Abbreviations and Technical Terms
E.164
Standardized call numbers according to the ITU’s international numbering plan with up to 15 digits. Usually composed of the parts: Country Code (CC), National Destination Code (NDC) and Subscriber Number (SN).
EPID
Abbreviation of End Point IDentifier. Hardware address of an incoming message.
FTP
Abbreviation of "File Transfer Protocol."
Used for transferring files in networks to update telephone software, for example (Æ Download Firmware).
G.711
Audio protocol for uncompressed voice transmission. Requires a band- width of 64 Kbps.
G.722
Audio protocol for uncompressed voice transmission. Requires a band- width of 64 Kbps.
G.723
Audio protocol for compressed voice transmission. The quality is poorer than Æ G.711 and Æ G.729. Requires a bandwidth of 6 Kbps.
G.729
Audio protocol for compressed voice transmission. The quality is poorer than Æ G.711 and better than Æ G.723. Requires a bandwidth of 8 Kbps.
Gatekeeper
A gatekeeper is a logical Æ H.323 Standard component which can be im- plemented as Windows or UNIX software, as a router option, as part of an
ÆMCU or a Æ Gateway.
Gateway
A system (computer or board) that transfers data between different net- works. Gateways coordinate different protocols as appropriate,
for example, Æ IP network and ISDN network. A gateway can contain a
ÆRouter at the same time.
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