Bell 9508 Description And Operation Download Page 1 | Manualshive

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Summary of Contents for 9508

Page 1: ...21A data test set DTS Add references to the 71D and 76D power units Make revisions due to equipment changes Since this reissue constitutes a general revision arrows ordinarily used to indicate changes...

Page 2: ...UNIT WRITING SHELF ALARM INDICATORS TRUNK FAILURE DISPLAY JACK PANELS DRSIU JACKS DRSIU DECAL DIGITAL SIGNAL TEST UNIT DATA RATE DECAL CALL PROGRESS CODES DECAL KS 20909 DTS TRANSMITTER CLOCK SWITCH...

Page 3: ...DIRECTOR telephone private branch exchange PBX etc is to be connected to the lines between the testboard and the KTU shelf a KS 19252 bridging adapter must be used 1 09 The transmitter and receiver DT...

Page 4: ...Digital Data System 550A Type Channel Service Unit Test Procedures SECTION 595 300 500 TITLE Switched Digital Data System SOlA Type Switched Data Service Unit Test Procedures 1 17 The 950B testboard c...

Page 5: ...dules The jacks in the modules are miniature type telephone jacks A colored pin is located in the middle of the top four jacks in each module to indicate the data rate of that particular channel Fig 3...

Page 6: ...the rear of a cord reel unit The dock cords from the test sets are inserted into a 5 pin male connector located at the top rear of the equipment shelf The power cords plug into a duplex receptacle on...

Page 7: ...pectively 2 Three KS 19088 L7 connectors P8 Connects to the two signal jacks J9 and J10 P12 Connects to the CONT CODE switch P14 Connects to the CLOCK switch clock alarm circuitry and lamp and to the...

Page 8: ...provides 5 volts to the DTSU 2 19 The rear of the equipment shelf contains the following Note The numbers preceding each description below correspond to the numbers in Fig 6 1 One KS 19088 L16 male co...

Page 9: ...f can be equipped with 400D and 416A KTUs according to job requirements Positions 1 through 4 in the shelf are for 416A KTUs only while positions 5 through 12 are for 416A or 400D KTUs The HOLD key in...

Page 10: ...into either the FROM NEAR or FROM FAR jack the channel pair is opened at this point and data or test signals from either the near or far end can be checked Page 10 at the testboard When the TRMT CONT...

Page 11: ...600 101 3 08 For a functional description of the circuit cy controls and indicators in the receiver and the transmitter DTSs refer to Sections 107 601 100 and 107 600 100 respectively 3 09 The MSU con...

Page 12: ...Page 12 X TO CUSTOMER LINE TO 758C SWITCH VIA TRUNK CKT w z y X l n rL_ FAR A MON v FAR A l A NEAR rc 1 V MON NEAR Fig 9 Line Jacks nMON UNEAR MON n FAR U Fig 10 Trunk Jacks TO 758C SWITCH VIA LINE CK...

Page 13: ...lash if the CLR key is not depressed before the TRMT cord reel plug is removed from the testboard jack after an MJU has been signaled BRANCH keys 1 through 4 These keys are used to select the proper M...

Page 14: ...es displayed when MSU BRANCH keys are depressed in order to access the station specified in Fig 13 Figure 14 parts A B and C show the BR numbers and HUB ID codes displayed after BRANCH keys 2 2 and 3...

Page 15: ...lly buzz 3 15 The 400D KTUs in the KTU shelf provide pickup or hold of a CO line when a call is placed to or received from another STC or other location The 400D KTUs also cause the buzzer to sound an...

Page 16: ...l selected by the clock switch The bipolar clock signal is a composite signal which contains both the 8 kHz and 64 kHz timing signals HL49B CP separates the 8 and 64 kHz signals from the incoming cloc...

Page 17: ...ng ISS 2 SECTION 666 600 1 01 TABLE B CODES GENERATED BY THE MSU DESIGNATION CODE TEST ALERT 01101100 MJU ALERT 01110001 BRANCH 1 00101001 BRANCH 2 00101011 BRANCH 3 00101101 BRANCH 4 00101111 UMC 000...

Page 18: ...old 1 Originate or answer a call 2 Operate HOLD key The HOLD lamp will light and the pickup lamp will wink Page 18 3 Release pickup key and pickup lamp will still wink 4 Release HOLD key HOLD lamp wil...

Page 19: ...TION 666 600 101 The transmitter DTS IDLE CODE key should not be depressed and the BYTE ENCODER switches should not display the idle code byte 01111110 or 11111110 before or during the following steps...

Page 20: ...to the jacks and interrupting service on the channel lines Clock Circuit Check Check the clock failure lamp located above the clock switch and for presence of clock signals on both lines DAILY 4 17 Th...

Page 21: ...Administration System Turnup Procedures Remote Office Equipment Trunk Failure Display SECTION 365 330 500 518 215 100 518 215 400 666 600 301 666 600 501 807 601 150 807 601 180 ISS 2 SECTION 666 600...

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