AN INTRODUCTION TO THE BE9000-DP DUAL DROP & INSERT OPTION FOR THE BE9000-L3 TEST SET SLIDE 1 OF 22

TO REVIEW WHAT YOU’VE DONE, SELECT THE KEY YOU’D LIKE TO SEE AGAIN: This presentation is designed to give you an overview of all the keys, buttons, displays and other gadgets on the front panel of the Digital Interface in your BE9000-DP test set. Please refer to your USER’S MANUAL for more information about any of the functions discussed here. If you have any questions, please feel free to contact us at your convenience at don.brehm@itcmail.net, or 402-498-8400. TO VIEW THIS PRESENTATION, USING PowerPoint, GO TO [View] AND SELECT [Slide Show]. USE YOUR COMPUTER [PAGE UP] OR [PAGE DOWN] KEYS, OR CLICK ANYWHERE ON THE SLIDE TO ADVANCE. THE [HOME] KEY WILL TAKE YOU TO THE FIRST SLIDE. THE [END] KEY WILL TAKE YOU TO THE LAST SLIDE. TO REVIEW WHAT YOU’VE DONE, SELECT THE KEY YOU’D LIKE TO SEE AGAIN: MAIN SCREEN MAIN MENU Display Function, Selection, Text Title, Screen #, Side # Circuit Status Lines RSD232 & DDS Ports OPTION CONTROL (Key Pad) Jack Field DS1 RCV/XMT Keys BASE ACCESS Key FUNCTION Keys HELP Key NEXT Key PREV Key HOME Key SLIDE 2 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT This is the Digital Interface of the BE9000-DP. The Dual Drop and Insert Interface for testing T Carrier is mounted in the lid of the BE9000-L3. BE-9000 INTERFACE UNIT MENU GUIDE DS1 BERT F5 F4 F3 F6 F2 F1 HOME STORED TESTS DS1 PERFORMANCE MONITOR DS0 DROP & INSERT SYSTEM SETUP WIDEBAND TRANSMIT RECEIVE 20Hz - 200kHz -40dBm - +10dBm -50dBm - +10dBm CIRCUIT ACCESS XMT RCV INTERFACE CONTROL BRDG TERM MON DS1 RCV2 RCV1 BASE ACCESS 600 OPEN MENU CONTROL HELP NEXT PREV OPTION CONTROL KP 1 2 ABC 3 DEF A STP 4 GHI 5 JKL 6 MNO B ST2P 7 PRS 8 TUV 9 WXY C ST3P # ST D CANCEL ENTER DDS PORT RS-232C (DCE) DS1 SIDE 1 DS1 SIDE 2 R V X M T AN INDEPENDENT TECHNOLOGIES COMPANY SLIDE 3 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT BE-9000 INTERFACE UNIT MENU GUIDE DS1 BERT F5 F4 F3 F6 F2 F1 HOME STORED TESTS DS1 PERFORMANCE MONITOR DS0 DROP & INSERT SYSTEM SETUP WIDEBAND TRANSMIT RECEIVE 20Hz - 200kHz -40dBm - +10dBm -50dBm - +10dBm CIRCUIT ACCESS XMT RCV INTERFACE CONTROL BRDG TERM MON DS1 RCV2 RCV1 BASE ACCESS 600 OPEN MENU CONTROL HELP NEXT PREV OPTION CONTROL KP 1 2 ABC 3 DEF A STP 4 GHI 5 JKL 6 MNO B ST2P 7 PRS 8 TUV 9 WXY C ST3P # ST D CANCEL ENTER DDS PORT RS-232C (DCE) DS1 SIDE 1 DS1 SIDE 2 R V X M T AN INDEPENDENT TECHNOLOGIES COMPANY MAIN SCREEN This screen or your Corporate Logo will appear at Power-ON, after the test set has run it’s self diagnostics. Press any F key to go to the MAIN MENU. SLIDE 4 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT MAIN MENU All tests start at the MAIN MENU. Press HELP here to view calibration dates, options installed, software version and the Serial Number for this test set. AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST D F6 WIDEBAND DDS PORT # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 5 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY DISPLAY SCREEN Shows set up options and status, and results of tests. Move to the next slide for more information about this screen. BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST D F6 WIDEBAND DDS PORT # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 6 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT DISPLAY SCREEN Selection text follows to the right of each key. When a selection is made with the function key, a box is drawn around the selection. FUNCTION KEYS These are Menu selection key indicators. When these keys are displayed with boxes around them they are functional, regardless of screen type (SET-UP, RESULT or CONFIGuration) and the displayed location of the keys, the operation is as defined in the HELP screen text. SLIDE 7 OF 22

DISPLAY SCREEN SIDE NUMBER SCREEN NUMBER TITLE BE9000-DP - DIGITAL INTERFACE UNIT DISPLAY SCREEN SIDE NUMBER The SIDE NUMBER refers to DS1 RCV1 or DS1 RCV2. If SIDE ONE is showing, selections and test results are related to the DS1 RCV1 input. SCREEN NUMBER This number allows the user to track the selected screen’s position within the total number of SETUP or RESULT screens. SETUP screens always precede RESULT screens. Use the NEXT [NXT] and PREVious [PRV] keys to select the next or previous screen. TITLE The text that appears in the title location always refers to the Main Menu selection and if this is a SET-UP, RESULT, or CONFIGuration screen. SLIDE8 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT DISPLAY SCREEN CIRCUIT STATUS LINE This line appears on all screens that relate to DS1 and DSØ testing. The line is divided with SIDE 1 information on the left and SIDE 2 information on the right. The information contained in the Status Line is a blend of MENU SELECTIONS, CIRCUIT ALARM CONDITIONS, CIRCUIT ERROR CONDITIONS and CURRENT CIRCUIT OPERATIONAL STATUS. SIDE 1 Information See next two slides. SIDE 2 Information See next two slides. SLIDE 9 OF 22

DISPLAY SCREEN FRAME FORMAT LINE CODE BE9000-DP - DIGITAL INTERFACE UNIT DISPLAY SCREEN FRAME FORMAT Selectable - SF, ESF or AUTO LINE CODE Selectable - AUTO, AMI, B8ZS SLIDE 10 OF 22

DISPLAY SCREEN CIRCUIT STATUS ALARM & ERROR STATUS BE9000-DP - DIGITAL INTERFACE UNIT DISPLAY SCREEN CIRCUIT STATUS The letters FRM indicate that the circuit is framed and operational. All other indications such as LOS, AIS, RED, YEL are indications of a circuit that is not fully operational. ALARM & ERROR STATUS When any of these DS1 circuit alarms occur (LOS, AIS, LOF, RAI) a flashing A will appear. When any of these DS1 circuit errors occur (BPV, EXZ, FE, SLIP, B8ZS, CRC-6) a flashing E will appear. SLIDE 11 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT BE-9000 INTERFACE UNIT MENU GUIDE DS1 BERT F5 F4 F3 F6 F2 F1 HOME STORED TESTS DS1 PERFORMANCE MONITOR DS0 DROP & INSERT SYSTEM SETUP WIDEBAND TRANSMIT RECEIVE 20Hz - 200kHz -40dBm - +10dBm -50dBm - +10dBm CIRCUIT ACCESS XMT RCV INTERFACE CONTROL BRDG TERM MON DS1 RCV2 RCV1 BASE ACCESS 600 OPEN MENU CONTROL HELP NEXT PREV OPTION CONTROL KP 1 2 ABC 3 DEF A STP 4 GHI 5 JKL 6 MNO B ST2P 7 PRS 8 TUV 9 WXY C ST3P # ST D CANCEL ENTER DDS PORT RS-232C (DCE) DS1 SIDE 1 DS1 SIDE 2 R V X M T AN INDEPENDENT TECHNOLOGIES COMPANY RS232C (DCE) This port is set up as a DCE Modem connector, which enables the Digital Option Package to connect directly to a DTE device such as a computer, printer or remote control terminal. DDS PORT This 9 PIN connector is used to connect various DDS test sets and other protocol analyzers. This is an input (TTL) and output port. SLIDE 12 OF 22

OPTION CONTROL (KEY PAD) BE9000-DP - DIGITAL INTERFACE UNIT BE-9000 INTERFACE UNIT MENU GUIDE DS1 BERT F5 F4 F3 F6 F2 F1 HOME STORED TESTS DS1 PERFORMANCE MONITOR DS0 DROP & INSERT SYSTEM SETUP WIDEBAND TRANSMIT RECEIVE 20Hz - 200kHz -40dBm - +10dBm -50dBm - +10dBm CIRCUIT ACCESS XMT RCV INTERFACE CONTROL BRDG TERM MON DS1 RCV2 RCV1 BASE ACCESS 600 OPEN MENU CONTROL HELP NEXT PREV OPTION CONTROL KP 1 2 ABC 3 DEF A STP 4 GHI 5 JKL 6 MNO B ST2P 7 PRS 8 TUV 9 WXY C ST3P # ST D CANCEL ENTER DDS PORT RS-232C (DCE) DS1 SIDE 1 DS1 SIDE 2 R V X M T AN INDEPENDENT TECHNOLOGIES COMPANY OPTION CONTROL (KEY PAD) The 4 x 4 key pad is used to enter dial digits, select stored tests, select or cancel choices from a CONFIGuration screen, and other functions being developed. SLIDE 13 OF 22

DS1 SIDE 1 & SIDE 2 RCV/XMT Jacks BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST F6 WIDEBAND DDS PORT # D WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG DS1 SIDE 1 & SIDE 2 RCV/XMT Jacks These jacks are used to connect the test set to the circuit under test. The LEDs indicate which jacks are active. 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 14 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP CIRCUIT ACCESS This location is reserved for future options. 1 2 3 A F1 STORED TESTS RS-232C (DCE) DS1 RCV1/RCV2 Keys These keys are used to select the correct receiver impedance for the selected test location. The impedance selection is indicated by the two LEDs above each key. TERM is selected when the test set terminates the DS1 circuit. The TERM LEDs are lit. BRIDGE is selected if a high impedance input is required. Both LEDs are lit. The BRIDGE mode must access a terminated cable pair for readings to be accurate. This is the POWER ON default mode. MONITOR is used for resistive monitor jack applications. The MON LED will be lit. Note: If the MONITOR jack is not resistor isolated, use the BRIDGED mode. F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST F6 D WIDEBAND DDS PORT # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 15 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR BASE ACCESS Key This key is used to isolate the analog BE9000 Base Test Set from the digital lid. The OPEN LED indicates isolation from the base test set. This is the Power On default mode. The 600 LED indicates connection to the Base Test Set. Always ensure the OPEN LED is lit when using the Base Test Set in a stand alone mode of operation without the Digital Interface. GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST F6 D WIDEBAND DDS PORT # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 16 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY FUNCTION Keys F1 - Selects STORED TESTS where available,. F2 - Selects DS1 PERFORMANCE MONITOR tests. F3 - Selects DS1 BERT tests. F4 - Selects DS0 DROP & INSERT tests. F5 - Selects the test set SYSTEM SETUP functions. F6 - Selects other test functions when available. All keys select additional functions within specific tests. BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST F6 D WIDEBAND DDS PORT # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 17 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT HELP Key This key is used to select the built-in user’s manual. The HELP screen displayed will be directly related to the screen that was displayed before entering HELP. The NEXT and PREV keys will access all additional HELP screens related to the screen showing. Use HOME to return to the test screen. PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST F6 D WIDEBAND DDS PORT # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 18 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST F6 D WIDEBAND DDS PORT NEXT Key This key is used to move to the next screen in the set up, help or test process. # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 19 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP KP ST F6 D WIDEBAND DDS PORT PREV Key This key is used to move to the previous screen viewed in the set up, help or test process. # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 20 OF 22

BE9000-DP - DIGITAL INTERFACE UNIT AN INDEPENDENT TECHNOLOGIES COMPANY BE-9000 INTERFACE UNIT MENU GUIDE OPTION CONTROL HOME ABC DEF STP 1 2 3 A F1 STORED TESTS RS-232C (DCE) F2 DS1 PERFORMANCE MONITOR GHI JKL MNO ST2P 4 5 6 B F3 DS1 BERT PRS TUV WXY ST3P F4 DS0 DROP & INSERT 7 8 9 C F5 SYSTEM SETUP HOME Key This key is used to escape from any screen to the Main Menu, or return from a HELP or CONFIGuration screen to the screen that was previously chosen. KP ST F6 D WIDEBAND DDS PORT # WIDEBAND INTERFACE CONTROL MENU CONTROL TRANSMIT DS1 SIDE 1 CANCEL ENTER 20Hz - 200kHz MON MON OPEN F1 F2 F3 -40dBm - +10dBm RECEIVE BRDG BRDG 20Hz - 200kHz R X TERM TERM 600 -50dBm - +10dBm C M CIRCUIT ACCESS V T DS1 DS1 BASE ACCESS F4 F5 F6 HELP NEXT PREV HOME RCV1 RCV2 RCV XMT DS1 SIDE 2 SLIDE 21 OF 22

You made it through this document. That’s a good thing!! CONGRATULATIONS !!! You made it through this document. That’s a good thing!! Now refer to your manual to set up and run a test, or run the Self Test included in this CD. We appreciate you support and your business. If you have any questions please contact us at 402-498-8400 or email - don.brehm@itcmail.net. SLIDE 22 OF 22