AN (Access Network)：接入網(wǎng)

SN (Service Node)：業(yè)務(wù)節(jié)點

SNI (Service Node Interface)：業(yè)務(wù)節(jié)點接口，用戶接入網(wǎng)和一個業(yè)務(wù)節(jié)點之間的接口

PSTN (Public Switched Telephone Network)：公用交換電話網(wǎng)

ISDN (Integrated Services Digital Network)：綜合業(yè)務(wù)數(shù)字網(wǎng)
B-ISDN (Broadband ISDN)：寬帶綜合業(yè)務(wù)數(shù)字網(wǎng)
N-ISDN (Narrowband ISDN)：窄帶綜合業(yè)務(wù)數(shù)字網(wǎng)

UNI (User Network Interface)：用戶網(wǎng)絡(luò)接口

TMN (Telecommunication Management Network)：通信管理網(wǎng)

DSL (Digital Subscriber Line)：數(shù)字用戶線
ADSL (Asymmetric DSL)：非對稱數(shù)字用戶線
HDSL (High-Data-Rate DSL)：高數(shù)據(jù)率數(shù)字用戶線
VDSL (Very-High-Data-Rate DSL)：極高數(shù)據(jù)率數(shù)字用戶線

FTTC (Fiber To The Curb)：光纖到路邊
FTTB (Fiber To The Building)：光纖到大樓
FTTH (Fiber To The Home)：光纖到家庭
FTTO (Fiber To The Office)：光纖到辦公室
FTTR (Fiber To The Remote module)：光纖到遠(yuǎn)端模塊