The following lines were added (+) and removed (-):
DSL - Digital Subscriber Line* DSL - Digital Subscriber LineADSL - Asymmetric Digital Subscriber Line* ADSL - Asymmetric Digital Subscriber LineCO - Central Office (service provider)* CO - Central Office (service provider)DSLAM - DSL Access Multiplexer* DSLAM - DSL Access MultiplexerPSTN - Public Switched Telephone Network* PSTN - Public Switched Telephone NetworkFDM - Frequency Division Multiplexing* FDM - Frequency Division MultiplexingPOTS - Plain Old Telephone Service* POTS - Plain Old Telephone ServiceCAP - Carrierless Amplitude Phase* CAP - Carrierless Amplitude PhaseDMT - Discrete MultiTone* DMT - Discrete MultiToneQAM - Quadrature Amplitude Modulation* QAM - Quadrature Amplitude ModulationDWMT - Discrete Wavelet MultiTone* DWMT - Discrete Wavelet MultiToneR-ADSL - Rate-Adaptive Digital Subscriber Line * R-ADSL - Rate-Adaptive Digital Subscriber Line HDSL - High Bit-Rate Digital Subscriber Line* HDSL - High Bit-Rate Digital Subscriber LineVDSL - Very High Bit-rate Digital Subscriber Line* VDSL - Very High Bit-rate Digital Subscriber Line