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IP Telephony Spatial Location Nortel Solution By: Mo Zonoun

IP Telephony Spatial Location Nortel Solution By: Mo Zonoun. IP Telephony Environment. A typical IP telephony environment consists of LANs connected together with gateways, routers, servers.

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IP Telephony Spatial Location Nortel Solution By: Mo Zonoun

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  1. IP Telephony Spatial LocationNortel SolutionBy: Mo Zonoun

  2. IP Telephony Environment • A typical IP telephony environment consists of LANs connected together with gateways, routers, servers. • Endpoint devices (telephone, workstation) are distributed all over at different locations, buildings, rooms. • Users may have wireless devices or wired to the network at any location to the LAN, and device location changes dynamically. • The topology of the network changes as gateways, routers, servers and endpoint devices are moved around. • There is no reference point between endpoint devices and their geographical locations.

  3. Example of IP Telephony Network Topology First floor –bldg a fifth floor –bldg a 802.3 Old Access Point New Access Point 2nd floor –bldg b bldg c 802.11

  4. Nortel’s Solution • Nortel’s spatial location solution establishes a reference point between the IP Telephony devices and their geographical location. • Provides accurate, secure and trusted location information. • Works with all the current telephone and computer devices regardless of their connectivity to the network • Works across all technologies, service provider and jurisdictions. • Cheap and easy to implement. • Offers variety of options for the industry to choose and to standardize • Complies with all the current E911 regulatory requirements.

  5. Nortel’s Solution Continue… Nortel’s solution provides capability for identifying the location of endpoint device within an IP or LAN environment. The system consist of: • location information transmitter • location information receiver • supporting protocols.

  6. Nortel’s Solution Continue … Location Info Transmitter • A stationary device - installed at various locations (offices, hotels and homes) similar to the smoke alarm detectors. • When activated (e.g. by 9-1-1 calls), transmits a unique pre- programmed position code (x, y, z) which can be translated to address, building, floor or room numbers. • The x,y,z code may consist of a GPS (x,y), longitude- latitude, plus elevation (floor) for three dimensional space coverage. • The position code (administered by a regulatory agency) is transmitted via MF tones, PRBS, radio, ultra-red, low power microwave, electrical power or others. • Multiple transmitters with varying codes can be installed at close proximities to provide more accurate space coverage, as required.

  7. Nortel’s Solution Continue … Location Info Receiver • Are installed on the telephones/computers. For MF tone or PRBS based system, handset receiver or computer microphone provides this function. • When enabled (e.g. by 9-1-1 call via a spatial location server), it receives the location code from the transmitter. • Embeds the location code into the telephony signal or data stream, for processing (by the spatial location server). • The information is processed by the spatial location server and then is routed to the destination (e.g. 9-1-1 PSAP via the telephone company or ISP). • The location information is then retrieved from the signals and will be processed accordingly.

  8. Information Flow for 9-1-1 Calls location Server Telco or ISP Transmitter IPTel device E911 Call Activate Transmitter Activate Receiver Broadcast location Code Embebed location Code E911 call De-activate Transmitter With location & call back number E911 call establishment

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