Verizon Network Manager Nodes Bedienungsanleitung Seite 4

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4
Verizon Proprietary – not for use
without Verizon’s permission
Transport Network of the 1980’s
Access
Service
END USER
Location
Verizon Central Offices Inter -Office
Carrier POP
Location
Access
Service
END USER
Location
Verizon Central Offices Inter -Office
POTS
Lines
Entrance
Facility
PSTN
DS1
Private Line
DDS /VG
Private Line
DS0 to DS1
Multiplexing
DS1 to DS3
Multiplexing
DS3
Handoff
POTS lines connected to End Office switches
End office Switches and Carriers connected to Tandem Switches
DDS and VG private line circuits terminated in DS0 to DS1 multiplexers
All of these services, combined with DS1 private Line, got aggregated onto
DS3s for delivery to a Carrier’s POP Location
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