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| Is installed between the phone lines and the PSAP telephone system. This equipment recieves the ANI signal from the central office. The equipment determines which position answered the call and sends the ALI to that position's ANI display. |
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| Feature Group D is a local exchange carrier network service that, among other things, lets public-safety dispatch offices receive a 10-digit data stream, including the full call-back number, alongside wireless 911 calls |
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| Integrated Services Digital Network Signalling System Number 7 (SS#7) is the protocol used by the telephone companies for interoffice signalling. primary function of SS#7 is to provide call control, remote network management, and maintenance capabilities for the inter- office telephone network |
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| voice phone calls over the Internet |
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| data transmission between computers in a computer network. Data is sent in HDLC packets, referred to as frames |
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| Asynchronous Transfer Mode, a network technology based on transferring data in cells or packets of a fixed size. The cell used with ATM is relatively small compared to units with older technology. |
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| The Strowger switch, also known as Step-by-Step or SXS, is an early electromechanical telephone switching system |
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| In a network, a cross-bar switch is a device that is capable of channeling data between any two devices that are attached to it up to its maximum number of ports. The paths set up between devices can be fixed for some duration or changed when desired and each device-to-device path (going through the switch) is usually fixed for some period. |
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| electronic key systems use dedicated handsets which displayed and allowed access to all connected PSTN lines and stations |
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| Hard wired - uses actual hard wires to control individual line selection buttons for each connected phone line. Becoming obsolete. |
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| tele line controlled by computer or CTI Computer Telephony Integrated; info displayed on monitor - wide array of features. |
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| combines key system and PBX features; not all lines appear on all phone sets;Supports both analog and digital signalling, and of some PBX functionality gives rise to the "Hybrid" designation |
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Definition
| Call is presented with ANI only - no ALI. Ph number of caller is displayed on screen - |
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| Next Generation 9-1-1; greater data handling; enable the public to transmit text, images, video and data to the 9-1-1 center |
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Definition
| The capability of routing 9-1-1 calls to a designated alternate location(s) if all 9-1-1 trunks to a primary PSAP are busy or out of service. |
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Definition
| In the event of an ANI failure, calls are routed to a designated default PSAP. Calls are routed based on the incoming trunk group. This is done at the tandem; Whatever the contingency plan is for the region |
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| 1 side of the phone call is handed off to another party. |
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Term
| Router to router transfer |
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Definition
| 2 diff 9-1-1 system selective routers have transfer codes of each other. If one of them get a phone call not native to their selective router, it has codes for nearby selective routers. Will send to selective router, then to PSAP |
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| Geospatial routing employs GIS data to better locate and route emergency calls. |
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| An entity which determines policy on routing, overflow |
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| the capability to route a 9-1-1 call to a designated (default) answering point (called a default PSAP) when the incoming 9-1-1 call cannot be selectively routed due to an ANI failure, garbled digits, or other cause. |
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| Basic 9-1-1 - transport mechanism - 9-1-1 callautomatically connects call from CO to PSAP. Just connects call to PSAP most likely no ANI / ALI |
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Definition
| Uses network switch and database functionality. Capability of selective routing - which 91--1 center call goes to - selective transfer capability |
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Definition
The routing of a 9-1-1 call to the proper PSAP based upon the location of the
caller. Selective routing is controlled by the ESN which is derived from the
customer location. |
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Term
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Definition
| ANI is re-transmitted / or re-bid. If initial ANI is garbled to get proper ALI to come back in. Phone system may have a re-bid system button. On wireless call, |
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Term
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Definition
| Based on the ESN of the caller, the selective transfer button on CPE will intuitively populate behind transfer buttons. It will automatically transfer to the correct agency |
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Definition
| is the actual medium over which the tranport takes place; copper wire, sattelite, micro |
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