Related articles:
Telephone network
Plain old telephone service
Routing in the PSTN
Circuit switching
Calling party
Local loop
Broadband Integrated Services Digital Network
Digital Signal 1
Telephone exchange
Cable modem
Time-division multiplexing
V5 interface
E.164
Cellular network
Communications satellite
Key terms:
telephone
network
pstn
exchange
services
use
switched
digital
call
circuit
telephone network
signal
analog
telephone exchange
local
public
user
countries
private
equipment
large
hierarchy
reference point
technology
telecommunications
multiplexer
circuit switched
channel
operators
traffic
public switched telephone network
required
together
connected
trunks
bell
telephone service
routing
systems
wired
access network
cable
transmission
standards
loop
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