SONET

1
CLEC Access to Line Shared Data Subloop or Copper
Subloop
CLEC ATM
LEC Remote Terminal Site
SONET Common
CLEC Physical Collocation
200-600 Living Units / SAI
Fiber Feeder
POTS
8db UNE Loop
OC 3 Voice
CLEC Virtual Collocation (ASI)
ATM
ADSL
Copper Feeder
SONET Common
POTS and Data
Copper Subloop
ADSL
OC 3 Data
SAI/SAC
Optical Concentration Device
16-24 RTs / WC
8 dB UNE
POTS
CLEC Remote Terminal
Class 5 Local Digital Switch
3-5 SAIs / RT
SONET Common
LEC or CLEC Copper
ADSL

POTS and Data
COT
ADSL
SAI/SAC
8 dB UNE
ATM
CLEC Fac
Telco Fac/service
Telco Central Office
CLEC Collocation
OCD Port UDT
Feeder UNE
Line Shard Subloop UNE