A__mic8 / A__digital8 User Guide
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14. Glossary
PTP
Precision Time Protocol.
An ultra-precise, Synchronization method used in data networks. The PTPv2 protocol
can be used as the sync reference for all RAVENNA devices in a network.
QoS
Quality of Service
The QoS defines the overall performance of a computer network. Several factors are
considered: error rates, bandwidth, throughput, transmission delay, availability, jitter,
etc. See also DSCP.
RAVENNA
A real-time, network-synchronised Audio over IP protocol.
RAVENNA offers real-time distribution of audio and other media content within IP-
based network environments.
Remote MNOPL
The remote control protocol RemoteMNOPL is a LAN based client-server network byte
order protocol to enable third party systems to control Lawo’s digital mixing consoles
or standalone routers.
RTP
Real-time Transport Protocol
A networking protocol that defines a standard packet format for delivering audio and
video over data networks.
RTCP
Real-time Transport Control Protocol
Works in conjunction with RTP. While RTP carries the media streams (audio and
video), RTCP is used to monitor the transmission statistics and Quality of Service
(QoS).
RTSP
Real-time Transport Streaming Protocol
A networking protocol/URL address, commonly used in establishing point-to-point
media sessions.
Sample Rate
The speed at which the Processing of the system takes samples respective to values
from a continuous, analogue audio signal to make a discrete, digital one. For
example, when running at 48kHz, incoming analogue audio is sampled at a rate of
48000 values per second.
SDP
Session Description Protocol
A format for describing streaming media communications parameters.
SFP
Small Form-factor Pluggable transceiver.
A hot-pluggable device which can be used to offer a choice of connection methods -
e.g. multi-mode fibre, single-mode fibre, etc.
SIP
Session Initiation Protocol
A networking protocol/URL address, commonly used within Voice-over-IP systems.
SMPTE 2022-7
SMPTE 2022 is a standard from the Society of Motion Picture and Television
Engineers (SMPTE) that describes how to send digital video over an IP network. The
standard is published in seven parts. The seventh part (SMPTE 2022-7) describes the
Seamless Protection Switching of SMPTE ST 2022 IP datagrams. Within a
RAVENNA streaming network, the technology is used to provide redundant streaming
between two nodes.
SPS
Seamless Protection Switching. See SMPTE 2022-7.
Subnet
See IP Address.
TCP
Transmission Control Protocol
A protocol that provides reliable, ordered, and error-checked delivery of a stream
of octets (bytes) between applications running on hosts communicating via an IP
network.
