of an adaptor box for their subscribers. On one side of the adaptor box, an Ethernet connection is provide towards a broadband modem. (could be cable modem or DSL modem). On the other side of this box, a RJ11 line interface allows a regular POTs telephone to be connected . This "adaptor box" takes the analog signal from the POTs line and digitizes and "packetize" it for the Internet. Both call setup signalling and speech will be handled by this box. For this invention, it is proposed to add a cellular module to this adaptor box. This cellular module will or can support a multitude of cellular air interface standard (TDMA,GSM,CDMA2000). When activated it will scan the cellular frequencies and determine which carrier it can support. Note that no cellular subscription is required with any of the cellular carriers. Regulation requires that cellular carriers must complete all emergency calls to a PSAP even if the mobile station does not have a valid subscription attached to it. The adaptor box will analyze all B-numbers it receives from the attached POTs telephone. Upon determining that the number is for an emergency call (ie.911), it will bypass it VoIP functionality and instead complete the call using its cellular module. It is assumed that the cellular operator already have the infrastructure to comply to regulation regarding emergency 911 calls. Cellular operators actually will have to support enhanced 911 service along with location information. Upon the powering up of the adaptor box", if no cellular carrier is determined to be suitable, the adaptor would provide an indication that emergency 911 service is not available. It may furthermore disable its VoIP services so that it would comply to regulator's requirements.

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Disclosure Form

1                                       Title

Method of Supporting Enhanced 911 for VoIP Service Providers.

                           

2                                      Authors

Donald Joong

Hung Tran

                            Shohreh Savoli

                           

3                                      Background

Internet–based telephony or VoIP based services is becoming a reality. These new services typically utilizes broadband access network to offer telephony services to end-users over an IP based network. These new companies that offers these new services are in direct competition with the incumbent and traditional circuit switch voice carriers.

Telecommunication regulators (FCC, CRTC, EU) have recently decided to regulate VoIP service providers and to mandate that they meet the same level of public-safety requirements as the incumbent circuit switched voice carrier.

In particular, in a recent CRTC and FCC decision, VoIP service provider has been mandated to provide emergency 911 services to their subscribers within 90 days (as of May 17, 2005).

4                                      State-of-the-art

There are 2 types of 911 services:

Enhanced 911 services require emergency calls to be routed to the geographic appropriate PSAP. A call back number or an A-number must also be provided to the PSAP. Additionally for wireless operators, location information regarding the origin of the call must also be provided.

Basic 911 services does not display the calling ID and the call could go to a non-emergency number for manual routing.  (i911)

There are 3 types of VoIP Service:

Fixed VoIP is a service that is permanently attached to an address and cannot be moved.

Nomadic VoIP is  a service that can be used anywhere there’s a broadband connection to the internet.

Foreign VoIP service is that which the user’s phone number is for an area code other thn where the VoIP phone actually is installed.

5                                      Problem

VoIP service provider must comply with regulator’s 911 service requirements.

6                                      Detailed Description

This invention proposes an enhanced 911 solution for Nomadic and Foreign VoIP service provider.  It is catered towards non-PC based solutions whereby a consumer electronic (CE product) is used to interconnect to the Internet and a typical POTs telephone is also connected to it. The end-user’s interface is a typical POTs telephone.

Typically a VoIP service provider provides a CE product in the form of an adaptor box for their subscribers.

On one side of the adaptor box, an Ethernet connection is provide towards a broadband modem. (could be cable modem or DSL modem). On the other side of this box, a RJ11 line interface allows a regular  POTs telephone to be connected . This “adaptor box” takes the analog signal from the POTs line and digitizes and “packetize” it for the Internet. Both call setup signalling and speech will be handled by this box.

For this invention, it is proposed to add a cellular modu...