Public Switched
Telephone Network (PSTN II/II)
Connection-oriented and connectionless switching
Transfer modes & connections summarized
Example of cell
switching:
Distributed queue dual buss (DQDB)
Connecting into PSTN exchange: Equipment in the access network
Exchange user services (examples)
The space-switch (used as a cross-switch and concentrator)
The time-space-time (TST) switch
PSTN ISDN exchange
interfaces (Q.512)
Exchange interfaces and tasks, V1
Exchange interfaces and tasks, V2-V4
Exchange interfaces and tasks, V5
Connecting the local
loop:
Line interface circuit (LIC)
Line interface circuit components
PSTN operation and maintenance (Q.513)
Subscriber signaling for local calls
Inter exchange signaling (cont.)
Example of inter-exchange signaling
Inter-exchange signaling (cont.)