AddPac AP-IP230, Инструкция по установке и эксплуатации

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AP-IP230 IP Phone Installation Guide Version 1.0
AddPac Technology Proprietary & Documentation
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multiple endpoints. Megaco and H.248 refer to an enhanced version of MGCP
NAT
NAT (Network Address Translation) is the translation of an Internet Protocol
address (IP address) used within one network to a different IP address known
within another network. One network is designated the inside network and the
other is the outside.
NTP
Network Time Protocol (NTP) is a protocol that is used to synchronize
computer clock times in a network of computers. In common with similar
protocols, NTP uses Coordinated Universal Time (UTC) to synchronize
computer clock times to a millisecond, and sometimes to a fraction of a
millisecond.
PABX
Private Automatic Branch Exchange. A telephone switch for use inside a
corporation. It connects offices (internal extensions) with each other and
provides access (typically by dialing an access number such as 9) to the
public telephone network PABX is the preferred term in Europe, PBX is used
in the USA.
Packet
Packets contain a source and destination address as well as the actual
message. Packets also known as Datagrams.
PBX
A PBX (private branch exchange) is a telephone system within an enterprise
that switches calls between enterprise users on local lines while allowing all
users to share a certain number of external phone lines.
PING
Packet Internet Groper, a packet (small message) sent to test the validity /
availability of an IP address on a network
Point to Point Connection
Basic connection type. In ATM, point to point connection is half duplex
connection between two ATM end systems or full duplex connection.
Pont to Multipoint
Connection
Basic connection type. In ATM, point to multipoint connection is half duplex
connection among one sending end system (root node) and multiple receiving
end system. Compare with: point-to-point connection.
POTS
Plain Old Telephone Service. Compare with: PSTN.
PPP
The most popular method for transporting IP packets over a serial link
between the user and the ISP. Developed in 1994 by the IETF and
superseding the SLIP protocol, PPP establishes the session between the
user's computer and the ISP using its own Link Control Protocol (LCP). PPP
supports PAP, CHAP and other authentication protocols as well as
compression and encryption.
Protocol Stack
Any set of communication protocols, such as TCP/IP, that consists of two or
more layers of software and hardware. It's called a stack because each layer
builds on the functionality in the layer below
PSTN
Public Switched Telephone Network
– term for the entire, world-wide
telephone network. Sometimes refers to as POTS.
PVC
Permanent Virtual Circuit or permanent virtual connection. A continuously