HUT Comms Lab., Timo O. Korhonen
Present-day PSTN ‘terminals1’
nFixed-line
phones (analog, ISDN)
nCordless
phones (PBX-RF interface: DECT2)
nFax
nPay
phones
nPrivate
Branch Exchange (PBX)
nGateways
to Public Land Mobile Networks (PLMN):
nGSM
nwireless
local area networks (WLAN)
nLocal
loop data extensions
nmodems
nADSL
technology
n(leased
lines)
1Means here interfaces to other nets & equipment
2DECT: Digital Enhanced Cordless Telecommunications