Overflow - Alternative Routing - Rerouting - Automatic Repeat Attempt - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp
When a call cannot find a free circuit in one group of circuits (fist choice), technical arrangements can be made to route the call automatically via another group of circuits (second choice), at the same exchange; this process is called overflow. There m