AP-VP150 Video Phone Installation and Operation Manual, Edition 1.00
AddPac Technology Proprietary & Documentation
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private use.
Encryption
Encryption means that a specific algorithm is applied to data in order to convert data
to a form that unauthorized users cannot identify.
Ethernet
Baseband LAN standard initiated by Xerox Corporation and co-developed by Xerox,
Intel, and DEC. CSMA/CD is used for Ethernet networks, which operate through a
variety of cables at a rate of 10Mbps. Ethernet is similar to the IEEE 802.3 standard.
Reference: 10Base-2, 10Base5, 10Base-F, 10Base-T, 10Broad-36, Fast Ethernet,
and IEEE 802.3.
FAX
Abbreviation of Facsimile. FAX refers to the transmission of scanned texts or images
to a printer or an output device connected to another phone number by using a
telephone line. Once the original document is read by a facsimile, the facsimile treats
the document as a fixed graphic image, and converts it to bitmap. In this digital form,
data is transferred in the form of an electrical signal through a phone system. The
receiving facsimile restores the data to a encoded image, and prints it on a sheet of
paper.
Frame
Logical group of data transferred to a data link layer unit through a transmission
medium. From frames, the header and trailer that include user data are important.
Headers and trailers are used for synchronization and error control. Cells, datagrams,
messages, packets, and segments are used to describe logical data groups in
various layers of OSI or based on various technologies.
Frame-Relay
This is an industry-standard switching-type data link layer protocol that processes
multiple virtual lines in inter-connected devices by using the HDLC encapsulation.
Frame-Relay is more efficient than X.25.
FTP
Stands for File Transfer Protocol. FTP, which is an application protocol, is part of the
TCP/IP protocol stack used for file transfer between network nodes. FTP is defined in
RFC 959.
FXO
Stands for Foreign Exchange Office. The FXO interface is connected to the switching
center of Public Switched Telephone Network (PSTN), and is provided by a regular
phone. The FXO interface of Cisco is a station interface of the switching center or
PBX on PSTN, and is a RJ-11 connector for analog connection devices.
FXS
Stands for Foreign Exchange Station. The FXS interface is directly connected to a
standard phone, and provides a ring-back tone, voltage, and a dial tone. The FXS
interface of Cisco is a RJ-11 connector for basic telephone service devices, keyset,
and PBX.
