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VeEX MTT-14B User Manual

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  • Page 2 MTT-14B e_Manual D07-00-083P RevA00 Page 2 of 101 WARNING Using the supplied equipment in a manner not specified by VeEX Inc. may impair the protection provided by the equipment. CAUTIONS! • Do not remove or insert the module while the test set is on. Inserting or removing a module with the power on may damage the module.
  • Page 3 MTT-14B e_Manual D07-00-083P RevA00 Page 3 of 101...

  • Page 4: Table Of Contents

    MTT-14B e_Manual D07-00-083P RevA00 Page 4 of 101 1 SHDSL Module ..............5 1.1 Connector Panel..............5 1.2 LEDs ..................6 2 SHDSL Menus ..............7 2.1 Test Configuration .............8 2.2 STU-C and STU-R Configuration ........8 2.2.1 Modem Status ..............9 2.2.2 Alarm Status ..............11 2.2.3 Modem Control ............12...
  • Page 5 MTT-14B e_Manual D07-00-083P RevA00 Page 5 of 101 2.4.3 Printing a Stored Test ...........65 2.4.4 Deleting a Stored Test ..........65 Locking and Unlocking a Stored Test ......65 2.4.5 2.4.6 Renaming a Stored Test ..........65 2.5 Profiles................67 3 Applications ..............69 3.1 Loop Prequalification ............69 3.2 STU-R Emulation-ISP Service.........69...

  • Page 6: Shdsl Module

    MTT-14B e_Manual D07-00-083P RevA00 Page 6 of 101 The SHDSL module provides SHDSL modem emulation. Modem emulation includes STU-R, STU-C, STUC E1, STUR E1, and E1 emulation to verify link turn-up, read performance data, and system loopbacks for troubleshooting. 1.1 Connector Panel...

  • Page 7: Leds

    MTT-14B e_Manual D07-00-083P RevA00 Page 7 of 101 1.2 LEDs SSMTT-ACM, -ACM+, -EX SSMTT-B, -C Figure 2 Test Set LED Panels The module uses the following test set LEDs: MODULE • Green: Indicates that the test set is using the module.

  • Page 8: Shdsl Menus

    MTT-14B e_Manual D07-00-083P RevA00 Page 8 of 101 2 SHDSL Menus The following figure shows the location of major menu items. MODULE MAIN MENU TEST CONFIGURATION STU-C or STU-R 2.3 STUC E1 or STUR E1 TEST CONFIGURATION TEST CONFIGURATION TEST CONFIGURATION 2.3.1...

  • Page 9: Test Configuration

    MTT-14B e_Manual D07-00-083P RevA00 Page 9 of 101 2.1 Test Configuration MODE determines the displayed configuration screen: MODE Options: STU-C (F1), STU-R (F2), STUC E1 (F3), STUR E1 (more, F1), E1 (more, F2) Select the proper operating mode for the circuit to be tested.

  • Page 10: Modem Status

    MTT-14B e_Manual D07-00-083P RevA00 Page 10 of 101 • For single ended applications, i.e., STU-R emulation testing with a DSLAM, use a fixed rate that matches the expected commercial service rate. STANDARD (per ITU G.991.2) Options: ANNEX-A (F1), ANNEX-B (F2) Select an operating standard.

  • Page 11: Losw Sec

    MTT-14B e_Manual D07-00-083P RevA00 Page 11 of 101 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 signal that a system can tolerate and maintain a BER of 10 ATTENUATION: This displays the loop attenuation (in dB).

  • Page 12: Alarm Status

    MTT-14B e_Manual D07-00-083P RevA00 Page 12 of 101 2.2.2 Alarm Status This screen provides 08:39:57 general alarm status >LINK UP 4W STU-R< (current and history for ALARM STATUS local and remote). LOCAL REMOTE Note CH2 is reported curr hist curr hist only in 4-wire mode.

  • Page 13: Modem Control

    MTT-14B e_Manual D07-00-083P RevA00 Page 13 of 101 2.2.3 Modem Control This menu contains the following: • LOOPBACK CONTROL • SYSTEM SETTINGS 2.2.3.1 SHDSL System Loopback Control 08:39:57 >LINK UP 4W STU-R< SHDSL SYSTEM LOOPBACK STU-C STU-R COMMAND : STATUS...

  • Page 14: System Settings

    MTT-14B e_Manual D07-00-083P RevA00 Page 14 of 101 2.2.3.2 System Settings Use this screen to adjust the defaults for: DISPLAY ALL EOC MESSAGES • ON: will display far end values for CRC, SES, ES, UAS, and LOSW (if available). At this time, the module does not support this mode.

  • Page 15: Ping Setup/Test

    MTT-14B e_Manual D07-00-083P RevA00 Page 15 of 101 2.2.4 PING Setup/Test Link turn-up verifies connectivity to a DSLAM. PING testing takes the turn-up procedure one step further and verifies connectivity to the far end network. PING is a common method to discover whether two remote LAN segments using TCP-IP protocol are connected.

  • Page 16: Llc-Bridge And Routed Mode Setup

    MTT-14B e_Manual D07-00-083P RevA00 Page 16 of 101 2.2.4.1 LLC-Bridge and Routed Mode Setup 11:50:50 >LINK UP 4W STU-R< PING SETUP MODE :LLC-BRG ENCAPSULATION :LLC IP ADDRESS :STATIC LOCAL IP :207.181.199.178 DESTINATION IP:207.181.199.177 GATEWAY :207.181.199.177 START more PROFILE LLC-BRG LLC-RTE CLIPoA...
  • Page 17 MTT-14B e_Manual D07-00-083P RevA00 Page 17 of 101 Range: 0 through 65535 The default is 35, which is a typical Ethernet assignment. Along with VPI, VCI identifies the next destination of a cell as it moves through a series of ATM switches on the way to its destination.

  • Page 18: Clipoa Setup

    MTT-14B e_Manual D07-00-083P RevA00 Page 18 of 101 2.2.4.2 CLIPoA Setup 11:50:50 >LINK UP 4W STU-R< PING SETUP MODE :CLIPoA ENCAPSULATION :LLC IP ADDRESS :207.181.199.176 LOCAL IP :207.181.199.178 START more LLC-RTE CLIPoA Figure 9 CLIPoA Configuration Screen Configure theses settings for Classical IP over ATM:...

  • Page 19: Llc-Brg, Llc-Rte, And Clip Mode Ping Results18

    MTT-14B e_Manual D07-00-083P RevA00 Page 19 of 101 2.2.4.2.1 LLC-BRG, LLC-RTE, and CLIP Mode PING Results After configuring, press F3 to start the test. As the test proceeds, the test set displays an ‘IN PROGRESS’ message. • The module will send 10 PINGs at one-second intervals. One or more responses from the destination is considered a pass.

  • Page 20: Dhcp: Ping Passed

    MTT-14B e_Manual D07-00-083P RevA00 Page 20 of 101 If selecting LLC-BRG, DHCP IP ADDRESS, the PING results screen differs slightly from Figure 10. For DHCP, the network must assign the local IP address. There are two steps for the results: 1.

  • Page 21: Pppoa And Pppoe Mode Setup

    MTT-14B e_Manual D07-00-083P RevA00 Page 21 of 101 2.2.4.3 PPPoA and PPPoE Mode Setup PPP (Point-to-Point Protocol) allows one or more user sessions to tunnel across the link. This includes provisions for security and protocol negotiations. The module supports two versions of PPP: PPPoE (PPP over Ethernet) and PPPoA (PPP over ATM).
  • Page 22 MTT-14B e_Manual D07-00-083P RevA00 Page 22 of 101 • PAP: Password Authentication Protocol as defined in RFC 1334. PAP is the simplest method for authentication. It involves a two-way handshake where one peer sends a user name and ID to another peer element in the network. The second peer returns an authentication-acknowledge message either accepting or rejecting the user name and password.

  • Page 23: Entering A User Id/Password

    MTT-14B e_Manual D07-00-083P RevA00 Page 23 of 101 LOCAL IP Enter a local IP address of the circuit under test. For LLC-BRG and LLC-RTE STATIC, this is the local IP address used. For LLC-BRG DYNAMIC mode, there is no LOCAL IP mode since a dynamically assigned local IP address is used.

  • Page 24: Pppoa And Pppoe Mode Ping Results

    MTT-14B e_Manual D07-00-083P RevA00 Page 24 of 101 2.2.4.3.2 PPPoA and PPPoE Mode PING Results After configuring, press F3 to start the test. As the test proceeds, the test set displays an ‘IN PROGRESS’ message. For PPP PING results there are three stages to the test: •...

  • Page 25: Profile

    MTT-14B e_Manual D07-00-083P RevA00 Page 25 of 101 2.2.4.4 Profile The PING setup screens feature a 12:30:55 >LINK UP 4W STU-R< PROFILE (F1) key. This allows saving and retrieving various PROFILE NAME MODE :LLC-BRG configurations. To save a ENCAPSULATION :LLC configuration, use this procedure: 1.

  • Page 26: Advanced Features

    MTT-14B e_Manual D07-00-083P RevA00 Page 26 of 101 2.2.5 Advanced Features This menu screen contains the following optional features: • ATM FEATURES • IP FEATURES 2.2.5.1 ATM Features This menu screen contains: • VCC SCAN • OAM CELL GENERATION • OAM CELL STATISTICS 2.2.5.1.1 VCC Scan...

  • Page 27: Uni Vpi And Vci Values

    MTT-14B e_Manual D07-00-083P RevA00 Page 27 of 101 Unassigned cell 00000000 00000000 00000000 Invalid Any value other than 0 00000000 00000000 Meta-signaling XXXXXXXX 00000000 00000001 XXXXXXXX 00000000 00000010 General broadcast Point-to-Point signal- XXXXXXXX 00000000 00000101 Segment OAM F4 cell Any value...

  • Page 28: Nni Vpi And Vci Values

    MTT-14B e_Manual D07-00-083P RevA00 Page 28 of 101 Unassigned cell 00000000 00000000 00000000 Invalid Any value other than 0 00000000 00000000 NNI signaling Any value 00000000 00000101 Segment OAM F4 cell Any value 00000000 00000011 End-to-end OAM F4 Any value...

  • Page 29: Pti Decode Values

    MTT-14B e_Manual D07-00-083P RevA00 Page 29 of 101 PTI Coding Interpretation Bits 432 User data cell, congestion not experienced. ATM user-to-user indication = 0 User data cell, congestion not experienced. ATM user-to-user indication = 1 User data cell, congestion experienced.

  • Page 30: Oam Cell Generation

    MTT-14B e_Manual D07-00-083P RevA00 Page 30 of 101 2.2.5.1.2 OAM Cell Generation This screen contains configura- 12:03:43 >LINK UP 2W STU-R< tion items for OAM cell genera- tion. OAM CELL GENERATION OAM TRANSMIT OAM RECEIVE # Tx # Rx :0000...
  • Page 31 MTT-14B e_Manual D07-00-083P RevA00 Page 31 of 101 #CELL Options: 1–9999 Enter the number of OAM cells to transmit by using SHIFT and the number keypad. TIMEOUT Options: 1–10 seconds Enter a value in seconds by using SHIFT and the number keypad.

  • Page 32: Oam Cell Statistics

    MTT-14B e_Manual D07-00-083P RevA00 Page 32 of 101 2.2.5.1.3 OAM Cell Statistics B-RAS can ATM switches DSLAM send OAM can send OAM can send cells. cells. OAM cells. B-RAS Internet DSLAM Router Testset replies to OAM cells, if required (i.e. loop)

  • Page 33: F5Ee_Lp

    MTT-14B e_Manual D07-00-083P RevA00 Page 33 of 101 VPI: Indicates the Virtual Path Identifier; 000–999 VCI: Indicates the Virtual Channel Identifier; 00000–65535 OAM: The following Operations Administration Messages: F4SGAIS: AIS F4 (path) on the segment F4SGRDI: RDI F4 (path) on the segment...

  • Page 34: Ip Features

    MTT-14B e_Manual D07-00-083P RevA00 Page 34 of 101 2.2.5.2 IP Features These optional features provide advanced Internet connectivity troubleshooting through detailed connection status, PING statis- tics, and trace route. The menu screen contains the following: • CONFIGURATION • IP STATUS •...

  • Page 35: Dns Server

    MTT-14B e_Manual D07-00-083P RevA00 Page 35 of 101 11:50:45 11:50:45 >SHOWTIME < >SHOWTIME < > 4W STU-R< > 4W STU-R< CONFIGURATION CONFIGURATION MODE :LLC-BRG MODE :LLC-BRG ENCAPSULATION :AUTO ENCAPSULATION :AUTO IP TYPE :STATIC IP TYPE :DHCP LOCAL IP :102.168.102.101 GATEWAY :255.255.255.0...
  • Page 36 MTT-14B e_Manual D07-00-083P RevA00 Page 36 of 101 ENCAPSULATION Options: LLC (F1), VC MUX (F2), AUTO (F3) Choose the encapsulation method for carrying traffic over AAL Type 5 over ATM as described in RFC 2684. • LLC: Logical Link Control based on IEEE standard 802.2. It is used when multiple protocols are encapsulated over a single ATM virtual connection.
  • Page 37 MTT-14B e_Manual D07-00-083P RevA00 Page 37 of 101 • CHAP: Challenge Handshake Authentication Protocol as in RFC 1994. It involves a three-way handshake. In this, the test set sends a challenge containing its user name. The server sends a response with a specific identifier expected for this transac- tion.
  • Page 38 MTT-14B e_Manual D07-00-083P RevA00 Page 38 of 101 USER ID (not in LLC-BRG, LLC-RTE, or CLIPoA modes) For authentication (PAP and CHAP), enter a user ID prior to re- ceiving an IP address from the ISP. See the following subsection entitled Entering a User ID/Password.

  • Page 39: Profile Setup

    MTT-14B e_Manual D07-00-083P RevA00 Page 39 of 101 Profile Setup 11:50:45 11:50:45 >LINK UP < >LINK UP < PROFILE NAME PROFILE NAME MODE :LLC-BRG MODE :LLC-BRG ENCAPSULATION :AUTO ENCAPSULATION :AUTO IP TYPE :DHCP IP TYPE :STATIC LOCAL IP DNS SERVER...

  • Page 40: Ip Status

    MTT-14B e_Manual D07-00-083P RevA00 Page 40 of 101 2.2.5.2.2 IP Status These screens are displayed after pressing CONNECT in IP CONFIGURATION (except LLC-RTE and CLIPoA). They report im- portant information on the status of the connection to the ISP. • LLC-RTE and CLIPoA: ‘UP’ is displayed when the link is up.
  • Page 41 MTT-14B e_Manual D07-00-083P RevA00 Page 41 of 101 • DHCP SERVER: DHCP server IP address. If this reports FAIL, then the ISP did not return a DNS server IP address or it was invalid. • GATEWAY: Gateway IP address. • SUBNET MASK: Netmask.
  • Page 42 MTT-14B e_Manual D07-00-083P RevA00 Page 42 of 101 • LINK DOWN: Link is closed. • WRONG CONFIGURATION: Wrong VP/VC, protocol, local address or gateway IP address. If ARP: PASS, the following is reported: • LOCAL IP: STU-R IP address assigned by the DHCP server.
  • Page 43 MTT-14B e_Manual D07-00-083P RevA00 Page 43 of 101 ROUTER: FAIL: The ISP has not responded or the negotiation of the connection parameters has failed. PPP: in progress: Connection is not yet opened. PPP: PASS: The authentication and IP parameters of the con- nection have been successfully negotiated and the connection is UP.

  • Page 44: Ping Test

    MTT-14B e_Manual D07-00-083P RevA00 Page 44 of 101 2.2.5.2.3 PING Test Before running this test, the 11:50:45 >LINK UP UP< connection must be UP as indicated at the top right of the ST:--:--:-- ET:---:--:-- LOCAL IP:207.181.199.106 screen. PING TEST DESTINATION IP:207.181.199.178...
  • Page 45 MTT-14B e_Manual D07-00-083P RevA00 Page 45 of 101 Press ENTER to select that character. The character will ap- pear in the URL line. Repeat this until done then press STOP (F3) to exit the character grid. • If a mistake is made, press STOP (F3) and use to select the incorrect character.

  • Page 46: Trace Route

    MTT-14B e_Manual D07-00-083P RevA00 Page 46 of 101 2.2.5.2.4 Trace Route Before running the test, UP must 11:50:45 >LINK UP UP< be displayed as indicated at the top right of the screen. ST:11:50:00 ET:00:00:45 LOCAL IP:38.168.47.121 Use this screen to send PING TRACE ROUTE DESTINATION IP:209.130.

  • Page 47: Echo Response

    MTT-14B e_Manual D07-00-083P RevA00 Page 47 of 101 2.2.5.2.5 Echo Response Before running the test, UP must 11:50:45 >LINK UP UP< be displayed as indicated at the top right of the screen. ST:11:50:00 ET:00:00:45 LOCAL IP:38.168.47.121 ECHO RESPONSE This screen runs in the back- # OF ECHOED IPS: 1 ground, updating continuously.

  • Page 48: Stuc E1, Stur E1, And E1 Configuration

    MTT-14B e_Manual D07-00-083P RevA00 Page 48 of 101 2.3 STUC E1, STUR E1, and E1 Configuration 08:39:57 08:39:57 >LINK DN- Idle STU-C E1< >LINK DN- Idle STU-R E1< TEST CONFIGURATION TEST CONFIGURATION MODE STUC-E1 MODE STUR-E1 TX SOURCE : TESTPAT...

  • Page 49: Select Time Slot Screen

    MTT-14B e_Manual D07-00-083P RevA00 Page 49 of 101 • If the framing and CRC-4 state of the received signal do not match the framing and CRC-4 settings, the test set will display Loss of Frame condition and may display loss of CRC DET.
  • Page 50 MTT-14B e_Manual D07-00-083P RevA00 Page 50 of 101 1-15, and time slots 17-31 correspond to channels 16-30. In PCM-30, time slot 16 is used for the multiframe alignment sig- nal. Fractional E1 is not offered with unframed signals, because framing is required to determine the location of time slots.

  • Page 51: Modem Status

    MTT-14B e_Manual D07-00-083P RevA00 Page 51 of 101 2.3.1 Modem Status Use these screens to view realtime link parameters. Press to view the available screens 08:39:57 08:39:57 >LINK UP STU-C E1< >LINK UP STU-C E1< MODEM STATUS MODEM STATUS ET: 000:05:54...

  • Page 52: Unavailable Sec

    MTT-14B e_Manual D07-00-083P RevA00 Page 52 of 101 UNAVAILABLE SEC: Count of 1 second intervals for which the SHDSL line is unavailable. The SHDSL line becomes unavailable at the onset of 10 contiguous SESs. The 10 SESs are included in the unavailable time.

  • Page 53: Alarm Status

    MTT-14B e_Manual D07-00-083P RevA00 Page 53 of 101 2.3.2 Alarm Status This screen provides 08:39:57 general alarm status >LINK UP STU-C E1< (current and history for ALARM STATUS local and remote). The LOCAL REMOTE following is reported: curr hist curr...

  • Page 54: E1 Measurement

    MTT-14B e_Manual D07-00-083P RevA00 Page 54 of 101 2.3.3 E1 Measurement The test set continuously performs measurements on a received signal. While a measurement is being made, “Meas” is displayed. When stopped, the indicator is no longer displayed. Results are compiled while in any E1 mode. Measurements are automatically restarted anytime the configuration is changed.

  • Page 55: Measurement Definitions

    MTT-14B e_Manual D07-00-083P RevA00 Page 55 of 101 2.3.3.1 Measurement Definitions The following measurements are displayed within the results screens. The definitions are listed in alphabetical order. Each measurement is proprietary to its screen; i.e., ‘error’ refers to E-Bit errors in the E-BIT screen, and to all Summary errors in the SUMMARY screen.
  • Page 56 MTT-14B e_Manual D07-00-083P RevA00 Page 56 of 101 FALM: Frame Alarm seconds is a count of seconds that have had far end frame alarm (FAS Remote Alarm Indication, RAI) since the start of the test. FE: Count of the number of Frame bit Errors since the start of the test.

  • Page 57: E1 Measurement Screens

    MTT-14B e_Manual D07-00-083P RevA00 Page 57 of 101 2.3.3.2 E1 Measurement Screens These screens are available for STUC E1, STUR E1, and E1 configurations. E1 Status Screen This screen displays the status 08:39:57 Meas >LINK UP STU-C E1< of the E1 Line. In large type, a...

  • Page 58: E1 G.821 Screen

    MTT-14B e_Manual D07-00-083P RevA00 Page 58 of 101 E1 G.821 Screen This screen presents the mea- 08:39:57 Meas >LINK UP STU-C E1< surement parameters specified : 001:04:13 RT : CONTINU in ITU G.821. See Section FRM : PCM-30/C TxCK: L1-Rx PATT: 2e15 RATE: 2.048M...

  • Page 59: E1 G.826 Screen

    MTT-14B e_Manual D07-00-083P RevA00 Page 59 of 101 P/F: Indicates whether the test result Passed or Failed. %ES: Percentage of M.2100 Errored Seconds since the start of the test. An errored second is any second with a Code, Bit, Frame, Multiframe or CRC errors.

  • Page 60: Test Pattern

    MTT-14B e_Manual D07-00-083P RevA00 Page 60 of 101 2.3.4 Test Pattern To transmit one of the standard patterns: 1. In the screen on the right, 08:39:57 Meas >LINK UP STU-C E1< to select a TEST PATTERN desired pattern. As a pattern...
  • Page 61 MTT-14B e_Manual D07-00-083P RevA00 Page 61 of 101 0000: Industry-standard all zeros pattern. It is often used to make sure that clear-channel lines have been properly provisioned for B8ZS during circuit turn-up. If a portion of the circuit is AMI, then pattern synch and/or signal will be lost.

  • Page 62: Custom Patterns

    MTT-14B e_Manual D07-00-083P RevA00 Page 62 of 101 2.3.4.1 Custom Patterns In addition to the standard patterns, a pattern can be created. Creating a Pattern 1. In the TEST PATTERN screen, press USER (F1). 2. Select a blank position on the list and press CREATE (F1).

  • Page 63: Error Injection

    MTT-14B e_Manual D07-00-083P RevA00 Page 63 of 101 2.3.5 Error Injection To start error injection, press 08:39:57 Meas >LINK UP STU-C E1< ERR INJ. The test set will insert ERROR INJECTION errors as specified in the screen TYPE : CODE to the right.
  • Page 64 MTT-14B e_Manual D07-00-083P RevA00 Page 64 of 101 Programming a Burst of 10 Errors 1. Select ERROR INJECTION. 2. At TYPE, press CODE (F1) to select the error type. 3. At MODE, press BURST (F1). 4. At COUNT. Press SHIFT and enter 10 using the numeric keypad.

  • Page 65: View/Store/Print

    MTT-14B e_Manual D07-00-083P RevA00 Page 65 of 101 2.4 View/Store/Print Use this screen to store different results to view or print at a later time. To store results, use the procedure in Section 2.4.1. 11:50:45 VIEW/STORE/PRINT Free space: 9048 Kbyte...

  • Page 66: Saving A Test

    MTT-14B e_Manual D07-00-083P RevA00 Page 66 of 101 2.4.1 Saving a Test 1. From any screen with a STORE F-key, press it and the test is saved with a generic filename as a CSV file that can be opened with most spreadsheet programs. These files are stored in the MMC card under RESULT >...

  • Page 67: View/Store/Print

    MTT-14B e_Manual D07-00-083P RevA00 Page 67 of 101 11:50:45 VIEW/STORE/PRINT FILENAME: 4WBE0001 A a B b C c D d E e F f G g H h I i J j K k L l M m N n O o P p Q q R r...

  • Page 68: Profiles

    MTT-14B e_Manual D07-00-083P RevA00 Page 68 of 101 2.5 Profiles Use the Profile function to store commonly used module con- figuration settings. The following screen contains a DEFAULT profile. This profile is based on the factory standard configuration of this module. To create other profiles, change the configuration settings in any available screens.
  • Page 69 MTT-14B e_Manual D07-00-083P RevA00 Page 69 of 101...

  • Page 70: Applications

    MTT-14B e_Manual D07-00-083P RevA00 Page 70 of 101 3 Applications 3.1 Loop Prequalification Central Office Customer Premises 2 or 4 Wire G.SHDSL STU-C STU-R Figure 44 Dual-ended Modem Emulation Use this dual-ended test during the prequalification phase, be- fore the DSLAM is setup and running in a particular location. It is also used by contract groups who need to prequalify circuits, but do not have direct access to the DSLAM.

  • Page 71: Stu-R Emulation-Private Network Service

    MTT-14B e_Manual D07-00-083P RevA00 Page 71 of 101 3.3 STU-R Emulation-Private Network Service 2 or 4-wire DSLAM G.SHDSL STU-R Figure 46 STU-R Emulation-Private Network Service Common applications in this mode include: • Achieve synchronization with DSLAM. • Link measurement like rate, noise margin, and attenuation.

  • Page 72: Accept A New E1 Circuit

    MTT-14B e_Manual D07-00-083P RevA00 Page 72 of 101 3.5 Accept a New E1 Circuit Customer Premises Loopback Device Exchange Figure 48 Accept a New E1 Span 1. Verify that the span is not in service. This acceptance test will disrupt service. There must be a loopback device at the far end.

  • Page 73: In-Service E1 Circuit Monitoring

    MTT-14B e_Manual D07-00-083P RevA00 Page 73 of 101 3.6 In-Service E1 Circuit Monitoring Monitor Mode Bridge Mode Figure 49 In-Service E1 Circuit Monitoring 1. This test may be performed while the span is in-service. 2. From the module main menu, select TEST CONFIGURATION...

  • Page 74: Measuring E1 Signal Level

    MTT-14B e_Manual D07-00-083P RevA00 Page 74 of 101 3.7 Measuring E1 Signal Level Figure 50 Measuring E1 Signal Level A signal level measurement can be performed by itself or in conjunction with one of the other tests. 1. Select the Rx PORT level to use. The measurement can be performed using TERM, MONITOR, or BRIDGE.

  • Page 75: Channel Loopback Test

    MTT-14B e_Manual D07-00-083P RevA00 Page 75 of 101 3.8 V.54 Channel Loopback Test 1. From the module main menu, select TEST CONFIGURATION and configure as follows: MODE: STUC E1, STUR E1, or E1 Tx SOURCE: TESTPAT TEST RATE: Nx64/2.048M (as required) When finished, press ENTER.

  • Page 76: Nx64 Kbit/S Testing

    MTT-14B e_Manual D07-00-083P RevA00 Page 76 of 101 3.9 Nx64 kbit/s Testing Fractional E1 circuits are circuits of data rate Nx64 kbit/s, where N can be anywhere from 1 to 31 channels. N channels of the E1 line are dedicated to the fractional E1 circuit, and the remaining channels of the E1 line are either filled with an idle code, other revenue traffic or framing information.
  • Page 77 MTT-14B e_Manual D07-00-083P RevA00 Page 77 of 101...

  • Page 78: Reference

    MTT-14B e_Manual D07-00-083P RevA00 Page 78 of 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).

  • Page 79: Classical Ip Over Atm (Clipoa)

    MTT-14B e_Manual D07-00-083P RevA00 Page 79 of 101 4.1.1 Classical IP over ATM (CLIPoA) ATM-VC ATU-R 25.6 ADSL DSLAM AAL5 AAL5 ATM25 ADSL OC-3 Figure 53 Classical IP over ATM Classical IP over ATM is an IETF protocol which uses ATM’s high speed ability in the Local Area Network.

  • Page 80: Ppp Over Ethernet (Pppoe) Over Atm

    MTT-14B e_Manual D07-00-083P RevA00 Page 80 of 101 4.1.3 PPP over Ethernet (PPPoE) over ATM ATM-VC B-RAS ATU-R IP Routing DSLAM 2516 802.3 2516 802.3 1483 802.3 1483 AAL5 2516 AAL5 WAN Media 802.3 ADSL ADSL OC-3 OC-3 LAN Media...

  • Page 81: Ping Acronyms

    MTT-14B e_Manual D07-00-083P RevA00 Page 81 of 101 For PPP (PPPoE and PPPoA), IP address management will most likely be dynamic. However, static IP address management can ex- ist. PPPoA has the following implementations of IP management: • Static IP address management over PPP.

  • Page 82: E1 Technology Overview

    MTT-14B e_Manual D07-00-083P RevA00 Page 82 of 101 4.2 E1 Technology Overview This section covers the fundamental concepts in 2.048 Mbit/s technology; sampling a signal, converting this information into a bitstream, and dividing the bitstream into segments (channels). This section also touches upon the basics of signalling technolo- gies like MFR2 and CAS.

  • Page 83: Mbit/S Data Rate

    MTT-14B e_Manual D07-00-083P RevA00 Page 83 of 101 Voice Signal Time Sampling Pulse Amplitude Modulation Quantization 00101 101 101 101 10 Time 11000100 Figure 57 Converting a Voice Signal The Nyquist theorem requires that the signal be sampled at twice the signal’s maximum frequency in order for the signal to be reproduced without a loss of information.

  • Page 84: Line Coding

    MTT-14B e_Manual D07-00-083P RevA00 Page 84 of 101 4.2.5 Line Coding Two common E1 line coding types are shown in Figure 58: 2.37V AMI Line time Coding -2.37V 2.37V HDB3 Line time Coding -2.37V Note: This voltage is seen from a 75 Ω unbalanced connection.

  • Page 85: Signal Levels

    MTT-14B e_Manual D07-00-083P RevA00 Page 85 of 101 Number of Polarity of Previous Pulse pulses (since last substitution). Even (substitute B00V) (substitute 000V) Figure 59 HDB3 Encoding The E1 module can be configured to detect the one of the two types of HDB3 substitution codes, even if they are not matched to the proper number of pulses since the last substitution.

  • Page 86: Mbit/S Framing

    MTT-14B e_Manual D07-00-083P RevA00 Page 86 of 101 4.2.7 2.048 Mbit/s Framing E1 transmission utilizes two types of framing: FAS (Frame Align- ment Signal) and MFAS (MultiFrame Alignment Signal). Framing is necessary so that the equipment receiving the E1 signal is able to identify and extract the individual channels.
  • Page 87 MTT-14B e_Manual D07-00-083P RevA00 Page 87 of 101 • When CRC is enabled, bit 1 is used for the Cyclic Redundancy Check-4 performance monitoring. When CRC is enabled, this bit may only be changed when CRC is disabled. • The second bit is set to 1 to avoid FAS signal confusion.

  • Page 88: Crc-4

    MTT-14B e_Manual D07-00-083P RevA00 Page 88 of 101 CRC-4 Error Checking in a MultiFrame Format TIME SLOT 0 Bits FRM FRM Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 Notes: • SMF-FRM+1: Sub-Multiframe #1.
  • Page 89 MTT-14B e_Manual D07-00-083P RevA00 Page 89 of 101 Two things to remember when using CRC-4 errors to determine the performance of an E1 circuit. Each individual CRC-4 error does not necessarily correspond to a single bit error. Multiple bit errors within the same sub-multiframe will lead to only one CRC- 4 error for the block.
  • Page 90 MTT-14B e_Manual D07-00-083P RevA00 Page 90 of 101 Without E-bit error transmission, only a complete circuit failure can be reliably determined at any point on the circuit. With a complete circuit failure, the test set will see either loss of signal, alarm indication signal, or remote alarm indication.
  • Page 91 MTT-14B e_Manual D07-00-083P RevA00 Page 91 of 101...

  • Page 92: General Information

    Page 92 of 101 5 General Information 5.1 Testing and Calibration Statement VeEX Inc. certifies that this product was manufactured, tested and verified according to the applicable VeEX Inc. Inc. manufacturing and test procedure(s). These formal proce- dures are designed to assure that the product meets its required specifications.
  • Page 93 MTT-14B e_Manual D07-00-083P RevA00 Page 93 of 101 C. Period. The warranty period for Hardware, Software and Firmware will be One (1) Year from date of shipment to CUS- TOMER. The COMPANY may also sell warranty extensions or provide a warranty term of three years with the original...

  • Page 94: Index

    MTT-14B e_Manual D07-00-083P RevA00 Page 94 of 101 Index Alarm Status Screen ATTN; 11 LOSW; 11 SNR; 11 Applications Accept a New Circuit; 71 In-Service Circuit Monitoring; 72 IP Echo Response; 46 IP PING Test; 43 IP Trace Route; 45 Loop Prequalification;...
  • Page 95 MTT-14B e_Manual D07-00-083P RevA00 Page 95 of 101 EBIT; 54 EFS; 54 ES; 54 FALM; 55 FE; 55 Hz/PPM; 55 LOFS; 55 LOSS; 55 Lpp; 55 MAX Hz, MIN Hz; 55 MFAL; 55 RCV Hz; 55 RxCLK; 55 SES; 55 SLIP;...
  • Page 96 MTT-14B e_Manual D07-00-083P RevA00 Page 96 of 101 Figures 01 Connector Panel; 5 02 Test Set LED Panels; 6 03 Module Menu Tree; 7 04 STU-x Configuration Screens; 8 05 Modem Status Screens; 9 06 Alarm Status Screen; 11 07 SHDSL System Loopback Screen; 12 08 LLC-BRG PING Setup Screen;...
  • Page 97 MTT-14B e_Manual D07-00-083P RevA00 Page 97 of 101 46 STU-R Emulation-Private Network Service; 70 47 STU-C Emulation; 70 48 Accept a New E1 Span; 71 49 In-Service E1 Circuit Monitoring; 72 50 Measuring E1 Signal Level; 73 51 V.54 Channel Loopback Test; 74 52 Encapsulation Technologies for IP over ADSL;...
  • Page 98 MTT-14B e_Manual D07-00-083P RevA00 Page 98 of 101 LEDs; 6 LLC PING Test Passed; 18 Menu Tree; 7 Modem Status Screens ATTENUATION; 10 CRC ERRORS; 10 CUR SNR MARGIN; 10 ERROR SEC; 10 ET; 9 LINE RATE; 9 LOSW SEC; 10 MAX SNR MARGIN;...
  • Page 99 MTT-14B e_Manual D07-00-083P RevA00 Page 99 of 101 TIME; 31 TOTAL; 32 VCI; 32 VPI; 32 OAM Connection; 31 PING Setup Screens AUTHENTICATION PAP, CHAP, or AUTO; 20 DESTINATION IP; 16, 17, 22 ENCAPSULATION LLC; 17 LLC, VC MUX, or AUTO; 15, 20 GATEWAY;...
  • Page 100 MTT-14B e_Manual D07-00-083P RevA00 Page 100 of 101 WIRES 2 and 4-WIRE; 8 STUx E1 Alarm Status Screen ATTN; 52 LOSW; 52 SNR; 52 STUx E1 and E1 Configuration Screens CRC-4; 48 FRAMING PCM-30, PCM-31, or UNFRAME; 47 RX PORT TERM, BRIDGE, or MONITOR;...
  • Page 101 MTT-14B e_Manual D07-00-083P RevA00 Page 101 of 101 Test Patterns Custom Patterns Creating, Sending, Viewing, and Deleting; 61 Test Patterns-Standard; 59 Test Pattern Screen; 59 Trace Route Screen; 45 UNI VPI and VCI Values; 26 VCC Scan Screen CLP; 28 ET;...

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