Panasonic Panafax UF-650 - Manual (Page 116)

Figure 2 shows Sample Network B as seen from New York. London and
Singapore are both Relay Stations which are connected with New York in
series. Viewed from New York, the Singapore Relay Station is an End
Receiving Station like the other stations. This is a more complex network
configuration using two Relay Stations in which you may still send a
document with one operation to any combination of stations via the main
Relay Station in Birmingham.
However, in this case the End Receiving Stations, Tokyo, Hong Kong,
Sydney and Wellington will be served via the Singapore Relay Station. It
should be noted that the two Relay Stations will only be used when the
Initial Sending Station in New York Specifies more than one End
Receiving Station off the second Relay Station. If only one End Receiving
Station is specified, then this will automatically be included in the
broadcast via the first Relay Station. More than one Relay Network may
be configured within these constraints.