ITU-T Q.462-1989 Signalling Procedures - Signalling between the Outgoing International R2 Register and an Incoming R2 Register in an International Exchange - Specifications of Signalling Systems R1 and R2 (Study Group XI) 3 pp
The address signals from an operator or a subscriber must be stored in an outgoing international R2 register. When a sufficient number of digits is available an outgoing link is selected and a seizing (line) signal is sent. When the seizing signal is reco
ITU-T Q.462-1989 history
1989ITU-T Q.462-1989 Signalling Procedures - Signalling between the Outgoing International R2 Register and an Incoming R2 Register in an International Exchange - Specifications of Signalling Systems R1 and R2 (Study Group XI) 3 pp