DIGTIONARY
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`IP Telephony - LANs & Intranets - Call Centers & Computer Telephony
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`Fiber Optics, sown and DWDM - Satellites
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`Voice, Data, Image & Video Networking - Wired
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`nd Wireless Telecom - VolP 0 T-1, T-3, T—4, E-1,
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`-3 0 ISDN & ADSL 0 Cable Modems 0 Cellular,
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`[:8 & GSM - Windows 95, 98, NT, Netware.
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`pple, Sun & Unix Networking - Ecommerce
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`‘|5Ih
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`Ex. 1009
`YMax Corporation
`Page 1 of 2
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`NEWTON’S TELECOM DICTIDNARY
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`So things are changing, albeit very very slowly.
`switched loop In telephony, a circuit hat automatically
`releases connection from a console or switcfboard, once con-
`nection has been made, to the appropriate terminal. Loop but-
`tons or jacks are used to answer incoming listed directory num-
`ber calls, dial “0“ internal calls, transfer requests , and inter-
`cepted calls. The attendant can handle only ore call at a time.
`switched loop Operation Each call requiring attendant
`assistance is automatically switched to one 0‘ several switched
`loops on an attendant position.
`switched Multibenm A type of “smart antennae" used in
`Wireless Local Loop (WLL) systems. Swi ched multibeam
`antennae detect signal strength in a given connection, and
`select a beam between an end device and one of perhaps many
`WLL antennae, locking in on the strongest s'gnal. Also in the
`general category of “smart antennae” systems is the phased
`array approach. See also PHASED ARRAY ard WLL.
`switched llllultimegulait Data Service SMDS. A
`1.544 Mbps public data service with an IEEE 802.6 standard
`user interface.
`it can support Ethernet, Token Fling and FDDI
`(O0-3c) LAN-to-LAN connec ions. See SMDS and SMDS
`Interest Group.
`Switched Network See PSTN.
`Switched Private line Network A network which
`results from combining point- 0-point circuits with switches.
`Switched Service Network A private line network that
`uses scan and/or CCSA type common control switching.
`Switched Transport A nane for telephone traffic between
`the local exchange carriers’ Certral Offices and an interexchange
`carriers point of presence (POP). Switched transport is general-
`ly provided on a monopoly basis as part of a LEC’s network.
`Switched Virtual Circuit SVC. A call which is only
`established for the duration o a session and is then discon-
`nected. See SVC.
`Switcher Also called a production switcher. A video term. A
`device that allows transitions between different video pictures.
`May also contain special effec s generators.
`Switclthook A synonym for hookswitch or hook— switch.
`Also spelled switch hook. See SWITCH HOOK.
`Switching Connecting the calling party to the called party.
`This may involve one or many physical switches.
`Switching Arrangement A circuit component which
`enables a Customer to establish a communications path
`between two phones on a network.
`Switching Centers There are four levels in the North
`American switching hierarchy run at AT&T. They are: Class 1
`— Regional Center, Class 2 — Sectonal Center, Class 3 —
`Primary Center, Class 4c — Toll Cen er and Class 4P — Toll
`Point.
`in addition, the local Bell operating companies run a
`fifth level in the hierarchy, called the Class 5 — End Office.
`Switching Equipment Premises equipment which per-
`forms the functions of establishing ard releasing connections
`on a per call basis between two or rrore circuits, services or
`communications systems.
`Switching Equipment Capacity A telephone company
`term. The capacity of switching equipment is expressed in net-
`work access lines.
`these componerts can be grouped into
`four categories. For D&F Chart purposes, the four categories
`are: 1. Dial Tone Equipment; 2. Talking Channels; 3.
`Switching Control; and 4. Trunk Termnations.
`Switching Fee A one-time, per—line fee imposed by the LED
`to reprogram their switching system to change your default
`long-distance carrier. Some resellers and lXCs will reimburse
`new subscribers for this fee.
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`Switching Hub A multiport hub that delivers the full,
`uncontested bandwidth between any pair of ports. An intelli-
`gent switching hub also provides bridging and multiprotocol
`routing capabilities.
`Srfrilching Point Same as end office and intermediate
`o ice.
`Switching System 1. An assembly of equipment arranged
`or establishing connections between lines, lines to trunks, or
`runks to trunks.
`2. An ATM term. A set of one or more systems that act together
`and appear as a single switch for the purposes of PNNI routing.
`switchless Resellers A switchless reseller buys long dis-
`ance service in bulk from a long distance company, such as
`AT&T, and resells that service to smaller users. It typically gets
`"ts monthly bill on magnetic tape, then rebills the bulk service
`to its customers. A switchless reseller owns no communica-
`ions facilities —- switches or transmission. it has two “assets"
`—a computer program to rebill the tape and some sales skills
`to sell its services to end users. The profit it makes comes from
`he difference between what it pays the long distance compa-
`ny and what
`it
`is able to sell
`its services at. Switchless
`resellers are also called rebillers. It's not an easy business to
`be in, since you are selling a long distance company's services
`c compete against itself. See also AGGREGATOR.
`SXS Step by Step switching system. An automatic dial-te|e-
`phone system in which calls go through the switching equip-
`"nent by a succession of switches that move a step at a time,
`from stage to stage, each step being made in response to the
`dialing of a number.
`Symbol 1. An abbreviated, predetermined representation of
`any relationship, association or convention.
`2. In digital transmission, a recognizable electrical state which
`is associated with a signal element, which is an electrical sig-
`' nal within a defined period of time.
`in a binary transmission,
`for example, a signal element is represented as one of two
`possible states or symbols, i.e., 1 or 0.
`An abbreviated, predetermined representation of any relation— N
`ship, association or convention.
`Symbolic Debugger A debugger is a wholly- or partly-
`memory—resident program that lets you closely monitor and
`control execution of an application under development. At the
`most basic level, a debugger lets you look at running machine
`code, and fiddle around with the contents of memory — great
`if youunderstand machine code (and are looking at machine
`code you’ve written from scratch). Not great if you don't know ‘
`machine code, or are looking at machine code output by a
`high-level
`language compiler (e.g., C++ compiler). A basic
`symbolic debugger references the symbol
`table of an exe-
`cutable, providing readable variable names, function entry-
`points, etc, more or less as they appear in source. Easier for
`machine—language folks (because of the labels). Not much
`easier for high-level language folks, because you're still deal-
`ing with machine code. A source—level symbolic debugger ref-
`erences both the symbol table of an executable and various
`files produced during compilation; and lets you work with
`high-level
`language source directly, during target program
`execution. Fully-integrated debuggers like this are built into
`Microsoft’s Visual/X products. Functions common to most
`debuggers include the ability to set “breakpoints” (i.e., run the
`program until you reach this step, then stop)E‘3qatc1i()r@9
`ables” (is, show me how the value of this variable changes
`—- and possibly stop ii(itas§§fiirbé[a)rirr§l‘e@1‘r1flnkfla7étlub1f1
`“single-step execution”
`i.e,, ot is step
`dsto
`ch
`variable values in mid-execution, etc.
`183892 0af§
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`Ex. 1009
`YMax Corporation
`Page 2 of 2