Glossary
Dialogic® Vision™ CX Video Gateway Administration Manual
successfully established. The caller remains connected to the Vision™ Server
if the transfer fails.
D
DTMF:
Dual tone multi frequency; an inband signaling system that uses two
simultaneous voiceband tones for dialing. Also called touchtone. Some times
DMTF is used to generally describe any telephony keypad press, even if tones
are not generated.
G
G.711:
An ITU PCM encoder/decoder specification for mu-law and A-law encoding.
H
H.100 bus:
A TDM telephony bus standard for integrating hardware from various PC
board vendors. The H.100 specification defines a ribbon cable bus that
transports telephony voice data and signaling data across PCI boards. The
H.100 bus is an interoperable superset of the H-MVIP and MVIP-90 telephony
buses.
H.223:
A protocol used to multiplex control and audio and video media on and off of
a single DS0 within a trunk.
H.263:
An ITU video compression standard. H.263 supports CIF, QCIF, SQCIF, 4CIF
and 16CIF resolutions.
H.264:
An ITU and ISO video compression standard that compresses video into
lower bandwidth compared to H.263 and MPEG-4. H.264 is also called MPEG-4
Part 10.
I
INAP:
Intelligent Network Application Part; an SS7 protocol that facilitates building
platform-independent, transport-independent, and vendor-independent
applications. Such applications include service switching points (SSPs),
internet protocol (IP) applications, service control points (SCPs), enhanced
services platforms, service circuit nodes, and other custom applications.
ISDN:
Integrated services digital network; a standard for providing voice and data
telephone service with all digital transmission and message-based signaling.
ISUP:
ISDN user part; the SS7 protocol layer that allows for the establishment,
supervision, and clearing of circuit-switched connections between two SS7
signaling points, such as central office switches. Despite its name, the ISUP
layer is not unique to interconnecting. It is used to manage all types of circuit-
switched connections.
ITU:
International Telecommunications Union; an international standards body for
telecommunications.
IVR:
Interactive voice response; a telephony application in which callers interact
with programs using recorded or synthesized voice prompts, DTMF digits, or
speech recognition to query or deliver information.
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