IMPOSEBDSL.indd 1 IMPOSEBDSL.indd 14.05.2004, 16:50:34 14.05.2004,

05.2004 [email protected]

website at: http://www.itu.int/ITU-T at: website

dation activities, please check the ITU-T Study Groups Groups Study ITU-T the check please activities, dation future services future

For more information on ongoing GPON Recommen- GPON ongoing on information more For

to today’s and today’s to

Quadrature Amplitude Modulation (QAM). Modulation Amplitude Quadrature

fast access fast

Line code: Discrete MultiTone (DMT) or, alternatively, alternatively, or, (DMT) MultiTone Discrete code: Line

the same group of twisted pairs. twisted of group same the

Your

plans that allow asymmetric and symmetric services in in services symmetric and asymmetric allow that plans

Mbit/s on twisted pairs. It includes worldwide frequency frequency worldwide includes It pairs. twisted on Mbit/s

tric and symmetric aggregate data rates up to tens of of tens to up rates data aggregate symmetric and tric

· Handshake procedures Handshake ·

One copper pair. Permits the transmission of asymme- of transmission the Permits pair. copper One

Modulation) Modulation)

tion

T-A TelsCddPleApiue Amplitude Pulse Coded (Trellis TC-PAM ·

Vr ihseddgtlsbcie iefud- founda- line subscriber digital speed high Very , G.993.1

· QAM (Quadrature Amplitude Modulation) Amplitude (Quadrature QAM ·

· DMT (Discrete MultiTone) (Discrete DMT ·

VDSL

Modulation techniques such as: such techniques Modulation

· Advanced technology Advanced ·

Line code: Discrete MultiTone (DMT). MultiTone Discrete code: Line

nal support of higher net data rates. data net higher of support nal

tal signals over existing copper wire infrastructure infrastructure wire copper existing over signals tal

16 Mbit/s downstream and 800 kbit/s upstream. Optio- upstream. kbit/s 800 and downstream Mbit/s 16

Provides cost-effective transport of high-speed digi- high-speed of transport cost-effective Provides

One copper pair. Net data rate ranging up to a minimum of of minimum a to up ranging rate data Net pair. copper One

· Exploiting existing infrastructure existing Exploiting ·

(ADSL2+)

rncies–Etne adit DL ADSL2 bandwidth Extended – transceivers

· 64 kbit/s-based voice and data services data and voice kbit/s-based 64 ·

Aymti iia usrbrLn AS) (ADSL) Line Subscriber Digital Asymmetric , G.992.5

· N-ISDN and B-ISDN and N-ISDN ·

· Frame relay services relay Frame ·

Line code: Discrete MultiTone (DMT). (DMT). MultiTone Discrete code: Line

· ATM-based services ATM-based ·

support of higher net data rates. data net higher of support

· Audio/video services Audio/video ·

8 Mbit/s downstream and 800 kbit/s upstream. Optional Optional upstream. kbit/s 800 and downstream Mbit/s 8

· IP-based services IP-based ·

One copper pair. Net data rate ranging up to a minimum of of minimum a to up ranging rate data Net pair. copper One

· Support for wide range of services of range wide for Support ·

transceivers 2 (ADSL2) 2 transceivers

Aymti iia usrbrln line subscriber digital Asymmetric , G.992.3

means

Line code: Discrete MultiTone (DMT). (DMT). MultiTone Discrete code: Line

support of higher net data rates. data net higher of support

6 Mbit/s downstream and 640 kbit/s upstream. Optional Optional upstream. kbit/s 640 and downstream Mbit/s 6 Digital Subscriber Line Subscriber Digital

One copper pair. Net data rate ranging up to a minimum of of minimum a to up ranging rate data Net pair. copper One

transceivers

– Phoneline networking transceivers networking Phoneline – G.989.x Aymti iia usrbrln AS) (ADSL) line subscriber digital Asymmetric , G.992.1

ber line (DSL) transceivers (DSL) line ber

– Physical layer management for digital subscri- digital for management layer Physical – G.997.1 ADSL

(DSL) transceivers (DSL)

– Test procedures for digital subscriber line line subscriber digital for procedures Test – G.996.1

(TC-PAM). (TC-PAM).

Recommendations

Line code: Trellis Coded Pulse Amplitude Modulation Modulation Amplitude Pulse Coded Trellis code: Line

– Overview of digital subscriber line (DSL) (DSL) line subscriber digital of Overview – G.995.1

extensions allow net data rates up to 5.696 Mbit/s. 5.696 to up rates data net allow extensions

transceivers

Net data rate of 192 kbit/s to 2.312 Mbit/s. Optional Optional Mbit/s. 2.312 to kbit/s 192 of rate data Net

– High bit rate digital subscriber line (HDSL) (HDSL) line subscriber digital rate bit High – G.991.1

operation for extended reach or higher net data rates. rates. data net higher or reach extended for operation

Duplex operation over one copper pair. Optional multi-pair multi-pair Optional pair. copper one over operation Duplex

Related Recommendations Related

(SHDSL) transceivers (SHDSL)

Snl-arhg-pe iia usrbrln line subscriber digital high-speed Single-pair , G.991.2

to various DSL transceivers. DSL various to

application requirements as well as parameters pertinent pertinent parameters as well as requirements application SHDSL

operation. It includes parameters relating to service and and service to relating parameters includes It operation.

exchange capabilities and to select a common mode of of mode common a select to and capabilities exchange

Provides a flexible mechanism for DSL transceivers to to transceivers DSL for mechanism flexible a Provides

Standards

line (DSL) transceivers (DSL) line

The leader on DSL on leader The

G.994.1 Hnsaepoeue o iia usrbr subscriber digital for procedures Handshake ,

International Telecommunication Union Telecommunication International

ITU-T Handshake

Customer Premises Handshake procedures Central Office for DSL transceivers

Video xTU-R, xTU-C, Transceiver Unit, Transceiver Unit, – B-ISDN Services Remote end Central Office end – Video Services, e.g. Video on Demand – IP-Based Services – Leased Lines

Audio xTU-R xTU-C

Subscriber Line Copper Twisted Pair Splitter Splitter Data – N-ISDN Services – PSTN

Voice UNI/XNI SNI User Network Interface Service Node Interface

SHDSL Single-pair high-speed digital subscriber line ADSL/ADSL2/ADSL2+ Asymmetric digital subscriber line VDSL Very high speed digital subscriber line

ITU-T is responsible for the development of Recommendations in the area of "Transceivers for customer access and in-premises phone line networking systems on metallic pairs". For more detailed information, see also Recommendation G.995.1, "Overview of digital subscriber line (DSL) Recommendations".

14.05.2004, 16:50:34 14.05.2004, 1 IMPOSEBDSL.indd

05.2004 [email protected]

website at: http://www.itu.int/ITU-T at: website

dation activities, please check the ITU-T Study Groups Groups Study ITU-T the check please activities, dation future services future

For more information on ongoing GPON Recommen- GPON ongoing on information more For

to today’s and today’s to

Quadrature Amplitude Modulation (QAM). Modulation Amplitude Quadrature

fast access fast

Line code: Discrete MultiTone (DMT) or, alternatively, alternatively, or, (DMT) MultiTone Discrete code: Line

the same group of twisted pairs. twisted of group same the

Your

plans that allow asymmetric and symmetric services in in services symmetric and asymmetric allow that plans

Mbit/s on twisted pairs. It includes worldwide frequency frequency worldwide includes It pairs. twisted on Mbit/s

tric and symmetric aggregate data rates up to tens of of tens to up rates data aggregate symmetric and tric

· Handshake procedures Handshake ·

One copper pair. Permits the transmission of asymme- of transmission the Permits pair. copper One

Modulation) Modulation)

tion

T-A TelsCddPleApiue Amplitude Pulse Coded (Trellis TC-PAM ·

Vr ihseddgtlsbcie iefud- founda- line subscriber digital speed high Very , G.993.1

· QAM (Quadrature Amplitude Modulation) Amplitude (Quadrature QAM ·

· DMT (Discrete MultiTone) (Discrete DMT ·

VDSL

Modulation techniques such as: such techniques Modulation

· Advanced technology Advanced ·

Line code: Discrete MultiTone (DMT). MultiTone Discrete code: Line

nal support of higher net data rates. data net higher of support nal

tal signals over existing copper wire infrastructure infrastructure wire copper existing over signals tal

16 Mbit/s downstream and 800 kbit/s upstream. Optio- upstream. kbit/s 800 and downstream Mbit/s 16

Provides cost-effective transport of high-speed digi- high-speed of transport cost-effective Provides

One copper pair. Net data rate ranging up to a minimum of of minimum a to up ranging rate data Net pair. copper One

· Exploiting existing infrastructure existing Exploiting ·

(ADSL2+)

rncies–Etne adit DL ADSL2 bandwidth Extended – transceivers

· 64 kbit/s-based voice and data services data and voice kbit/s-based 64 ·

Aymti iia usrbrLn AS) (ADSL) Line Subscriber Digital Asymmetric , G.992.5

· N-ISDN and B-ISDN and N-ISDN ·

· Frame relay services relay Frame ·

Line code: Discrete MultiTone (DMT). (DMT). MultiTone Discrete code: Line

· ATM-based services ATM-based ·

support of higher net data rates. data net higher of support

· Audio/video services Audio/video ·

8 Mbit/s downstream and 800 kbit/s upstream. Optional Optional upstream. kbit/s 800 and downstream Mbit/s 8

· IP-based services IP-based ·

One copper pair. Net data rate ranging up to a minimum of of minimum a to up ranging rate data Net pair. copper One

· Support for wide range of services of range wide for Support ·

transceivers 2 (ADSL2) 2 transceivers

Aymti iia usrbrln line subscriber digital Asymmetric , G.992.3

means

Line code: Discrete MultiTone (DMT). (DMT). MultiTone Discrete code: Line

support of higher net data rates. data net higher of support

6 Mbit/s downstream and 640 kbit/s upstream. Optional Optional upstream. kbit/s 640 and downstream Mbit/s 6 Digital Subscriber Line Subscriber Digital

One copper pair. Net data rate ranging up to a minimum of of minimum a to up ranging rate data Net pair. copper One

transceivers

– Phoneline networking transceivers networking Phoneline – G.989.x Aymti iia usrbrln AS) (ADSL) line subscriber digital Asymmetric , G.992.1

ber line (DSL) transceivers (DSL) line ber

– Physical layer management for digital subscri- digital for management layer Physical – G.997.1 ADSL

(DSL) transceivers (DSL)

– Test procedures for digital subscriber line line subscriber digital for procedures Test – G.996.1

(TC-PAM). (TC-PAM).

Recommendations

Line code: Trellis Coded Pulse Amplitude Modulation Modulation Amplitude Pulse Coded Trellis code: Line

– Overview of digital subscriber line (DSL) (DSL) line subscriber digital of Overview – G.995.1

extensions allow net data rates up to 5.696 Mbit/s. 5.696 to up rates data net allow extensions

transceivers

Net data rate of 192 kbit/s to 2.312 Mbit/s. Optional Optional Mbit/s. 2.312 to kbit/s 192 of rate data Net

– High bit rate digital subscriber line (HDSL) (HDSL) line subscriber digital rate bit High – G.991.1

operation for extended reach or higher net data rates. rates. data net higher or reach extended for operation

Duplex operation over one copper pair. Optional multi-pair multi-pair Optional pair. copper one over operation Duplex

Related Recommendations Related

(SHDSL) transceivers (SHDSL)

Snl-arhg-pe iia usrbrln line subscriber digital high-speed Single-pair , G.991.2

to various DSL transceivers. DSL various to

application requirements as well as parameters pertinent pertinent parameters as well as requirements application SHDSL

operation. It includes parameters relating to service and and service to relating parameters includes It operation.

exchange capabilities and to select a common mode of of mode common a select to and capabilities exchange

Provides a flexible mechanism for DSL transceivers to to transceivers DSL for mechanism flexible a Provides

Standards

line (DSL) transceivers (DSL) line

The leader on DSL on leader The

Hnsaepoeue o iia usrbr subscriber digital for procedures Handshake , G.994.1

International Telecommunication Union Telecommunication International

ITU-T Handshake

Customer Premises Handshake procedures Central Office for DSL transceivers

Video xTU-R, xTU-C, Transceiver Unit, Transceiver Unit, – B-ISDN Services Remote end Central Office end – Video Services, e.g. Video on Demand – IP-Based Services – Leased Lines

Audio xTU-R xTU-C

Subscriber Line Copper Twisted Pair Splitter Splitter Data – N-ISDN Services – PSTN

Voice UNI/XNI SNI User Network Interface Service Node Interface

SHDSL Single-pair high-speed digital subscriber line ADSL/ADSL2/ADSL2+ Asymmetric digital subscriber line VDSL Very high speed digital subscriber line

ITU-T is responsible for the development of Recommendations in the area of "Transceivers for customer access and in-premises phone line networking systems on metallic pairs". For more detailed information, see also Recommendation G.995.1, "Overview of digital subscriber line (DSL) Recommendations".