P-MAC
packet media access controller
PAD
packet assembler-disassembler
PCB
printed circuit board
PDS
premises distribution system
Personal Communications
Personal communications provides at least one human operator with direct terminal access and real time or near real time interactive communications with a remote human opera tor or an information system resource. Personal communications can refer to a broad range of services, systems and equipment, e.g., facsimile machines, landline telephones, cellular tele phone systems and emerging personal communication system (PCS) adjuncts, and a variety of radio systems including pagers, hand-held remote data entry terminals, and autonomous citizen-band- like radio systems.
PHY
physical-layer protocol
PMD
physical-layer media-dependent
Point-of-presence (POP)
A POP is a physical location within a LATA that an IXC establishes for the purpose of gaining access to BOC/LEC networks within the LATA using LEC provided access services. An IXC may have more than one POP within a LATA and the POP may support public and private, switched and non switched services.
POP
point-of-presence
POT
point of termination
PPSN
public packet switched network
Premises Distribution System (PDS)
PDS is the transmission network inside a building or among a group of buildings, for example an office park or a campus. PDS is used in this book as a generic term although AT&T used it to describe a specific product offering. The PDS connects desktop and other station equipment with common host equipment, (e.g., switches, computers and building automation systems), and to external telecommunications networks.
Private Branch Exchange (PBX)
A PBX is a premises switching system, serving a commercial or government organization, and usually located on that organization's premises. PBXs provide telecommunications services on the premises or campus, (e.g., internal calling and other services), and access to public and private telecommunications network services.
Private Network
A private network is a network made up of circuits and, sometimes, switching equipment, for the exclusive use of one organization.
PRI
primary rate interface
Protocols
Protocols are strict procedures for the initiation, maintenance and termination of data communications. Protocols define the syntax (arrangements, formats and patterns of bits and bytes) and the semantics (system control, information context or meaning of patterns of bits or bytes) of exchanged data, as well as numerous other characteristics (data rates, timing, etc.).
PSN
packet switched network
PSPDN
packet switched public data network
PSTN
public switched telecommunications network
PTT
postal, telephone, and telegraph
Public Switched Telephone Network (PSTN)
A Public Switched Telephone Network (PSTN) denotes those portions of the LEC and IXC networks that provide public switched telephone network services.
PUC
public utility commission
Pulse Code Modulation (PCM)
Pulse Code Modulation (PCM) is a modulation scheme involving conversion of a signal from analog to digital form by means of coding. See also modulation.
PVC
permanent virtual circuit
Partner＊s Program - An indirect sales channel that offers smaller businesses in the TDS Telecom service areas an opportunity to promote and sell TDS Telecom products and services.
Password - A code or word used to gain access to restricted data on a computer network. While passwords provide security against unauthorized users, the security system can only confirm that the password is legitimate, not whether the user is authorized to use the password. That's why it is important to safeguard passwords by:
* Never disclosing your password to anyone.
* Creating a password that consists of letters, numbers, and symbols.
* Changing your password frequently.
PCS (Personal Communications Services) - Originally meant to describe digital service offered at a higher frequency (1900 MHz) than wireless, it is now used as a generic term for all digital (versus analog) wireless.
PDF - An acronym for Portable Document Format, PDF is a file type created by Adobe Systems, Inc. that allows fully formatted, high-resolution documents to be easily transmitted across the Internet and viewed on any computer that has Adobe Acrobat Reader software.
Peering - The arrangement of information sharing between Internet Service Providers at various NAPs.
PIC Freeze - Pre-subscribed Interexchange Carrier Freeze. An agreement between a customer and their local telephone company to prevent ※slamming§ on their long distance telephone bill.
Pipeline - An extremely high-speed, large capacity bandwidth connection.
Point of Presence (POP) - A location where a you can connect to a network through local telephone lines.
Point-to-Point Protocol - A program that allows a computer to use a telephone line and modem to make TCP/IP connections.
PON (Passive Optical Network) - a fiber-based network built without active electronics. Because a PON network uses optical splitters rather than costly active electronics, it is less expensive to build and maintain than a network that uses active electronics. PONs are still more expensive than copper-based networks. A PON network is usually used in a local loop to connect customers to the central office. BPON (Broadband Passive Optical Network) is a broadband PON.
POP - See Point of Presence and Post Office Protocol
Post Office Protocol (POP) - A system that allows hosts to get e-mail from a server.
POPs (Population equivalents) - The population of a market multiplied by the percentage ownership of that market.
PPP - See Point to Point Protocol
packet media access controller
PAD
packet assembler-disassembler
PCB
printed circuit board
PDS
premises distribution system
Personal Communications
Personal communications provides at least one human operator with direct terminal access and real time or near real time interactive communications with a remote human opera tor or an information system resource. Personal communications can refer to a broad range of services, systems and equipment, e.g., facsimile machines, landline telephones, cellular tele phone systems and emerging personal communication system (PCS) adjuncts, and a variety of radio systems including pagers, hand-held remote data entry terminals, and autonomous citizen-band- like radio systems.
PHY
physical-layer protocol
PMD
physical-layer media-dependent
Point-of-presence (POP)
A POP is a physical location within a LATA that an IXC establishes for the purpose of gaining access to BOC/LEC networks within the LATA using LEC provided access services. An IXC may have more than one POP within a LATA and the POP may support public and private, switched and non switched services.
POP
point-of-presence
POT
point of termination
PPSN
public packet switched network
Premises Distribution System (PDS)
PDS is the transmission network inside a building or among a group of buildings, for example an office park or a campus. PDS is used in this book as a generic term although AT&T used it to describe a specific product offering. The PDS connects desktop and other station equipment with common host equipment, (e.g., switches, computers and building automation systems), and to external telecommunications networks.
Private Branch Exchange (PBX)
A PBX is a premises switching system, serving a commercial or government organization, and usually located on that organization's premises. PBXs provide telecommunications services on the premises or campus, (e.g., internal calling and other services), and access to public and private telecommunications network services.
Private Network
A private network is a network made up of circuits and, sometimes, switching equipment, for the exclusive use of one organization.
PRI
primary rate interface
Protocols
Protocols are strict procedures for the initiation, maintenance and termination of data communications. Protocols define the syntax (arrangements, formats and patterns of bits and bytes) and the semantics (system control, information context or meaning of patterns of bits or bytes) of exchanged data, as well as numerous other characteristics (data rates, timing, etc.).
PSN
packet switched network
PSPDN
packet switched public data network
PSTN
public switched telecommunications network
PTT
postal, telephone, and telegraph
Public Switched Telephone Network (PSTN)
A Public Switched Telephone Network (PSTN) denotes those portions of the LEC and IXC networks that provide public switched telephone network services.
PUC
public utility commission
Pulse Code Modulation (PCM)
Pulse Code Modulation (PCM) is a modulation scheme involving conversion of a signal from analog to digital form by means of coding. See also modulation.
PVC
permanent virtual circuit
Partner＊s Program - An indirect sales channel that offers smaller businesses in the TDS Telecom service areas an opportunity to promote and sell TDS Telecom products and services.
Password - A code or word used to gain access to restricted data on a computer network. While passwords provide security against unauthorized users, the security system can only confirm that the password is legitimate, not whether the user is authorized to use the password. That's why it is important to safeguard passwords by:
* Never disclosing your password to anyone.
* Creating a password that consists of letters, numbers, and symbols.
* Changing your password frequently.
PCS (Personal Communications Services) - Originally meant to describe digital service offered at a higher frequency (1900 MHz) than wireless, it is now used as a generic term for all digital (versus analog) wireless.
PDF - An acronym for Portable Document Format, PDF is a file type created by Adobe Systems, Inc. that allows fully formatted, high-resolution documents to be easily transmitted across the Internet and viewed on any computer that has Adobe Acrobat Reader software.
Peering - The arrangement of information sharing between Internet Service Providers at various NAPs.
PIC Freeze - Pre-subscribed Interexchange Carrier Freeze. An agreement between a customer and their local telephone company to prevent ※slamming§ on their long distance telephone bill.
Pipeline - An extremely high-speed, large capacity bandwidth connection.
Point of Presence (POP) - A location where a you can connect to a network through local telephone lines.
Point-to-Point Protocol - A program that allows a computer to use a telephone line and modem to make TCP/IP connections.
PON (Passive Optical Network) - a fiber-based network built without active electronics. Because a PON network uses optical splitters rather than costly active electronics, it is less expensive to build and maintain than a network that uses active electronics. PONs are still more expensive than copper-based networks. A PON network is usually used in a local loop to connect customers to the central office. BPON (Broadband Passive Optical Network) is a broadband PON.
POP - See Point of Presence and Post Office Protocol
Post Office Protocol (POP) - A system that allows hosts to get e-mail from a server.
POPs (Population equivalents) - The population of a market multiplied by the percentage ownership of that market.
PPP - See Point to Point Protocol