VeEX MTT-14B User Manual Download Page 78

Page: 78 / 101

4 Reference

4.1 PING Technology

The name PING is derived from the SONAR world where one

pings an object in the water and listens for its echo. This con

cept applies to the Internet world, where one pings an address

and waits for its echo (reply). This verifies that the end device is

present and that the connection is active.

The PING message is an ICMP (Internet Control Message Pro-

tocol)  message. Both  devices  must   be  using   TCP/IP  protocol.
However, IP can  be  encapsulated onto  the  ADSL physical  layer
in several ways.  The  following  figure  provides a  summary of the

different implementation schemes for IP over ADSL.

Application

Software

Application

Software

Application

Software

TCP/IP

Application

Software

TCP/IP

PPP

RFC 2516

TCP/IP

802.3 Ethernet

PPP

802.3 Ethernet

RFC 1483

RFC 2364

RFC 1483

AAL5/ATM

ADSL

Classical IP over ATM

Ethernet over ATM

PPP over ATM

PPP over Ethernet

Figure 52 Encapsulation Technologies for IP over ADSL

MTT-14B e_Manual D07-00-083P RevA00

Page 78 of 101

Summary of Contents for MTT-14B

Page 1: ......

Page 2: ...mercare veexinc com Website www veexinc com EC Directive on Waste Electrical and Electronic Equipment WEEE The Waste Electrical and Electronic Equipment Directive aims to minimize the impact of the di...

Page 3: ...MTT 14B e_Manual D07 00 083P RevA00 Page 3 of 101...

Page 4: ...E Mode PING Results 23 2 2 4 4 Profile 24 2 2 5 Advanced Features 25 2 2 5 1 ATM Features 25 2 2 5 1 1 VCC Scan 25 2 2 5 1 2 OAM Cell Generation 29 2 2 5 1 3 OAM Cell Statistics 31 2 2 5 2 IP Features...

Page 5: ...opback Test 74 3 9 Nx64 kbit s Testing 75 4 Reference 77 4 1 PING Technology 77 4 1 1 Classical IP over ATM CLIPoA 78 4 1 2 Ethernet Frames over ATM EoA 78 4 1 3 PPP over Ethernet PPPoE over ATM 79 4...

Page 6: ...urn up read performance data and system loopbacks for troubleshooting 1 1 Connector Panel PAYLOAD STU Figure 1 Connector Panel The module panel contains PAYLOAD RJ 45 port for E1 testing STU RJ 45 por...

Page 7: ...p as STU C Blinking Red Indicates that the module is attempting to link up xTU R Green Indicates that the module is linked up as STU R Blinking Red Indicates that the module is attempting to link up L...

Page 8: ...G SETUP TEST 2 2 5 ADVANCED FEATURES 2 4 VIEW STORE PRINT 2 5 PROFILES 2 2 3 MODEM CONTROL 2 2 3 1 LOOPBACK CONTROL 2 2 3 2 SYSTEM SETTINGS 2 2 5 ADVANCED FEATURES 2 2 5 1 ATM FEATURES 2 2 5 2 IP FEAT...

Page 9: ...e connected to PL RATE Payload Rate Options AUTO F1 128K F2 192K F3 256K more F1 320K more F2 384K more F3 512K more F1 768K more F2 1024K more F3 1152K more F1 1280K more F2 1536K more F3 2048K more...

Page 10: ...SET RETRAIN Modem Status screens provide general performance information on the STU C and STU R For the far end data N A is displayed Note that CH2 status screen information is only available in 4 wir...

Page 11: ...eclared or 1 or more LOSW defects are declared 50 CRC errors during a 1 second interval is equivalent to a 30 error frame rate for a normal frame length Reset when ET is reset UNAVAILABLE SEC Count of...

Page 12: ...ast 3 consecutive received frames contain 1 or more errors An LOSW defect is cleared when at least 2 consecutive received frames contain no errors ATTN Triggered when the local attenuation value is gr...

Page 13: ...line to change to LOOP DN and the appropriate EOC message will be sent The STATUS line will report either SUCCESS or FAIL STU C C F2 Use this to loopback the STU C facing the cus tomer This will cause...

Page 14: ...en the ALARM LED will be on RECEIVE EOC SNR OFFSET For reporting via the EOC for STU C R only ON for far end sending SNR raw values to near end OFF for far end sending SNR margin values to near end OF...

Page 15: ...eric keypad If available use to move the cursor MODE Options PROFILE F1 LLC BRG F2 LLC RTE more F1 CLIPoA more F2 PPPoE more F1 PPPoA F2 more Select the protocol mode for the PING test PROFILE Use to...

Page 16: ...ion method for carrying traffic over AAL Type 5 over ATM LLC Logical Link Control based on IEEE standard 802 2 LLC encapsulation is used when multiple protocol are encapsu lated over a single ATM Virt...

Page 17: ...e module sends a request to the server the server responds and provides an IP address Upon selecting DYNAMIC the LOCAL IP line disappears the network dynamically assigns an IP address LOCAL IP Enter a...

Page 18: ...t Along with VCI VPI identifies the next destination of a cell as it moves through a series of ATM switches on the way to its destination The service provider typically assigns VPI VCI Range 1 to 6553...

Page 19: ...eives no response it will display PING FAIL This indicates that either the destination did not receive the PING message or it did not reply Press F4 to stop the test press it again to restart testing...

Page 20: ...30 55 LINK UP 4W STU R ST 12 30 10 ET 00 00 45 LOCAL IP 001 002 003 004 DEST IP 002 003 004 005 PING TEST DHCP PASS PING IN PROGRESS STOP Figure 11 DHCP IP Address Assigned 2 After receiving an IP ad...

Page 21: ...G START more Figure 13 PPPoA PING Setup Screen Configure these settings for PPPoA and PPPoE modes ENCAPSULATION Options LLC F1 VC MUX F2 AUTO F3 This refers to the Encapsulation method for carrying tr...

Page 22: ...h a series of ATM switches on the way to its destination The service provider typically assigns VPI VCI Range 0 through 65535 The default is 35 which is a typical Ethernet customer assign ment Along w...

Page 23: ...ion 1 Place the cursor on USER ID 2 Press EDIT F1 and a character screen is displayed 3 Press INPUT F3 to enter the character grid Notice a cursor appears in the grid and INPUT changes to STOP 4 Use t...

Page 24: ...the module has connected to the router broadband access server ISP The next step will be to verify authentication FAIL means that no connection to the ISP is available PPP PPP in progress means that t...

Page 25: ...e Repeat until finished If a mistake is made press STOP F3 use to select the incorrect character and then press DELETE F2 to delete the character INSERT F1 to add a character left of the selected char...

Page 26: ...resets and starts again Figure 16 VCC Scan Screen This feature is used to verify what PVC is active at the customer location Very often VCCs are directed toward the wrong desti nation and they create...

Page 27: ...eserved for future VP functions Any value 00000000 00000111 Reserved for future functions Any value 00000000 000SSSSS1 Reserved for future functions Any value 00000000 000TTTTT2 Segment OAM F5 cell An...

Page 28: ...000000 End to end OAM F5 cell Any value Any value other than 00000000 00000000 VC resource manage ment Any value Any value other than 0000000 00000000 0000000 00000110 Reserved for future VC functions...

Page 29: ...ell NNI VC resource management cell 111 Reserved for future VC functions after Rec I 361 Sec 2 2 4 and 2 3 3 Table 3 PTI Decode Values CLP Cell Loss Priority is one bit that may be set by the user or...

Page 30: ...default 0000 Enter a value using SHIFT and the numeric keypad Generic Flow Control assists in the control of the flow of traffic Used only for UNI interfaces It is primarily used to ease short term ov...

Page 31: ...of the OAM ATM PING Tx Number of OAM cells transmitted Note The following items will display N A unless loopback F4 or F5 cells are received Rx Number of OAM loopback cells received LOST Number of tra...

Page 32: ...not recorded while in ADVANCED FEATURES IP FEATURES menu Each time that an OAM request is received and answered the counters in the screen to the right get updated The test set will reply to F4 F5 seg...

Page 33: ...on the segment F4EEAIS AIS F4 path end to end F4EERDI RDI F4 path end to end F4EE_LP loopback request F4 path end to end F5EEAIS AIS F5 channel end to end F5EERDI RDI F5 channel end to end F5EE_LP loo...

Page 34: ...C to change any of the configuration items MODE Options PROFILE F1 LLC BRG F2 LLC RTE more F1 CLIPoA more F2 PPPoE more F1 PPPoA more F2 Select the protocol mode for the PING test PROFILE allows stori...

Page 35: ...VCI 35 DNS SERVER MANUAL DNS SERVER IP 206 13 28 12 USER ID PASSWORD 11 50 45 SHOWTIME 4W STU R CONFIGURATION MODE CLIPoA ENCAPSULATION LLC VPI 8 VCI 35 LOCAL IP 003 044 055 066 DNS SERVER MANUAL DNS...

Page 36: ...DHCP request to the server the server responds and provides an IP address Note that upon selecting DHCP the LOCAL IP setting disappears DYNAMIC Dynamic management provides a way for devices to obtain...

Page 37: ...rvice provider LOCAL IP not in DHCP or DYNAMIC IP Specify the IP address of the circuit to be tested GATEWAY LLC BRG only Specify the gateway address A gateway is a device that con nects dissimilar ne...

Page 38: ...UT F3 and a cursor appears in the grid 4 Use to move the cursor to the desired character Press ENTER to select that character The character will ap pear in the USER ID line 5 Continue selecting charac...

Page 39: ...Use to move that cursor to a desired character When it is selected press ENTER and the character will appear after PROFILE NAME If a mistake is made press F3 and use to select the incorrect character...

Page 40: ...ends a DHCP discovery mes sage to start DHCP negotiation with the ISP and obtain an IP address During this process the following is reported ST Start time indicates when CONNECT was pressed ET Elapsed...

Page 41: ...e IP STATUS screen LLC BRG Static IP Status 11 50 45 LINK UP UP ST 11 20 40 ET 000 30 05 IP STATUS ARP PASS LOCAL IP 192 168 102 106 GATEWAY 207 181 199 178 DNS SERVER 206 13 28 12 DETAIL Figure 23 AR...

Page 42: ...11 20 40 ET 000 30 05 IP STATUS ROUTER PASS PPP PASS LOCAL IP 207 181 199 105 GATEWAY 207 181 199 178 DNS SERVER 206 13 28 12 SUBNET MASK 255 255 255 000 AUTHENTICATION PAP 11 50 45 LINK UP UP ST 11...

Page 43: ...ncorrect protocol PPPoE DISCOVERY FAILED PPPoE only There is no response to the discovery messages sent by the STU R The reasons could be an incorrect VP VC or an incorrect protocol WRONG AUTHENTICATI...

Page 44: ...URL IP ADDR F2 LIST F3 Enter the Destination IP address GATEWAY Useto automatically PINGtheGateway IPaddress not available in LLC RTE and CLIPoA modes IP ADDR Use to enter a destination address Use S...

Page 45: ...lt is 1 Select the number of PINGS to send per second from Use SHIFT the number keypad and to enter a value When ready press F4 to begin Press again to stop The follow ing is reported PING result will...

Page 46: ...IP Options GATEWAY F1 URL IP ADDR F2 LIST F3 GATEWAY Useto automatically PINGtheGateway IPaddress not available in LLC RTE and CLIPoA modes IP ADDR Use to enter a destination address Use SHIFT the nu...

Page 47: ...reported Figure 27 Echo Response Screen ST Indicates when CONNECT was pressed in IP FEATURES CONFIGURATION ET Elapsed Time since CONNECT was pressed in IP FEATURES CONFIGURATION LOCAL IP If STATIC IP...

Page 48: ...AT F1 LOOP F2 TESTPAT Use for out of service bit error rate testing In this case a test pattern will be transmitted on the selected Transmit jack During Nx64K testing an idle code will be inserted on...

Page 49: ...04 05 06 07 08 09 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 TRANSMIT 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 AUTO SELECT UN SEL C...

Page 50: ...applying a low impedance termination CAUTION If uncertain select BRIDGE this will protect the 2 048 Mbit s signal TERM Terminate the received signal with a 75 or 120 im pedance termination The tested...

Page 51: ...d in kbps see Section 2 2 Notes for Payload and Line Rates CUR SNR MARGIN Current signal to noise margin in dB is the maximum dB increase in equalized noise or the maximum dB decrease in equalized sig...

Page 52: ...are excluded from unavailable time Reset when ET is reset LOSW SEC Loss of synchronization word second is a count of 1 second intervals during which one or more SHDSL LOSW defects are declared This p...

Page 53: ...re errors An LOSW defect is cleared when at least 2 consecutive received frames contain no errors ATTN Triggered when the local attenuation value is greater than the user threshold value This is set i...

Page 54: ...it becomes available only after 10 consecutive seconds without severe errors To continue the previous example if severe error injection is turned off and then 1 or 2 errors are inserted in the next 5...

Page 55: ...CODE RATE is the Average Bipolar Violation error rate since the start of the test CRC Count of the number of CRC 4 block errors since the start of the test N A is displayed when the test set is not s...

Page 56: ...played in decibels variance from DSX level dB MAX Hz MIN Hz Maximum and Minimum frequencies since the start of the test MFAL Multiframe Alarm seconds is a count of seconds that have had far end multif...

Page 57: ...errors See Section 2 3 3 1 for 08 39 57 Meas LINK UP STU C E1 ET 001 04 13 RT CONTINU FRM PCM 30 C TxCK L1 Rx PATT 2e15 RATE 2 048M E1 SUMMARY CODE N A RATE N A BIT 0 RATE 0 00E 09 CRC 0 RATE 0 00E 0...

Page 58: ...ISS 0 LOFS 0 FALM 0 MFAL 0 PAGE UP PAGE DN STOP MORE Figure 36 E1 Alarm Signal Screen E1 M 2100 550 Screen This screen provides pass fail measurements in accordance with ITU M 2100 550 This is used wh...

Page 59: ...urement 08 39 57 Meas LINK UP STU C E1 ET 001 04 13 RT CONTINU FRM PCM 30 C TxCK L1 Rx PATT 2e15 RATE 2 048M E1 G 826 EB 0 EB 0 00 BBE 0 BBE 0 00 ES 0 ES 0 00 SES 0 SES 0 00 UAS 0 UAS 0 00 EFS 3005 EF...

Page 60: ...ndards for consecutive zeros in AMI transmission 2e20 Industry standard 2e20 1 pseudo random bit sequence It is formed from a 20 stage shift register This pattern contains up to 19 zeros in a row and...

Page 61: ...04 52 AA B2 0A CA 04 F2 6A A2 4A 04 2A 12 A2 04 32 82 5A 9A 04 22 F2 E2 04 8C 4C CC 2C AC 6C EC 1C 9C 0C B0 50 QRSS Industry standard Quasi Random Signal is formed from a 20 stage shift register and...

Page 62: ...T and use the numeric keypad to enter the pattern Enter up to 24 bits Use INSERT F1 and DELETE F2 to make corrections 8 When finished press SHIFT followed by ENTER to store the pattern and to return t...

Page 63: ...error injection RATE Applies only to CODE and BIT errors Errors are injected at a constant rate Other types of errors may be inserted one at a time under BURST mode which injects a set number of erro...

Page 64: ...te 1 Select ERROR INJECTION 2 At TYPE press BIT F2 to select the error type 3 At MODE press RATE F2 4 At COUNT Press SHIFT and use the numeric keypad to press 1 The multiplier position shows 1 The cur...

Page 65: ...igure 41 View Store Print List Screen The following F keys are available VIEW F1 Allows viewing of a selected file See Section 2 4 2 SAVE F2 Select a blank line and press this key to save your results...

Page 66: ...the desired file with and press F3 and the file will begin printing 4 When finished press ESC 2 4 4 Deleting a Stored Test 1 From the module main menu select VIEW STORE PRINT 2 Select the desired fil...

Page 67: ...ss ENTER to place the desired character in the label Continue this process until the FILENAME label is complete You may enter up to 15 characters If a mistake is made in the entry A Press F3 to stop B...

Page 68: ...are as follows Note The DEFAULT file can t be deleted or unlocked DELETE LOCK more Figure 43 Profile List Screen The following F keys are available LOAD F1 Press to change all configuration settings...

Page 69: ...MTT 14B e_Manual D07 00 083P RevA00 Page 69 of 101...

Page 70: ...nk turn up utilizing proper G SHDSL line coding in 2 or 4 wire mode 3 2 STU R Emulation ISP Service Internet B RAS Router ATM DSLAM STU 2 or 4 wire G SHDSL STU R Figure 45 STU R Emulation Use STU R mo...

Page 71: ...Achieve synchronization with DSLAM Link measurement like rate noise margin and attenuation 3 4 STU C Emulation Customer CPE 2 or 4 wire G SHDSL STU STU C Figure 47 STU C Emulation This mode is used t...

Page 72: ...CK INTERN When finished press ENTER 3 Fromthemodule mainmenu selectTESTPATTERN andselect the desired test pattern When finished press ENTER 4 Connect the test set to the circuit as shown in Figure 48...

Page 73: ...toring Point access 3 Connect the test set to the circuit as shown in Figure 49 and press HISTORY to acknowledge any blinking LEDs 4 Examine the LEDs for information about the circuit SIGNAL should be...

Page 74: ...a tive purposes Verify that the span is not in service 3 From the module main menu select TEST CONFIGURATION and configure as follows MODE STUC E1 STUR E1 or E1 Tx SOURCE TESTPAT FRAMING As specified...

Page 75: ...s HISTORY to acknowledge any blinking LEDs 3 From the module main menu select MODEM CONTROL LOOPBACK CONTROL and press the F key that will loop up the far end device The STATUS line will indicate eith...

Page 76: ...ied by the circuit design CRC 4 As specified by the circuit design TESTRATE Nx64K thefractional SELECTTIMESLOTscreen is displayed Manually configure the timeslots or press AUTO If needed see Section 2...

Page 77: ...MTT 14B e_Manual D07 00 083P RevA00 Page 77 of 101...

Page 78: ...g TCP IP protocol However IP can be encapsulated onto the ADSL physical layer in several ways The following figure provides a summary of the different implementation schemes for IP over ADSL Applicati...

Page 79: ...tion 4 1 2 Ethernet Frames over ATM EoA In this case the Ethernet frames are encapsulated into the ATM Adaptation Layer 5 AAL5 using RFC 1483 The encapsulation supports both routing and bridged This i...

Page 80: ...sinesses PPPoE enables multiple PCs to connect to multiple destinations through a single shared CPE using one PVC This is based on the standard RFC 2516 PPP over Ethernet 4 1 4 PPP over ATM PPPoA PPPo...

Page 81: ...either the PAP or the CHAP authentication mechanisms The PPP session is opened with the Broadband Remote Access Server B RAS The LCP session is handled between the B RAS and the PC CPE to manage the a...

Page 82: ...ormance of a international connection ITU G 826 Error performance and transmission quality control ITU M 550 M 2100 Getting an international connection into service Q 140 Concerns redundant copies fro...

Page 83: ...amplitude of the analog sample to a companding characteristic This characteristic is a formula which translates the amplitudes of the samples into the 8 bit code words Internationally a companding cha...

Page 84: ...e far end equipment receives the E1 signal it examines the bit stream for these intentional bipolar code violations It then extracts the code and reconstruct the original data The HDB3 code substituti...

Page 85: ...for an E1 pulse with 75W im pedance is either 2 37 volts for a binary 1 value or 0 volts for a binary 0 value Real world values are typically 10 Ideally each pulse transmitted would be perfectly symme...

Page 86: ...ta can be placed as in Figure 61 Time Slot 0 One 2 048 Mbit s Frame 1 31 BITS 1 2 3 4 5 6 7 8 E 0 0 1 1 0 1 1 E 1 A Sa Sa Sa Sa Sa Notes Even Frame Contains FAS Odd Frame Contains NFAS Sa This bit is...

Page 87: ...time slot 16 4 signalling bits per channel 30 channels 8 signalling bits per frame timeslot 16 15 frames of timeslot 16 signalling Frame 0 TS 16 bits MFAS 0000 NMFAS XYXX where X is spare bits If thi...

Page 88: ...ligned with MFAS timeslot 16 multiframe SM FRM 2 Sub Multiframe 2 E E bit Errors c1 c2 c3 c4 CRC bits Figure 63 CRC 4 Multiframe Format A CRC 4 Cyclic Redundancy Check 4 is often used in E1 trans miss...

Page 89: ...d across the E1 span When the terminating equipment calculates an error using CRC 4 it should transmit an E bit to the far end thus informing the far end equipment of the error E bit Performance Monit...

Page 90: ...t With a complete circuit failure the test set will see either loss of signal alarm indication signal or remote alarm indication STU STU No Errors E Bit Error Trouble Point Test Set 1 Test Set 2 CRC E...

Page 91: ...MTT 14B e_Manual D07 00 083P RevA00 Page 91 of 101...

Page 92: ...table evidence of purchase within twenty 20 days of request by COMPANY freight prepaid B Software and Firmware Coverage COMPANY warrants soft ware media and firmware materials against defects in mater...

Page 93: ...REPEATED EFFORTS TO INSTALL EQUIPMENT IN GOOD WORKING ORDER OR TO REPAIR OR REPLACE EQUIPMENT SHALL IN NO EVENT EXCEED THE PURCHASE PRICE OR LICENSE FEE FOR THAT PRODUCT NOR SHALL COMPANY IN ANY EVENT...

Page 94: ...mulation 70 STU R Emulation ISP Service 69 STU R Emulation Private Network Service 70 V 54 Channel Loopback Test 74 C Calibration Statement 91 Connector Panel PAYLOAD and STU ports 5 D DHCP PING Passe...

Page 95: ...t s Data Rate 82 2 048 Mbit s Framing FAS or MFAS 85 Basic Definitions 81 Converting a Voice Signal 81 CRC 4 Error Checking in a MultiFrame Format 87 E bit Performance Monitoring 88 Line Coding AMI or...

Page 96: ...ration Screens 34 21 Profile Configuration Screens 38 22 DHCP IP Screens 39 23 ARP IP Screens 40 24 PPP IP Screens 41 25 PING Test Screen 43 26 Trace Route Screen 45 27 Echo Response Screen 46 28 STUx...

Page 97: ...hape 84 61 FAS Framing Format 85 62 MFAS Framing Format 86 63 CRC 4 Multiframe Format 87 64 In service E bit Performance Monitoring 89 I IP Configuration Screen AUTHENTICATION PAP CHAP AUTO or NONE 35...

Page 98: ...s 27 O OAM Cell Generation Screen CELL 30 LOST 30 Rx 30 Tx 30 CLP 29 GFC 29 ROUNDTRIP ms CUR AVG MAX and MIN 30 TIMEOUT 30 TYPE F4SGAIS F4SGRDI F4SG_LP F4EEAIS F4EERDI F4EE_ LP F5SGAIS F5SGRDI F5SG_LP...

Page 99: ...hnology 77 Classical IP over ATM CLIPoA 78 Ethernet Frames over ATM EoA 78 PING Acronyms 80 PPP over ATM PPPoA 79 PPP over Ethernet PPPoE over ATM 79 PING Test Screen 43 PPPoA and PPPoE Mode PING Resu...

Page 100: ...OP 47 STUx E1 Modem Status Screens ATTENUATION 50 CRC ERRORS 50 CUR SNR MARGIN 50 ET 50 LINE RATE 50 LOSW SEC 51 MAX SNR MARGIN 50 MIN SNR MARGIN 50 PAYLOAD RATE 50 SEVERE ERR SEC 50 UNAVAILABLE SEC 5...

Page 101: ...and VCI Values 26 V VCC Scan Screen CLP 28 ET 25 PTI 27 ST 25 VCI 25 VPI 25 View Print Results Deleting a Stored Test 65 Locking and Unlocking a Stored Test 65 Printing a Stored Test 65 Renaming a St...

Search results

Summary of Contents for MTT-14B

Reviews:

Related manuals for MTT-14B

Brands by name

Popular brands

VeEX MTT-14B, User Manual

Search results

Summary of Contents for MTT-14B

Reviews:

Related manuals for MTT-14B

Brands by name

Popular brands