An SD Master Station (AKA MPRS) can operate as a master (or AP if in packet with mac), a repeater, or a remote. It cannot operate as a store and forward remote.
An SD Master Station can be redundant or non-redundant.
An SD Master Station should identify as an SD Master Station via DLINK, regardless of whether it is a master, a repeater, or a remote.
An SD Master Station repeater:
Is the master in terms of frequency plan: it is the “point” in the “point to multipoint” RF network.
Is usually just called “the repeater”
Repeats everything it hears byte by byte
May or may not have an RTU connected.
Is not the AP for packet with mac mode
When a repeater is used in a network, the remote that is connected to the polling application (and Pulsenet) is called a “polling remote”
A “polling remote”:
Uses remote frequencies
May be an X710 or SD, but is often a Master Station.
Is the DLINK root
Is the AP when using packet with mac
An SD Master Station should be identified as an SD Master Station regardless of its purpose in the network, just as an SD is an SD regardless of whether it is an access point or remote.