E.F. Johnson Company 5100 ES Operating Manual page 138

Multi-Net Features
Channel - A channel selects a group encode/decode ID pair (indicated by an alias),
system, access priority, and other information. The system associated with a channel is
programmed with a home channel which together with the encode and decode IDs
determine the recipient of a call and also which calls are received. Refer to Section 3.9.5
for more information.
Group ID - Group IDs are selected by Channels with this radio. Refer to the preceding
"Channels" definition for more information.
Home Channel Aliasing - With some Multi-Net radios, this is a method of assigning calls
to non-existent home repeaters to increase the number of Group calls that can be
programmed on a Multi-Net radio system. Use of Home Channel Aliasing disables
MultiNet Home Channel Backup.
Home Channel Backup - Each MultiNet radio site is programmed with a status and home
channel. In the event of the loss of the status channel the radio may scan between the home
and status channels for receive traffic and attempt to access the repeater site on the home
channel.
Home Repeater Number - With standard Group calls selected by a Channel, the home
repeater number and Group ID form the "address" of a call. Multi-Net supports up to 30
home repeaters (one of which is the status repeater) with up to 225 Group IDs assignable
per home repeater.
Home Repeater – A repeater channel attached to the repeater high speed data bus. These
channels are generally used as trunking channels but may also provide primary site access
if the status channel is not detected. A home repeater provides in use call information for
all calls active on the site matching the home repeater number.
Individual (Unique) ID - A unique number from 1-8163 assigned to each subscriber unit.
Although this number is assignable on a per System basis, a subscriber unit is usually
assigned the same number on each Systems it accesses.
Mobile - Generally a radio mounted in a vehicle. However, this term may also be used
generically to refer to any radio, either mobile or portable. See also Subscriber Unit.
Portable - A small handheld radio usually battery powered and carried by a person. See
also "Subscriber Unit".
Site - This refers to the status and home repeaters at a geographical site that are
interconnected by a common high-speed data bus. Up to 30 Multi-Net repeaters can be
interconnected. If there are other Multi-Net repeaters at a site that are interconnected by a
different data bus, they are considered part of a different Site. One site repeater is the
Status Repeater (see following) and the other (up to 29) can be assigned as Home
Repeaters. A unique Multi-Net system key may be assigned to each site.
Status Repeater - Each Multi-Net Site has one of its repeaters designated to provide call
information for all calls occurring on the Site. It is normally a continuous transmit channel
monitored by the subscriber units for information needed to place and receive calls. This
repeater is usually not assigned as a home repeater.
7-2 ES Series Models II/III Portable Radio Operating Manual