User's Manual

Glossary A-3
M
MAC (Medium Access Control)
A communications protocol. The MAC protocol is used to provide
the data link layer of an Ethernet LAN system.
N
Normal Mode
A CBS operating mode where each CBS communicates with its
assigned ESLs using 2 of the 24 available timeslots, such as 1-13, 2-
14, 3-15, and so forth. This mode is used for normal day-to-day store
operations to provide the minimum amount of communication air
time resulting in the most efficient environment for co-existence
with other RF devices in the store.
R
RealPrice Database
A MySQL database used to store information relative to all ESL
management.
RealPrice Software Controller
This refers to the In-Store Processor (ISP) or a Dedicated PC (DPC).
This is the computer physically connected to the primary CBS that
sends price information from the PLU file to the RealPrice System
for display on ESLs.
RealPrice Standalone System
A system that runs the RealPrice Software on a dedicated PC
separate from the ISP. In this situation the DPC has a copy of the
store data base and communicates with the ISP to receive
maintenance (price update) data.
RF (Radio Frequency)
S
Store ID
A unique number is assigned to each store and used by the
RealPrice System to prevent unintentional transmission of signals
between stores.