Collective routing is
routing in which a
switching center automatically delivers
message
A message is a discrete unit of communication intended by the source for consumption by some recipient or group of recipients. A message may be delivered by various means, including courier, telegraphy, carrier pigeon and electronic bus.
A ...
s to a specified list of destinations.
Collective routing avoids the need to list each single
address
An address is a collection of information, presented in a mostly fixed format, used to give the location of a building, apartment, or other structure or a plot of land, generally using political boundaries and street names as references, along ...
in the
message heading.
Major
relay
A relay
Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts
An automotive-style miniature relay with the dust cover taken off
A relay is an electrically operated switch ...
stations usually transmit messages bearing collective-routing indicators to tributary, minor, and other major relay stations.
References
Routing
{{telecomm-stub