Transaction Network, Telephones, and Terminals: Polled Access Interface

Transaction Network Service as described in an accompanying paper 1 provides the means of transmitting messages among a number of different Transaction telephones or terminals and Customer Service Centers via a message switch. This paper describes the Polled Access Interface (and the corresponding network) which interconnects polled terminals such as the Transaction III terminal 2 and the Transaction Network message switch. The emphasis is on service features and terminal interface protocol. Engineering, maintenance, and administration of the Polled Access Network are described in Ref. 3.