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| if calling and called aprty are served by same switching facility |
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| Geographical area served by local telco |
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| Switching configuration in which switch is designated to serve a specific rate center |
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| Interconnects end offices, cama trucks, provides access to IC, Operator positions, trunk concentration |
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| Remote switching unit - provides remote and host switching |
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| is technology dependent on binary signal through the turning on and off of thosands of lights |
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| A microwave signal may travel up to 30 miles before a repeater is needed |
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| Wires that run from a suscribers pbx, telephone or r... to a CO |
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| 5 features of a 9-1-1 tandem |
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Definition
| selective routing, ANI, ALI, caller ID, 3 way calling |
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| Reverse battery signalling |
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Definition
| provides an offhook when a 9-1-1 call is answered due to a reversal of the tip and ring |
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Definition
| Dual tone multi-frequency - pulse dialing |
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| This feature differentiates basic from e9-1-1 |
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| 3 components specific to 9-1-1 |
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Definition
| MSAG, selective router, selective router data base |
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Definition
| Emergency Service Zone - geographic zone served by specific fire, ems, law |
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| Integrated PSAP equipment |
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Definition
| receives both ANI and ALI from 9-1-1 tandem |
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Term
| PS Ali / PBX operator is required to.. |
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Definition
| Assign location info for DID extensions - (direct inward dial) |
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Term
| 3 benefits of AIN (advanced intelligent networks) |
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Definition
| 1. no 9-1-1 tandem; 2. no more analog trunks; 3. no more data links the the 9-1-1 ali data base |
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| Functions of a SCP - Signal control point |
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Definition
| controls the function of a central office |
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| Public safety utilizes______ frequencies within the 39-72 mHz for inner city communications |
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| Electro-mechanical switch |
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Definition
| step by step SXS - developed in the 20's - being phased out |
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| penetrates structures better, but not for distances greater than 25 miles |
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| ESRK Ani recored in this phase II solution is dynamic |
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| Pseudo ANI or telephone # used for routing |
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Definition
| convergence of voice, video and data |
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| Information is comprised of 3 - - - |
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Definition
| knowledege, facts and data |
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Term
| CRIS - Customer record information systems |
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Definition
| Individual customer records are extracted by the telco to form this ali data base |
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Definition
| information organized in a formalized manner |
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| Emergency service number 3-5 digit number facilitating the selective routing of calls to the appropriate PSAP |
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Definition
| is a point or means of interaction between 2 systems |
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Term
| SRS are comprised of___ AND ___? |
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Definition
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| 4 locations where a 9-1-1 database may be located |
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Definition
| 1. telco; 2. self-maintained at the psap; 3, stand alone at the psap via telco; 4. individual provided or maintained |
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Definition
| This # is used in wireless call setup to route the call to the correct PSAP often referred to as the routing number |
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| What are the 5 components of the final phase of E9-1-1 database delivery |
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Definition
| 1. PSAP training; 2, testing of the network; 3. equipment; 4. database; 5. cutover |
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Term
| Is locality considered a display definition for an ESZ? |
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Definition
| Locality name is optional |
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Term
| MSC (mobile switching center) |
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Definition
| is a wireless carrier's switch providing services and coordination between mobile users in a wireless network and the PTSN |
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| Primary purpose of an MSAG |
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Definition
| Address info, tn, subscriber info, must be msag valid |
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| Info contained in an MSAG |
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Definition
| pre-post directional, community, esn, county id; zip code, state, exchang, hi - low blocks |
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| is a service offering which supplies the same dial tone to two different addresses within the same serving wire center |
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Definition
| when a customer transfers service to a new address, the service remains at the old address for a specified period of time |
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Definition
| actual phone # of the wireless device used to dial 9-1-1 |
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Definition
| is a 2 wire common controlled switching system with a space devision network that can be used for local tandem, toll tandem and cama switching |
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Definition
| is a feature whereby a call is routed to an alternate location if no circuit condition is encountered on the first choice |
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| What is the significant difference between mobile and portable radio? |
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Definition
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Definition
| is the actual medium on which transmission takes place; i.e. copper, fiber, microwave, sattelite, co-ax |
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| trunks directly from the co to the psap |
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Definition
| local exchange carrier / incumbent local exchange carrier |
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Definition
| regional bell operating company - scc, pac bell, bell south, bell atlantic |
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Term
| What is the PBX challenge to 9-1-1 |
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Definition
| can't identify specific location of the caller |
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Term
| which inter-connect medium is used to interconnect the wireless network to the tandem? |
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Definition
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Term
| CAS-call associated signalling |
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Definition
| delivers the PANI with the voice call to the PSAP over the SS7, feature group D, ISDN or MS |
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Term
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Definition
| tHIS TRANSPORT WILL ALLOW OR MAY ALLOW THE POSSIBLE TRANSFER OF A 9-1-1 CALL WITH ANI AND ALI TO ANY PSAP IN NORTH AMERICA |
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Definition
| Longitude - distance from prime meridian - greenwhich |
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Definition
| latitude - distance from the equator |
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| Which frequencies are UHF |
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Definition
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Definition
| within a radio system allow portable or mobile users to hear others greater than 25 miles |
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| 5 types of PSAP equipment |
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Definition
| cad, rms, recording, ups, mds |
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Definition
| call accounting, allows for even distribution of calls |
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| Navigation and positioning tool |
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Definition
| 24 satellites comprise the GPS constellation |
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| 3 location determining technologies (LDT) |
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Definition
| handset, network, handset assisted |
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Definition
| is used in wireless call setup to route the call to the correct PSAP |
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Definition
| center of the cell sector |
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Term
| which number will unitialized phones display as the area code followed by the devices serical #? |
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Definition
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Term
| Difference between an area code overlay vs an area code split |
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Definition
| overlay adds another area code; split defines the geographical boundaries |
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Term
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Definition
| Capability to route 9-1-1 calls to a designated or default PSAP when the incoming 9-1-1 call can't be selectively routed due to an ANI or key failure or other cause |
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Definition
analog - primarily voice, very reliable form of switching - circuit switched.
Digital - binary encoded info, cleaner, more powerful, cheaper, technology is rapidly changing |
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Definition
| A standard metric for voice networks is the Line to Trunk Concentration Ratio (LCR), also referred to as an over-subscription ratio. |
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