Glossary
Dialogic® Vision™ CX Video Gateway Administration Manual
audio data) are conducted over lines designed to carry packet-switched
(connectionless) data.
S
SCCP:
Signaling connection control part; an SS7 protocol that provides both
connection-oriented and connectionless data transfer over an SS7 network. It
extends the service provided by the SS7 MTP layers by adding extended
addressing capabilities and multiple classes of service. The SCCP addressing
capabilities allow a message to be addressed to an individual application or
database within a signaling point. See also SS7.
SDP:
Session description protocol, a protocol that defines a text-based format for
describing streaming media sessions and multicast transmissions.
Signaling Server:
An optional component of the Vision™ Server that provides
redundant and scalable ISUP signaling.
SIP:
Session initiation protocol. An IP signaling and telephony control protocol used
mainly for voice over IP calls and multimedia communications. SIP relies on
the session description protocol (SDP) for session description and the Real
Time Transport Protocol (RTP) for actual transport.
SRGS:
Speech Recognition Grammar Specification (SRGS); a syntax for representing
the grammars used in speech recognition.
SS7:
Signaling system 7; an out-of-band signaling system that provides fast call
setup using circuit-switched connections and transaction capabilities for
remote database interactions.
SSML:
Speech Synthesis Markup Language; a proposed standard for enabling access
to the internet using speech. SSML provides a standard way to control various
aspects of speech (such as pronunciation, volume, pitch, and rate) over a
variety of platforms.
SSML Processor:
Component of the Dialogic® Vision™ VX Integrated Media
Platform that processes SSML requests for audio and text-to-speech.
T
T.38 fax:
A standard for real-time fax over IP that makes it possible for fax
machines from different vendors to talk to each other over IP networks. The
T.38 standard defines how to conduct group 3 facsimile transmission between
terminals in which a portion of the transmission path between terminals
includes (besides the PSTN or ISDN) an IP network such as the internet.
TCAP:
Transaction capabilities application part; an SS7 protocol that provides
applications with transaction support over the SS7 network. It enables the
exchange of non-circuit related data, such as database queries and responses
and remote feature invocation requests between SS7 signaling points. The
TCAP layer relies on both the MTP and SCCP layers for message addressing
and delivery.
TDM:
Time division multiplexing; a technique for transmitting a number of separate
data, voice, or video signals simultaneously over one communications medium
by quickly interleaving a piece of each signal one after another.
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