AddPac AP-VP280, Инструкция по установке и эксплуатации

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AP-VP280 BcN Video Phone, Release 1.10
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AddPac Technology Proprietary & Documentation
Packet
A packet is a group of logical data that contains user data and a header where control
data is contained. A packet mainly refers to the unit of network layer data.
PBX
Stands for Private Branch eXchange. PBX, which is located in a subscriber building, is a
digital or analog phone switchboard used to connect private networks to public phone
networks.
PING
Stands for Packet INternet Groper. ICMP echo-processes a response between messages.
PING is used for an IP network to test the accessibility of network devices.
Point to Point Connection
One of the two basic connection types. In ATM, the point to point connection may be
either a one-way connection or a two-way connection between two ATM end systems.
Pont to Multipoint
Connection
One of the two basic connection types. In ATM, the point to multipoint connection is a
one-way connection method that enables a transmitting end-system (root node) to be
connected to multiple receiving end-systems (riff). Compare to: Point to Point
Connection
POTS Stands for Plain Old Telephone Service. Reference: PSTN.
PPP
Stands for Point-to-Point Protocol. This protocol is the advanced version of SLIP that
enables a router-to-router connection or a host-to-network connection through
synchronous or asynchronous lines. SLIP is designed to be used on an IP, while PPP is
used along with network layer protocols such as IP, IPX, and ARA. PPP has a bulletin
board security mechanism such as CHAP and PAP. PPP has two sub-protocols, LCP and
NCP. Reference: CHAP, LCP, NCP, PAP, and SLIP
Protocol Stack
This is a collection of communication protocols that inter-work with one another and that
process communications in part or all of the seven layers of the OSI reference model. All
protocol stacks are not related to each layer of the OSI model, and one protocol of a
stack can process multiple layers at one time. TCP/IP is a typical protocol stack.
PSTN
Stands for Public Switched Telephone Network. PSTN is a general term that refers to
various telephone networks and services used worldwide. PSTN is also called POTS.
PVC
Stands for either Permanent Virtual Circuit or Permanent Virtual Connection. PVC is a
virtual circuit installed permanently. PVC allows you to reduce a bandwidth for setting
up or releasing a circuit when a specific virtual circuit must always exist. As an ATM
term, PVC is called Permanent Virtual Connection.
Q.931 Signaling
This is an ITU standard that specifies ISDN signal processing methods. The H.225.0
standard uses a variation of Q.931 to set up or disconnect the session of H.323.
QoS
Stands for Quality of Service. QoS is the criterion of measuring the performance (e.g.
transmission quality and service availability) of a transmission system.
RAM Stands for Random-Access Memory. RAM is a volatile memory that can be read or