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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"frame" the data. (Some control frames contain no data.)
Frame-Relay
Switching type Data Link Layer Protocol. Using HDLC capsule, process multi
number of virtual circuits between devices.
FTP
an acronym for File Transfer Protocol, a very common method of transferring
one or more files from one computer to another. Defined at RFC 959.
FXO
Foreign Exchange Office. An FXO interface connects to the Public Switched
Telephone Network (PSTN) central office and is the interface offered on a
standard telephone.
FXS
Foreign Exchange Station. An FXS interface connects directly to a standard
telephone and supplies ring, voltage, and dial tone.
G.711
Describes the 64-kbps PCM voice coding technique. In G.711, encoded voice
is already in the correct format for digital voice delivery in the PSTN or through
PBXs.
G.723.1
Describes a compression technique that can be used for compressing speech
or audio signal components at a very low bit rate as part of the H.324 family of
standards. This CODEC has two bit rates associated with it: 5.3 and 6.3 kbps.
The higher bit rate is based on ML-MLQ technology and provides a somewhat
higher quality of sound. The lower bit rate is based on CELP and provides
system designers with additional flexibility.
G.726
Describes ADPCM coding at 40, 32, 24 and 16 kbps. ADPCM encoded voice
can be interchanged between packet voice, PSTN, and PBX networks if the
PBX networks are configured to support ADPCM. Described in the ITU-T
standard in its G-series recommendations.
G.728
Describes a 16 kbps low-delay variation of CELP voice compression. CELP
voice coding must be translated into a public telephony format for delivery to
or through the PSTN. Described in the ITU-T standard in its G-series
recommendations.
Gatekeeper
The component of an H.323 conferencing system that performs call address
resolution, admission control, and subnet bandwidth management. H.323
entity on a LAN that provides address translation and control access to the
LAN for H.323 terminals and gateways. The gatekeeper can provide other
services to the H.323 terminals and gateways, such as bandwidth
management and locating gateways. A gatekeeper maintains a registry of
devices in the multimedia network. The devices register with the gatekeeper at
startup and request admission to a call from the gatekeeper.
H.225
An International Telecommunication Union (ITU-T) standard for H.225.0
session control and packetization. It defines various protocols of RAS,
Q.931, RTP and etc.
H.245
An International Telecommunication Union (ITU-T) standard for H.245
endpoint control.