Muxes are locations at which services can be found. On traditional networks (DVB-C, -T and -S), these are carrier signals on which the individual channels are multiplexed, hence the name. However, Tvheadend also uses the term 'mux' to describe a source for multiple IP streams - so an IP address, in effect.
<dd>Whether or not to retrieve EPG information from the mux.
<dt>Network
<dd>The name of the network to which the mux belongs. Networks are defined in Configuration -> DVB Inputs -> Networks - DVB-S or ATSC, for example.
<dt>Original Network ID
<dd>The ONID is a code which uniquely identifies a network.
<dt>Transport Stream ID
<dd>The TSID is a code which identifies the network origination source or transmitter.
<dt>CRID Authority
<dd>The group responsible for the Content Reference Identifier for this mux. This is effectively a URL/URI to an authoritative source for programme data (e.g. series link).