Table of Contents
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ADSL2+ Tester
1. Overview ..........................................................................................................3
1.1
Symbol Descriptions........................................................................................ 3
1.2
Product Overview............................................................................................ 3
1.3
Basic Functions .............................................................................................. 4
1.4
Main Features ................................................................................................ 5
1.5
Product Composition ....................................................................................... 6
1.6
General Specifications ..................................................................................... 8
2. Getting Started ...............................................................................................10
2.1
General Information ...................................................................................... 10
2.2
Unpacking Check .......................................................................................... 10
3. Manipulation ...................................................................................................11
3.1
LED Indicators.............................................................................................. 11
3.2
Functional Keyboard...................................................................................... 13
3.3
Preparations for Operation.............................................................................. 15
3.4
Brief Menu Introduction ................................................................................. 15
3.5
Communication with PC ................................................................................. 16
3.6
Rechargeable Batteries and Charge.................................................................. 17
3.7
Power Management....................................................................................... 20
3.8
Safety Precautions ........................................................................................ 20
4. Navigating the Displays ...................................................................................24
4.1
Menu Structure ............................................................................................ 24
4.2
"Settings" Menu............................................................................................ 26
4.3
"Results" Menu............................................................................................. 41
4.4
"Storages" Menu........................................................................................... 50
4.5
"Others" Menu.............................................................................................. 53
5. Performing Measurements...............................................................................57
5.1
Overview..................................................................................................... 57
5.2
Basic Information ......................................................................................... 57
5.3
Performing Measurements .............................................................................. 61
72-0046-03A
Contents
Contents
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Summary of Contents for Xiaguang XP XG2045
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Page 1: Table Of Contents
ADSL2+ Tester Contents Contents 1. Overview ......................3 Symbol Descriptions..................3 Product Overview.................... 3 Basic Functions ....................4 Main Features ....................5 Product Composition ..................6 General Specifications ..................8 2. Getting Started ....................10 General Information ..................10 Unpacking Check ..................10 3. - Page 2 ADSL2+ Tester Contents 6. Working with TestManagerPro ................ 65 Software Functions ..................65 System Configuration and Running Environment..........65 Install and Uninstall the Software on the PC............66 How to Use TestManagerPro ................66 7. Troubleshooting ..................... 69 8. Glossary ......................70 72-0046-03A...
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Page 3: Overview
ADSL2+ Tester 1 Overview 1. Overview This chapter is intended to give first-time users a quick overview of the symbols used in the manual, the main functions, features, compositions and the general specifications of ADSL2+ Tester. Symbol descriptions Product overview Basic functions Main features Product compositions... -
Page 4: Basic Functions
ADSL2+ Tester 1 Overview snap. Whether for installation, maintenance and/or troubleshooting of ADSL circuits, ILECs, CLECs and sub-contracting business installers will agree that this ADSL Tester is the right tool for the job! It accurately verifies that the local loop can carry the promised service. 1.3 Basic Functions Ÿ... -
Page 5: Main Features
ADSL2+ Tester 1 Overview Counts for total BERT bits tested ü Counts for BERT bit errors ü Bit Error Ratio statistics ü Ÿ Loop line measurements (DMM): Loop DC and VC voltage: -400V～+400V ü Loop DC current: 0～80mA ü Loop resistance: 0～40000Ω ü... -
Page 6: Product Composition
ADSL2+ Tester 1 Overview Ÿ Handheld structure, durable design, suitable for carrying around and on-spot measurements Ÿ Embedded with Broadcom chipset, good compatibility Ÿ Comply with multi-standards: ITU-T G.992.1 (G.DMT), ITU-T G.992.2 (G.lite), ITU-T G.992.3 (ADSL2), RE-ADSL, ITU-T G.992.4 (Splitterless ADSL2), ITU-T G.992.5 (ADSL2+), ITU-T G.992 Annex A, Annex B, Annex C (FBM and DBM), ANSI T1.413 Issue 2, YDN078-1998 Ÿ... - Page 7 ADSL2+ Tester 1 Overview Ÿ Face panel: LCD display, LED alarm and status indicators, keyboard Ÿ Back panel: four frangible labels and serial number label Ÿ Front panel: ADSL interfaces connector, LAN interface connector and 12VDC input jack Ÿ Rear panel: End cover. Press the shrapnel to unpack the end cover, and you can see the battery compartment and RS232 port jack.
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Page 8: General Specifications
ADSL2+ Tester 1 Overview Ÿ AC Power Adapter Ÿ RS-232 Communication Cable Ÿ Automobile Cigarette Lighter Battery Adapter Cable Ÿ TestManagerPro Setup CD Ÿ User’s Manual See Fig 2 (Appearance of the tester). RS-232 Automobile Cigarette Waterproof Package AC Adapter Communication Cable Lighter Battery Adapter ADSL Test... - Page 9 ADSL2+ Tester 1 Overview ITU-T G.992.1 (G.DMT), ITU-T G.992.2 (G.lite), ITU-T G.992.3 (ADSL2), RE-ADSL, ITU-T G.992.4 (Splitterless ADSL2), ITU-T Standards Supported G.992.5 (ADSL2+), ITU-T G.992 Annex A, Annex B, Annex C (FBM/DBM), ANSI T1.413 Issue 2, YDN078-1998 PPP over ATM (PPPoA), PPP over Ethernet (PPPoE), RFC-1483 Encapsulation Bridge (BRIDGE), IP over Ethernet over ATM (MER), IP over ATM Supported...
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Page 10: Getting Started
ADSL2+ Tester 2 Getting Started 2. Getting Started This chapter is intended to introduce unpacking check and attention points in summary. 2.1 General Information 2.2 Unpacking Check 2.1 General Information In order to safely transport, ADSL2+ Tester is packaged by carton. And all the accessories including User’s Manual, CD, Quality Certificate Card, Maintenance Card are placed in the waterproof package. -
Page 11: Manipulation
ADSL2+ Tester 3 Manipulation 3. Manipulation This chapter mainly introduces the alarm LED indicators, functional keyboard, the preparations for operation, brief menu introduction, communication with PC, charge, power management and safety precaution in summary. LED Indicators Functional Keyboard Preparations for Operation Brief Menu Introduction Communicate with PC Rechargeable Batteries and Charge... - Page 12 ADSL2+ Tester 3 Manipulation • “START/STOP” status LED To start or stop the test can be switched by pressing “Start/Stop” key. And in “Start” status, LED is lit green continuously. In “Stop” status, LED will be turned off. • “WAN LINK” status LED This LED indicates whether or not WAN link is normally connected.
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Page 13: Functional Keyboard
ADSL2+ Tester 3 Manipulation automatically shut down soon. 3.2 Functional Keyboard ADSL2+ Tester has 16 functional keys at the front panel, including main functional keys, softkeys, cursor keys, page keys, a backlight key, a power switch key, a start/stop key, a auto test key, etc. - Page 14 ADSL2+ Tester 3 Manipulation In “Line Parameter” test mode, press this key to auto start the test with the “AUTO” line standard. And the displays of LCD will switch to “Result” “Auto Test” menu directly. In “DMM” test mode, press this key to auto detect and test the loop line.
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Page 15: Preparations For Operation
ADSL2+ Tester 3 Manipulation 3.3 Preparations for Operation After unpacking, check if the carton or the appearance of the tester is damaged or not. Check if the tester and its accessories are integrated or not. Plug the AC adapter into an appropriate AC wall outlet. And connect the tester with AC power adapter cable, check if the “Charge”... -
Page 16: Communication With Pc
ADSL2+ Tester 3 Manipulation test after all the settings have already been configured completely. “Results” menu Press the “Result” key to switch to the results menu. All the information that related to the result statistics, performance analysis and measurement readings are provided in the “Results”... -
Page 17: Rechargeable Batteries And Charge
ADSL2+ Tester 3 Manipulation • Switch off the tester firstly. • Open the end cover of the tester. • Connect RS232 interface of the tester to PC serial port with RS232 communication cable (supplied). • Switch on the tester. • Set RS232 port state to in “Others”... - Page 18 ADSL2+ Tester 3 Manipulation Warning: Do not change the battery model! Do not use old and new rechargeable batteries together! Do not use non-recharge battery, in case that may cause the battery explosion or other danger. Caution: When the battery supplied for this tester has been used expiring the charging life or are impaired, they should be dealt with control.
- Page 19 ADSL2+ Tester 3 Manipulation The battery replacement should be strictly conformed to the below instructions. Ø Switched off the tester firstly. Press A and B simultaneously with your fingers and pull the end cover of the tester. Then press the battery compartment lock card C downward slightly and take out the battery case.
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Page 20: Power Management
ADSL2+ Tester 3 Manipulation “Low Battery” Indication When being powered by the battery, this tester can give the early alarm to low battery voltage and the “Low Battery” indicator turns on. After being used for a couple of hours, the battery voltage continues to drop to a low level, and the tester will automatically perform protective shutdown. - Page 21 ADSL2+ Tester 3 Manipulation DC Output: 12V, Max 1500mA. Warning: Do not use other AC power adapter to provide power supply. This instrument has an external power supply which has an autoranging line voltage input. Ensure the line supply is within the specified range. The supplied standard AC power adapter should be only used indoor.
- Page 22 ADSL2+ Tester 3 Manipulation This instrument may be operated in environments within the following limits: Temperature: 0℃ ~ +40℃ Altitude: Up to 3050m (10,000 feet) Humidity: 5% ~ 90%, non-condensing Warning: This instrument is designed for Indoor use only. Do not operate the product in an explosive atmosphere or in the presence of flammable gasses or fumes.
- Page 23 ADSL2+ Tester 3 Manipulation Temperature: -20℃ ~ +70℃ Altitude: Up to 15,200 meters (50,000 feet) The instrument should also be protected from temperature extremes which could cause condensation within the instrument. 3.8.6 Repackaging Requirements • If the instrument is being returned to the factory for service, please complete a repair tag and attach it to the instrument.
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Page 24: Navigating The Displays
ADSL2+ Tester 4 Navigating the Displays 4. Navigating the Displays This chapter is intended to give you an overview of menu structure, four main menus and relative configurations and operations. Menu Structure “Settings” Menu “Results” Menu “Storages” Menu “Others” Menu 4.1 Menu Structure The operating menus of ADSL2+ Tester include “Settings”, “Results”, “Storages”... - Page 25 ADSL2+ Tester 4 Navigating the Displays analysis and statistics. In case page number appears in the menu, such as “P: 1/2”, then the page can be turned by pressing the “PgUp” or “PgDn” key. “Storages” menu Press the “Storage” key to switch to the storages menu. Press the “Cursor Moveable Right and Down”...
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Page 26: Settings" Menu
ADSL2+ Tester 4 Navigating the Displays Line Parameter Line BERT PING Main TRACE MODEM Simulator Settings Line Analysis Para Analysis Line Parameter Link Analysis Alarm Analysis Line BERT Results R-Time Analysis PING Stat. Analysis Route Analysis TRACE Storages Hop Stat. Rate Analysis MODEM Simulator Flux Analysis... - Page 27 ADSL2+ Tester 4 Navigating the Displays S ett in g s P : 1 / 2 1 0 :3 0 : 00 F unct ion [L IN E PA RAM ETER Li ne St a n d a r d AUTO ] C on ne ct in g……...
- Page 28 ADSL2+ Tester 4 Navigating the Displays Sett in g s P : 2 / 2 1 0 :3 0 : 00 Thr e sh old Se t up D ow n D at a Rat e OF F ]kb p s D ow n SNR M ar gin [ OF F] dB D ow n Ca p a c it y...
- Page 29 ADSL2+ Tester 4 Navigating the Displays Bit Error Ratio Test (BERT) on the ADSL line is usually used to make the evaluation on the transmission quality of ADSL signals. In Fig 4, press “F2” key to select “Line BERT” test mode and its displays is shown as Fig 7.
- Page 30 ADSL2+ Tester 4 Navigating the Displays “PING” testing includes LAN PIN G WAN PING . In these two testing modes, corresponding parameters should be set as described below in detail. 4.2.4 “LAN PING” settings menu After selecting “PIN G” test function, set the PING type as “LAN P IN G”.
- Page 31 ADSL2+ Tester 4 Navigating the Displays S ett in g s P : 2 / 2 1 0 :3 0 : 00 Writ in g C on f ig C onne c t in g …… YE S Fig 9: Page 2 of “LAN PING” setting menu 4.2.5 “WAN PING”...
- Page 32 ADSL2+ Tester 4 Navigating the Displays Caution: It is very important to be aware of the upper network protocol stack used by DSLAM. Only the right configurations of the protocol and other relative parameters can guarantee the successful login onto Internet. The authentication of this tester has been setted to "AUTO", which can find the authentication of DSLAM and match it automatically, including PAP, CHAP, MSCHAP.
- Page 33 ADSL2+ Tester 4 Navigating the Displays Item Option Description Password Authentication Protocol, PAP uses plaintext (unencrypted) passwords and is the least sophisticated authentication protocol. Authentication The Challenge Handshake Authentication Protocol (CHAP) negotiates a secure form of encrypted authentication by CHAP using Message Digest 5 (MD5), an industry- standard hashing scheme.
- Page 34 ADSL2+ Tester 4 Navigating the Displays Caution: Please contact your local ISP or IT for the correct VPI, VCI, Username and password. Only all these parameters in correct can guarantee the good connection with Internet. When viewing or inputting the username and password, you may press “F3” or “F4”...
- Page 35 ADSL2+ Tester 4 Navigating the Displays • Protocol Overview RFC1483 describes two different methods for carrying connectionless network inter- connect traffic over an ATM network: routed protocol data units (PDUs) and bridged PDUs. Bridged Ethernet over ATM (RFC 1483B) performs higher−layer protocol multiplexing implicitly by ATM virtual circuits.
- Page 36 ADSL2+ Tester 4 Navigating the Displays Press “PgDn” key to enter into Page 2. In Page 2, press “Cursor Moveable Right and Down” key to move the cursor to the positions of “VPI”, “VCI”, “Packet Length”, “Username”, “Password” and “Writing Config”. And then you can use “F1”, “F2”, “F3”...
- Page 37 ADSL2+ Tester 4 Navigating the Displays Config”. And then you can use “F1”, “F2”, “F3” and “F4” softkeys to choose the parameters. S ett in g s P : 1 / 2 1 0 :3 0 : 00 F un ct ion [ P ING ] [ WAN P ING ] D ST...
- Page 38 ADSL2+ Tester 4 Navigating the Displays The function in “TRACE” test mode is same as traceout command on PC. The settings menu of “TRACE” is shown in Fig 15. And please refer to the relative part of “PING” for the setting parameters. Sett in g s P : 1 / 2 1 0 :3 0 : 00...
- Page 39 ADSL2+ Tester 4 Navigating the Displays Caution: As the different protocol is selected, the corresponding settings will be displayed in Page 1 and Page 2 of “Modem Simulator” settings menu. Please refer Table 7 for the detailed information about the protocols. •...
- Page 40 ADSL2+ Tester 4 Navigating the Displays The specifications of DMM measurements are described in Table 11. Item Unit Range Resolution Accuracy 1.000 ～ 9.999 ±1%±0.05 0.001 -9.999 ～ -1.000 10.00 ～ 99.99 ±1%±0.5 0.01 -99.99 ～ 10.00 100.0 ～ 399.9 ±2%±1 -399.9 ～...
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Page 41: Results" Menu
ADSL2+ Tester 4 Navigating the Displays 4.3 “Results” Menu After completing all the settings, press “Start/Stop” key to begin the test and then press “Result” key to switch to “Results” menu. The corresponding results will be displayed on LCD according to the test function and configurations selected. Hereby we will introduce the results menus of “Line Parameter”, “Line BERT”, “PING”, “TRACE”, “MODEM Simulator”... - Page 42 ADSL2+ Tester 4 Navigating the Displays Re sult s 0 0D 0 0H 05M 0 3 S [L I N E AN A LY Lin e st a nd ar d AD SL2 + Lin k St ate SUC CESS R u n n i n g .
- Page 43 ADSL2+ Tester 4 Navigating the Displays To n e No [ ]：45 .94 dB [ESC ] （ d B） >> “ ” Fig 20 SNR Per Tone results menu Result Analysis Item Description Analysis Displays the actual bit rate. This is the actual bit Actual Bit Rates rate between the ATU-R and ATU-C when the fast or interleaved channel is used.
- Page 44 ADSL2+ Tester 4 Navigating the Displays To n e No [ ]： -28 .37 dB [ESC ] （ d B） >> “ ” Fig 21 Hlog Per Tone results menu Caution: The tester will auto-negotiate with DSLAM to use FAST or Interleaved channel. And only one channel can be used on a designated line.
- Page 45 ADSL2+ Tester 4 Navigating the Displays The results of “Alarm Analysis” are described in Table 15. Result Analysis Item Description Analysis Downstream rate transmit overflow According to the alarm threshold Alarm Downstream rate SNR Margin overflow Analysis set in “Settings” menu. Downstream rate CPTY overflow Table 15: “Alarm Analysis”...
- Page 46 ADSL2+ Tester 4 Navigating the Displays 4.3.3 “PING” results menu After “LAN PING” settings, connect the tester to the LAN, “LAN LINK/ACTIVE” LED is lit. Or, after “WAN PING” settings, connect the tester to the ADSL line, “WAN LINK” LED is lit.
- Page 47 ADSL2+ Tester 4 Navigating the Displays “Results” key to switch to the results menu. The results menu of “TRACE” is very similar to one of “PING”. The results menu includes two parts: “Route Analysis” and “Hops Statistics”, as shown in Fig 24. Re su lt s 0 0D 0 0H 0 5M 03 S R OU TE ANA L Y SIS...
- Page 48 ADSL2+ Tester 4 Navigating the Displays The results of “Modem Simulator” are described in Table 19. Rate Description Fulx Description The total upstream bytes UP BYTES UP RATE Current upstream rate. during the elapsed time. DOWN DOWN The total downstream bytes Current downstream rate.
- Page 49 ADSL2+ Tester 4 Navigating the Displays R e sult s DI STA N M e a su r e me n t M ETR IC ] Lin e D ia m et e r [0 . 4] m m Loop Re s ist a nc e >...
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Page 50: Storages" Menu
ADSL2+ Tester 4 Navigating the Displays The resistance and capacitance constants of the regular copper line are described in Table 21 and 22. Metric (mm) Ohm/mile Ohm/km 0.40 PE 0.405 26 PIC 0.50 PE 0.511 24 PIC 0.60 PE 0.644 22 PIC 0.90 PE 0.912... - Page 51 ADSL2+ Tester 4 Navigating the Displays automatically, the storage displays will no appear when the test is completed. In case of that, the user can also save the current result in the “Storages” menu later. • View, lock, unlock and delete the stored settings or results. Press the “Storage”...
- Page 52 ADSL2+ Tester 4 Navigating the Displays Item Description View View the settings information of the stored setting record. Recall Recall the stored setting as the current to set up a new test. Lock the selected stored setting in order to prevent it from being accidentally Lock renamed and delete.
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Page 53: Others" Menu
ADSL2+ Tester 4 Navigating the Displays Caution: When the result is chosen to be saved after the test is completed and there is no more saving capacity, user can exit the “Edit record’s name” menu first. At the same time, the result information will be saved in the “Current” result. Then delete the unvalued results to release the capacity and save the “Current”. - Page 54 ADSL2+ Tester 4 Navigating the Displays “Miscellaneous” menu is as shown in Fig 27. Move the cursor to the positions of “Beep on alarm”, “Keyboard lock” and “Storage” parameters to perform the selection, the relevant parameters are described in Table 24. Miscel- Option Description...
- Page 55 ADSL2+ Tester 4 Navigating the Displays Time & Date Option Description To run the new real-time clock after the modification of the date and time. Clock Mode To modify the date and time of the instrument. SETUP Year To select between 2000~2099. Date Month To select elect between 01~12.
- Page 56 ADSL2+ Tester 4 Navigating the Displays Caution: In the keyboard test, if no key stroked by user, then the instrument will keep waiting. When the correct key is stroked, the keys prompted under test will display “√” and the wrong keys will display “×” until all the process is completed.
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Page 57: Performing Measurements
ADSL2+ Tester 5 Performing Measurements 5. Performing Measurements This chapter is intended to help you in performing measurements with ADSL2+ Tester. We will introduce you the brief information about ADSL technology and how to use the tester to perform the measurements. Overview Basic Information Performing Measurements... - Page 58 ADSL2+ Tester 5 Performing Measurements b. ADSL Line Modulation There are three line code modulations in use: Discrete Multi-Tone (DMT), Carrierless Amplitude Phase Modulation (CAP), and Quadrature Amplitude Modulation (QAM). DMT is the official standard adopted by ANSI, ITU and ETSI. DMT are supported by more and more new ADSL modems since T1.413 adopts DMT as the national standard in USA.
- Page 59 ADSL2+ Tester 5 Performing Measurements non-stationary noise due to AM radio interference to get better coding gain from the Viterbi decoder. ADSL2 systems reduce framing overhead by providing a frame with a programmable number of overhead bits. Therefore, unlike the first-generation ADSL standards where the overhead bits per frame are fixed and consume 32 kbps of actual payload data, in the ADSL2 standard the overhead bits per frame can be programmed from 4 to 32 kbps.
- Page 60 ADSL2+ Tester 5 Performing Measurements Fig 33: ADSL2+ doubles the maximum data rate ADSL2+ also provides an optional mode that doubles the upstream bandwidth which will also provide a doubling of the upstream data rate. ADSL2+ can also be used to reduce crosstalk. ADSL2+ provides the capability to use only tones between 1.1 MHz and 2.2 MHz by masking the downstream frequencies below 1.1 MHz.
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Page 61: Performing Measurements
ADSL2+ Tester 5 Performing Measurements ADSL2+ can be used to correct this problem by using frequencies below 1.1 MHz from the central office, and frequencies between 1.1 MHz and 2.2 MHz from the remote terminal to the customer premise. This will eliminate most of the crosstalk between the services and preserve data rates on the line from the central office. - Page 62 ADSL2+ Tester 5 Performing Measurements a. Connection with Tester Connect the ADSL line interface of the tester with the line under test properly as shown in Fig 35. Consumer ADSL DSLAM ATU-C ATU-C Switch ATU-C DSLAM ADSL2+ Tester Fig 35: Connection in Line parameter, WAN PING and TRACE testing b.
- Page 63 ADSL2+ Tester 5 Performing Measurements TRACE will be more detailed than from PING. The results information contains all the IP address in the route and the time taken in the transmission. TRACE testing is more possible in connectivity analysis in the big networks. Refer to the relative descriptions about line parameter testing settings and results in Chapter 4 “Navigating the Displays”...
- Page 64 ADSL2+ Tester 5 Performing Measurements Refer to the relative descriptions about line parameter testing settings and results in Chapter 4 “Navigating the Displays” for detail. And simulating ADSL modem in PPPoE mode is hereby discussed for example. • Step 1: Connect the tester to ADSL line and link to ATU-C. •...
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Page 65: Working With Testmanagerpro
ADSL2+ Tester 6 Working with TestManagerPro 6. Working with TestManagerPro This chapter briefly describes the software functions, system configurations and running environment, install and uninstall the software on the PC and how to use TestManagerPro software. Software Functions System Configuration and Running Environment Install and Uninstall the Software on the PC How to Use TestManagerPro 6.1 Software Functions... -
Page 66: Install And Uninstall The Software On The Pc
ADSL2+ Tester 6 Working with TestManagerPro • Windows-compatible printer or plotter 6.2.2 Operating System • Windows ME/2000/NT/XP 6.2.3 System Configuration Recommendation • System display mode: 800x600 Pixels • Install the printer or plotter before setup 6.3 Install and Uninstall the Software on the PC 6.3.1 Installation Process •... - Page 67 ADSL2+ Tester 6 Working with TestManagerPro • Switch off the instrument. • Connect RS232 communication cable between the integrated RS232 port with the serial port of your PC. • Switch on the instrument and set RS232 “Port State” as “ON”. •...
- Page 68 ADSL2+ Tester 6 Working with TestManagerPro Start Double-click the icon of “TestManagerPro” to run the software. Enter into the main window of the program. Select the type of instrument Connect instrument Check if the connection is well done or if the serial port Successfully? of PC is damaged.
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Page 69: Troubleshooting
ADSL2+ Tester 7 Troubleshooting 7. Troubleshooting This chapter is intended to provide prompt help to operator on some frequently asked questions and the resolutions. 1) The instrument can not be powered on or has no displays. When “Low Battery” alarms, the tester will be shut down soon automatically. When the voltage of battery drops to a low level, the power circuit of the tester will be locked and cannot be opened until: Plug the AC power adapter into an appropriate AC wall outlet and power the tester... -
Page 70: Glossary
ADSL2+ Tester 8 Glossary 8. Glossary A ATM Adaptation Layer AAL5 AAL Type5 ADSL Asymmetric Digital Subscribe Line ANSI American National Standard Institution AS0~3(ASx) Asynchronous Transfer Mode ATU-C Transceiver Unit Centre Office ATU-R ADSL Transmission Unit at the customer premises end Carrierless Amplitude Phase Moderation CHAP Challenge Handshake Authentication Protocol... - Page 71 ADSL2+ Tester 8 Glossary Out of Cell Delineation Password Authentication Protocol POTS Plain Old Telephone Service Point-to-Point Protocol PPPoE Point-to-Point over Ethernet PPPoA Point-to-Point over ATM PSTN Public Switched Telephone Network Permanent Virtual Circuit Quadrate Amplitude Modulation Quality of Service RFC1483B RFC1483 Bridge RFC1483R...
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