Sunrise telecom SSxDSL-5M User Manual

Idsl module for the mtt and xdsl family of products

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MAN-10980-US001 Rev. H00
IDSL Module
for the MTT and xDSL
Family of Products
User's Manual
SSxDSL-5M
302 Enzo Drive San Jose, CA 95138
Tel: 1-408-363-8000 Fax: 1-408-363-8313
SSxDSL-5M
1

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  • Page 1 MAN-10980-US001 Rev. H00 IDSL Module for the MTT and xDSL Family of Products User’s Manual SSxDSL-5M 302 Enzo Drive San Jose, CA 95138 Tel: 1-408-363-8000 Fax: 1-408-363-8313 SSxDSL-5M...
  • Page 2 WARNING Using the supplied equipment in a manner not specified by Sunrise Telecom may impair the protection provided by the equipment. CAUTIONS! • Do not remove or insert the module while the test set is on. Inserting or re- moving a module with the power on may damage the module.
  • Page 3: Table Of Contents

    2.6.1 Saving a Test ..............63 2.6.2 Viewing a Stored Test ...........63 2.6.3 Printing a Stored Test ...........63 2.6.4 Deleting a Stored Test ..........63 2.6.5 Locking & Unlocking a Stored Test .......63 2.6.6 Renaming a Stored Test ..........63 2.7 Profiles ................65 SSxDSL-5M...
  • Page 4 3 Applications .............67 3.1 LT Mode Testing ...............67 3.2 ISDN Call Setup Testing ..........69 3.3 X.25-BRI Testing ..............70 4 General Information ........73 4.1 Testing and Calibration Statement ........73 4.2 Express Limited Warranty ..........73 4.3 Customer Service ............73 Index ..............75 SSxDSL-5 IDSL Module...
  • Page 5: Idsl Module

    Red: The test set is currently detecting an error. For S/T In- terface testing, this could be a Frame error. For U interface testing, this could be NEBE or FEBE errors. • Blinking Red: The test set has previously detected an error, but that error is no longer present. SSxDSL-5M...
  • Page 6 BPV/CODE • Red: The test set is currently detecting a Bipolar Violation on the S/T interface. • Blinking Red: The test set has previously detected a BPV on the S/T interface, but the error is no longer present. PAT SYNC •...
  • Page 7: Module Connector Panel

    2B1Q signal. Use it in LT mode when EXT-U has been selected as the TX Clock source. A U 2B1Q reference signal can be obtained from an IDSL output on a DSLAM. HANDSET This is an RJ-9 port that requires the Sunrise Telecom SS427 handset. SSxDSL-5M...
  • Page 8 SSxDSL-5 IDSL Module...
  • Page 9: Idsl Menus

    CALL SETUP 2.3.3 D CHANNEL STATUS X.25 - BRI 2.4.1 2.3.4 OTHER FEATURES TEST CONFIGURATION 2.4.2 2.3.5 CALL SETUP BERT AND RESULTS 2.4.3 2.3.6 PROTOCOL ANALYSIS PROTOCOL ANALYSIS 2.4.4 2.3.7 OTHER SETUP OTHER SETUP Figure 3 Module Menu Tree SSxDSL-5M...
  • Page 10: Idsl/Isdn Bert Main Menu

    2.1 IDSL/ISDN BERT Main Menu See Section 3.1 for procedures for LT Mode Testing. This menu screen contains: • TEST CONFIGURATION • EOC CONTROL • M4 ACCESS • BERT AND RESULTS 2.1.1 Test Configuration The configuration settings change slightly whether a U or S/T interface is tested.
  • Page 11: U Interface Test Configuration

    In this mode, the entire 144 kbps signal will be looped from the receive to transmit signal. LT-LOOP mode is similar to the lower illustration in Figure 4; the only difference is it loops the received signal back toward the customer. SSxDSL-5M...
  • Page 12 Tx CLOCK Options: INT (F1), EXT-T1 (F2), EXT-E1 (F3), EXT-U (F4) The transmit clock setting determines the clock source to time the transmit signal. This is applicable to LT mode only; for NT mode, the test set uses the timing received from the network. Exter- nal timing should be used when the IDSL circuit is transported through a digital loop carrier system that is timed off a central network clock.
  • Page 13 4. When finished, press DONE (F1). 5. Select the just created USER pattern and press ENTER. The selected USER is then displayed in the TEST PATTERN line in the TEST CONFIGURATION screen. When finished, press ESC. SSxDSL-5M...
  • Page 14: S/T Interface Configuration

    2.1.1.2 S/T Interface Configuration 11:50:45 NO PWR TEST CONFIGURATION INTERFACE MODE : LT-144K TEST CHANNEL : B1 TEST PATTERN : 2047 S/T TERM : ON Figure 6 S/T Interface Test Configuration Screen DSLAM CO Switch S/T TE-144K Mode S/T NT-144K Mode Figure 7 S/T TE and NT-144K Modes Configure the following settings for the S/T interface: MODE...
  • Page 15 ON: The line is terminated with 100W. Use when the test set is the only TE device connected to the S/T bus. • OFF: Place a high impedance resistance on the line.Use when there are other TE devices connected to the S/T bus. SSxDSL-5M...
  • Page 16: Eoc Control

    2.1.2 EOC Control If LT was selected as the TEST MODE, a loopback can be used on NT1 and any U-repeaters in the this screen. The Embedded Operations Channel is a 2 kbps section of overhead on the ISDN basic rate signal. It carries special commands to U-BRITE cards, mid-span repeater, or NT1s.
  • Page 17 EOC BITS will change accordingly. However, if desired, they may be manually entered by: 1. Press SHIFT and use the numeric keypad to enter zeros and ones. 2. Press SHIFT to use to move within the line. When ready, press F1 to send the command. SSxDSL-5M...
  • Page 18: M4 Access

    2.1.3 M4 Access In this screen, view and control the D-channel M4 maintenance bits. M4 maintenance bits are sent in both directions of the ISDN BRI span. This feature is available only with U interface testing. 11:50:45 M4 ACCESS NET -> NT 01111111 _ACT *DEA *SCO *UOA *AIB NT ->...
  • Page 19 CSO: The Cold Start Only bit is set to 1 to indicate that the NT1 has a Cold Start Only transceiver. SAI: The S/T Interface Activation Indicator bit is set to 1 to indicate the S/T Interface is active or it is set to 0 to indicate no activity. SSxDSL-5M...
  • Page 20: Bert And Results

    2.1.4 BERT and Results Use this for testing of the 11:50:45 Meas physical layer, as well as > < > < running a BERT. Three screens are available. ELASPSED TIME: 000:03:24 These measurements are independent of test pattern ERROR COUNT: and pattern synchronization.
  • Page 21 RESULT - SIGNAL U FEBE S/T FRAME ERR U NEBE S/T BPV PAGE-UP PAGE-DN STOP PAGE-UP PAGE-DN STOP Figure 12 Signal Results Screens For U interface testing shown in the left screen in Figure 12 the signal results are: SSxDSL-5M...
  • Page 22 U FEBE: This is the number of Far End Block Errors since the beginning of the test. A FEBE indicates that CRC errors were detected at the far end. U NEBE: This is the number of Near End Block Errors since the beginning of the test.
  • Page 23: 40 Khz Tone

    Use this function to send a 40 kHz tone at a fixed level of +13.6 dBm to the U interface. 11:50:45 40kHz TONE GENERATOR Sending tone at +13.6 dBm Figure 13 40kHz Tone Generator Screen As seen in Figure 13, there are no F-key controls. To stop sending the tone, press ESC. SSxDSL-5M...
  • Page 24: Isdn-Bri

    2.3 ISDN-BRI With option SWxDSL-5BRIN and/or SWxDSL-5BRIE, the module provides basic call setup testing. See Section 3.2 for the procedure on placing a basic rate call from a U interface. This menu screen contains: • TEST CONFIGURATION • CALL SETUP •...
  • Page 25 It is typically the 7 or 10 digit phone number of the circuit, with any combination of 0’s and 1’s as the prefix and/or suffix. Enter the proper SPID in order to test. SSxDSL-5M...
  • Page 26: Directory #1 And #2

    SPIDs are not required for point-to-point circuits, or for ETSI circuits. When these are selected the SPID settings are not dis- played.If uncertain, some common SPIDs used are: • 01xxxxxxx0 (x represent 7-digits) • xxxxxxxxxx0101 (x represent the area code + 7-digits) •...
  • Page 27: Call Setup

    LOCAL: Specify a Subscriber type of number. CALLED NUM PLAN Options: UNKNOWN (F1), TELEPH (F2), PRIVATE (F3) Select a Called Number Plan to to compose the Numbering Plan Identification field in the called party element of a call setup mes- sage (refer to ITU-T Q.931). SSxDSL-5M...
  • Page 28 • UNKNOWN: Specify an Unknown Numbering Plan. • TELPH: Specify a Telex Numbering Plan. • PRIVATE: Specify a Private Numbering Plan. DIAL NUM This is the number that you intend to dial to place your call. The number may be entered directly from the keypad by pressing SHIFT using the numeric keypad to enter the desired digits or press F3 to display a SPEED DIAL list screen.
  • Page 29: D-Channel Status

    SPID #2: Service Profile ID to be used in channel 2. TX: Transmitted CALL CONTROL message. RX: Received CALL CONTROL message DIS LOC: CALL DISCONNECT Location information. DIS CAUSE: CALL DISCONNECT Cause code. When finished, press ESC. 2.3.3 D-Channel Status See Section 2.3.2-ISDN Call Status Screen. SSxDSL-5M...
  • Page 30: Other Features

    2.3.4 Other Features The menu contains AUTOMATED TESTS. Several automated tests for ISDN Basic Rate testing are available. The menu screen that appears depends on the configured protocol. There are two ways to access the automated tests menu. In the ISDN-BRI menu, press AUTO.The test set must be in the ISDN-BRI menu to access this feature.
  • Page 31: Auto Spid Detect

    4. If the correct SPIDs are found, “TEST COMPLETED; SPID#1 OK, SPID#2 OK” and the SPID values are displayed along with a green LP1 SYNC LED. The SPID values are automatically entered into the TEST CONFIGURATION screen. If the SPIDs cannot be found, FAILED is displayed. SSxDSL-5M...
  • Page 32: Auto Service Scan

    2.3.4.3 Auto Service Scan This feature scans the line to 11:50:45 determine which services are > + PWR< > < supported. It can run the test for AUTO SERVICE SCAN both the local switch, as well as SCAN MODE DISTANCE for a distant phone number.
  • Page 33: Self Bert Call

    BERT & RESULTS screen. 7. To disconnect from the call, press ESC and then press STATUS to display the CALL STATUS screen. Press ON-HOOK (F1) to disconnect the call. Both C1 and C2 will now be on-hook. SSxDSL-5M...
  • Page 34: Dual Bert Call

    2.3.4.5 Dual BERT Call This feature automatically sets up two Data-64K calls, and runs two independent BER tests on B1 and B2. It can be used as a quick method to qualify a basic rate line for data service. For this test, both SPIDs must be configured to support data.
  • Page 35: Bonding Call

    DIAL NUMBER B2: Enter a dial number for channel B2 in a bond- ing call test manually or through the SPEED DIAL list screen, see Section 2.3.2-DIAL NUM. When finished, press F4 to start and see steps 4, 5, and 6 in Section 2.3.4.5. SSxDSL-5M...
  • Page 36: Supplementary Service Scan

    2.3.4.7 Supplementary Service Scan Used with ETSI protocol to verify which supplementary services are supported on the circuit. 11:50:45 11:50:45 > +POWER< > Unt:RDY +POWER< > < > < SUPPLEMENTARY SERVICE SCAN SUPPLEMENTARY SERVICE SCAN ok DDI - SUB - AOC-S ok MSN - CFU - AOC-D...
  • Page 37 UUS: User to User Signalling allows a user to send an Informa- tion message in the Setup, Alerting, or Connect message on the D-channel, without connecting the call; the message shows on the ISDN phone display. SSxDSL-5M...
  • Page 38: Bert And Results

    2.3.5 BERT and Results This allows for testing the physical signal, as well as performing a BERT on a data call. On the U Interface, both near and far end block errors can be seen.When a data call is established, a logical results screen is present recording bit errors for the data call.
  • Page 39 DGRM: Number of Degraded Minutes since the start of the test. It contains 60 consecutive non-severely errored seconds during which the BER is worse than 1e but better than 1e %DGRM: Percentage of Degraded Minutes since the start of the test. SSxDSL-5M...
  • Page 40: Protocol Analysis

    2.3.6 Protocol Analysis This requires software option SWxDSL-5BRIPA1 and the use of an SRAM card installed in the memory card slot of the chassis. A notice is displayed when entering ISDN-BRI that this feature is not available if an SRAM card is not installed. 2.3.6.1 Filter Setup 11:50:45 >...
  • Page 41: View Print Buffer

    CLEAR (F3): Clears all the messages of the current trace in the Capture Buffer. A confirmation screen “Press ENTER to clear the buffer” is displayed, or press ESC to abort. FILTER (F4): Displays the FILTER SETUP screen. Previously described in Section 2.3.6.1. SSxDSL-5M...
  • Page 42 08:21:36 > +POWER< > < 2006-05-23 00:07:16.372 #00001 ST TE->NT C/R:0 P/F:0 SAPI : 000 TEI : 070 L2 MSGTYPE : I NS : 003 : 005 L3 MSGTYPE : SETUP CALLREFL : 1 CALLREFV : 1 PREVIUS NEXT InfoElm Figure 29 Current Trace-Decode View Screen The following is reported: 2006-05-14: Year/Month/Date...
  • Page 43: L3 Message Type

    PREVIUS (F1): Displays the previous message. If the current message displayed is the first trace, the last trace is displayed. NEXT (F2): Displays the next message meeting the filtering cri- teria. If the current message displayed is the last message, the first message is displayed. SSxDSL-5M...
  • Page 44 HEX/DECODE (F3): Toggles between hexadecimal and decode display format.The trace is decoded by default when entering the Current Trace-View screen. 08:21:36 > +POWER< > < 2006-05-23 00:07:16.372 #00001 ST TE->NT C/R:0 P/F:0 00 8D 06 0A 08 01 01 05 04 03 80 90 A3 18 01 83 6C 08 00 80 33 38 34 30 30 30 70 07 80 33 38 34 30 32 30...
  • Page 45 RETURN Figure 31 Current Trace-InfoElm Screens These screens contain the following F-keys: PAGE-UP (F1) /PAGE-DN (F2): Use to scroll through the available information element decoding screens. RETURN (F4): Return to the previous screen shown in Figures 29 or 30. SSxDSL-5M...
  • Page 46 View Print Buffer Printing Option Messages can be printed from the Current Trace screen, by press- ing F2. A sample printout is shown in Figure 32. The message in the NT to TE direction is indented to allow for easy identification of the message source.
  • Page 47: Other Setup

    TEI value in the range of 0 to 63. The 1/10 key determines the increase/decrease factor. In this case, the test set will send a SABME with the TEI set. If the switch accepts the TEI, it responds with a UA with the same TEI. SSxDSL-5M...
  • Page 48: Call Appearance

    CALL APPEARANCE The CAP (Call Appearance) value is used on ISDN BRI lines which are configured with CACH (Call Appearance Call Handling), and/or EKTS (Electronic Key Telephone Systems). CAP is used to determine a button number on a key telephone. This value is used for both placing a call to test the number of CAPs a line may have, and receiving a call, to test for a particular directory number, which can be associated with a specific button.
  • Page 49: X.25-Bri

    DTE-S/T: Emulate the customer side (Data Terminal Equip- ment) at the S/T interface. PROTOCOL Options: 5ESS (F1), DMSF (F2), NAT’L (F3), ETSI (F4) Match the protocol of the circuit. • 5ESS: AT&T custom protocol. • DMSF: Northern Telecom DMS custom protocol. SSxDSL-5M...
  • Page 50 • NAT’L: National standard defined by Bellcore. • ETSI: Euro ISDN standard defined by ETSI. LINE TYPE Options: P-to-MP (F1), P-to-P (F2) Match the line type of the circuit. This will be P-to-MP, unless testing an AT&T custom 5ESS or ETSI switch. •...
  • Page 51: Call Setup

    SND MSG: Send a data packet. The test set transmits two dif- ferent data packets: “The quick brown fox jumps over the lazy dog” and “SUNRISE TELECOM A step ahead!”.The data packet alternates each time SND MSG is pressed. SSxDSL-5M...
  • Page 52 SVC call identified in the selected LCN. • SND MSG: Send a data packet.Two different data packets are sent each time SND MSG is pressed; “The quick brown fox jumps over the lazy dog” and “SUNRISE TELECOM A step ahead!”. SSxDSL-5 IDSL Module...
  • Page 53: Protocol Analysis

    1, 2, and 3. • POST: Enables filtering after capture. • Layer 1: Can be set for Capture or Reject. • Layer 2: Can be set for Capture or Reject. • Layer 3: Can be set for Capture or Reject. SSxDSL-5M...
  • Page 54 2.4.3.2 View Print Buffer This menu contains CURRENT 11:50:45 TRACE. Use the CURRENT > +POWER< > < TRACE screen to filter mes- CURRENT TRACE sages to view and or print traces of interest. Figure 38 TOTAL MSG : 21 shows an example of a record. VIEW FROM : 1 VIEW TO : 21...
  • Page 55 (D-ch packet calls). • 63: Layer 2 management procedures. TEI: Terminal Endpoint Identifier identifies the terminal at the end of the connection. The values may be in the range of 0 to 127. These values are grouped as follows: SSxDSL-5M...
  • Page 56 • 0-63: Fixed TEI assignment • 64-126: Automatic TEI assignment • 127: Group TEI for broadcast data link connection NS: Send sequence number of the message. NR: Receive sequence number of the message. L2 MSGTYPE: I: Layer 2 message type. These messages are: •...
  • Page 57 RETURN Figure 40 X.25 Current Trace-InfoElm Screen This screen contain the following F-keys: PAGE-UP (F1)/PAGE-DN (F2): Use to scroll through the available information element decoding screens. RETURN (F4): Return to the previous screen shown in Figures 38 or 39. SSxDSL-5M...
  • Page 58: Lcn: 2

    View Print Buffer Printing Option Messages can be printed from the Current Trace screen, by press- ing F2. A sample printout is shown in Figure 41: SunSet MTT IDSL Module ISDN Test SunSet MTT S/N: 0507230009 SW Version: T6.00y Date: 05/23/06 Source: Capture Buffer Circuit ID: ********************************...
  • Page 59: Echo Mode

    UA with the same TEI. Note: DMS switches require a fixed TEI value for X.25. ECHO MODE Options: OFF (F1), ON (F2) When set for ON, the test set will loop back the incoming data. SSxDSL-5M...
  • Page 60 Options: ON (F1), OFF (F2) When set for ON, the test set adds 4 predefined characters into the user data field (01 00 00 00 h) and only 12 digits of user data can be entered. When OFF, all 16 digits of the user data field may be user-defined.
  • Page 61: Sram Utility

    Press YES (F1) to format or NO (F2) to abort the procedure. If YES is pressed, the screen displays “FORMATTING..”. Once done, the screen will change back to the SRAM CARD UTILITY screen with the chosen memory allotment highlighted on the SRAM FOR TRACE line. SSxDSL-5M...
  • Page 62: View/Store/Print

    2.6 View/Store/Print Use this screen to store different results to view or print at a later time. To store results, press STORE in any screen that it appears in, see Section 2.6.1. 11:50:45 VIEW/STORE/PRINT Free space: 93223 Kbyte NAME TYPE LOCK 1.05BE0001 IDSL...
  • Page 63: Viewing A Stored Test

    Figure 45 is displayed. 4. Press INPUT (F3). Note that the ‘A’ character is highlighted and the INPUT F-key has changed to STOP. 5. Select the desired character by pressing 6. Press ENTER to place the selected character into the FILE- SSxDSL-5M...
  • Page 64: Profiles

    NAME line. Continue this process until the name is complete. Enter up to 15 characters. • If a mistake is made: A. Press STOP (F3). B. Move the FILENAME cursor to the incorrect character. C. Press DELETE (F2) to delete the character or, press IN- SERT (F1) to insert a character.
  • Page 65 Note: The DEFAULT file cannot be deleted or unlocked. 11:50:45 PROFILE LIST Free space: 93863 kbyte FILENAME LOADED MODULE LOCK 1.DEFAULT VOIP 2.P00001 VOIP 3.SANTA ROSA VOIP LOAD STORE RENAME more DELETE LOCK more Figure 46 Profile List Screen SSxDSL-5M...
  • Page 66 SSxDSL-5 IDSL Module...
  • Page 67: Applications

    First, loop up the NT1 device to test the whole 2B1Q span. If errors are present, then try looping each U-repeater/ U-BRITE card on the span to sectionize the problem. To loop up the NT1, make sure ADDRESS reads 0 (NT1). SSxDSL-5M...
  • Page 68 B. At COMMAND, select the message to send. To loopback the full 2B+D (144k) pipe, select LOOP2BD (F3). After selecting the proper message, press F1 to send. C. Watch the receive command at the bottom of the screen (RX COMMAND).When the repeater loops up, the message should be displayed.
  • Page 69: Isdn Call Setup Testing

    9. To disconnect from the call, return to CALL SETUP, select DIAL NUM and press CALL 1HK (F1). The C1 handset icon should return to the on-hook position. Alternately a call can be disconnected from CALL CONTROL, which can be accessed by pressing STATUS. SSxDSL-5M...
  • Page 70: X.25-Bri Testing

    The test set alternates between two different data packets: “SUNRISE TELECOM A step ahead” and “The quick brown fox jumps over the lazy dog.” If there is a loopback in place, a “Receive data”...
  • Page 71 10. Press F3 to send the phone number as a packet of data. 11.When finished, press F2 to clear the call. A “Clear confirmed” message should then be displayed. SSxDSL-5M...
  • Page 72 SSxDSL-5 IDSL Module...
  • Page 73: General Information

    Sunrise Telecom agrees to repair or replace any assembly or comp nent found to be defective under normal use during this period. The obligation under this warranty is limited solely to repairing or replacing the product that proves to be defective within the scope of the warranty when returned to the factory.
  • Page 74 A Return Merchandise Authorization (RMA) Number is required before any product may be shipped to Sunrise Telecom for repair. Out-of-warranty repairs require both an RMA and a Purchase Order before the unit is returned. All repairs are warranted for 90 days.
  • Page 75: Index

    BERT and Results Summary Screen; 20 Bonding Call Screen; 35 Calibration Statement; 73 Call Control Screens ASSIGNED TEI #1; 29 ASSIGNED TEI #2; 29 DIS CAUSE; 29 DIS LOC; 29 RX; 29 SPID #1; 29 SPID #2; 29 TX; 29 SSxDSL-5M...
  • Page 76 D-Channel Status; 29 Dual BERT Call Screen; 34 EOC Control Screen ADDRESS; 16 COMMAND NORMAL, LOOP2BD, LOOPB1, LOOPB2, REQ_CRC, NTI_CRC, or HLD_STA; 17 EOC BITS; 17 Figures 01 Test Set LED Panels; 5 02 Module Connector Panel; 7 03 Module Menu Tree; 9 04 U NT and LT-144K Modes;...
  • Page 77 INT, EXT-T1, EXT-E1, or EXT-U; 12 ISDN-BRI BERT and Results Logical Screen %AS; 39 %DGRM; 39 %ES; 39 %ESF; 39 %SES; 39 %UAS; 39 AS; 39 BER; 39 BIT; 39 DGRM; 39 EFS; 39 ES; 39 ET; 38 RCV; 38 SSxDSL-5M...
  • Page 78 RT; 38 SES; 39 UAS; 39 XMT; 38 ISDN-BRI BERT and Results Signal Screen U FEBE; 38 U NEBE; 38 ISDN-BRI BERT Other Setup Screen CALL APPEARANCE; 48 DIAL METHOD OVERLAP or EN-BLOC; 47 DIGIT DIALING; 48 ENCODING LAW u-LAW or A-LAW; 48 FIRST CALL I/O;...
  • Page 79 SRAM Card Utility Screen; 61 Supplementary Service Scan Screens AOC-D/E/S; 36 CFB; 37 CFNR; 37 CFU; 37 CLIP; 37 CLIR; 37 COLP; 37 COLR; 37 CUG; 37 HOLD; 37 MCID; 37 MSN; 37 SUB; 37 TP; 37 UUS; 37 Tables SSxDSL-5M...
  • Page 80 01 L3 Message Type; 43 02 L3 Message Type-X25 Packet Testing; 56 View/Store/Print Screen Deleting a Stored Test; 63 Locking & Unlocking a Stored Test; 63 Printing a Stored Test; 63 Renaming a Stored Test; 63 Saving a Test; 63 Viewing a Stored Test;...
  • Page 81: 5Ess, Dmsf, Nat'l, Or Etsi; 49

    MODE DTE-U or DTE-S/T; 49 PROTOCOL 5ESS, DMSF, NAT’L, or ETSI; 49 SPID # 1; 50 SSxDSL-5M...
  • Page 82 SSxDSL-5 IDSL Module...

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