A data network service (similar to Bonjour) that allows devices to publish and discover nodes running on a Local Area Network. Avahi is an example of a zeroconf networking implementation. Other zeroconf systems include Bonjour (licensed by Apple).

Buffer size

The buffer size sets the amount of data stored (in memory) before each data packet is transmitted or played out. In an audio system, the smaller the buffer size, the lower the latency, but the more susceptible to drop-outs.


The name of Lawo's RAVENNA processing hardware device. The COMi.MX forms a sub-component of most of Lawo's RAVENNA IO cards.


Digital and Line Level Interface System

The name of Lawo's configurable IO device. Each DALLIS frame can be fitted with a combination of plug-in IO cards (analog, AES, MADI, RAVENNA, GPIO, etc.).


A non-proprietary TCP/IP interface protocol. An Ember+ provider can "publish" parameters which may then be used by an Ember+ consumer. For example, to display information or enable control from a remote device.

More information on GitHub


A stand-alone routing matrix with networking capabilities; this is a large matrix related to the mc2 series of Lawo consoles.


A real-time, network-synchronized Audio over IP protocol.

RAVENNA offers real-time distribution of audio and other media content within IP-based network environments. Parts of RAVENNA have been standardized by the AES as AES67.

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.


Real-time Transport Protocol

A networking protocol that defines a standard packet format for delivering audio and video over data networks.


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).


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.


Session Initiation Protocol

A networking protocol/URL address, commonly used within Voice-over-IP systems.


Time-Division Multiplexing

A common method of transporting signals via a point-to-point connection. In Lawo devices, TDM is used internally to transport audio along the backplane - e.g. from a I/O or DSP card to the routing matrix, and vice versa.