ADTRAN Total Reach TROCU DP Скачать руководство пользователя страница 17 | Manualshive

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Testing

61292006L1-5C

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Note: Minimum of 35 TIP bytes required to disable established latching loopback.

Note: X = Don't Care bit

Table 6. Latching Loopback Activation

Sequence Function

Byte Code

Number of Received Bytes

Clear existing loopbacks

Transition in progress (TIP)
X0111010

Minimum of 35 TIP bytes

Identify device to be looped

Loopback select code (LSC)
X1010101 - OCU
X0110001 - CSU
X1000001 - NEI

Minimum of 35 LSC bytes

Prepare to loop; send MAP code
after 30 bytes

Loopback enabled (LBE)
X1010110

Minimum of 100 LBE bytes

Activate loopback

Far-End voice (FEV)
X1011010

Minimum of 32 FEV bytes

Table 7. Alternating Loopback Activation Sequence

Sequence Function

Received Bytes

Active loopback

Four consecutive bytes of specified loopback code
X0101010 - OCU
X0101000 - CSU
X0101100 - DSU

Maintain loopback and test for bit errors

Data byte alternating with loopback code
Example:
XDDDDDD1/X0101010

Clear loopback

Four consecutive data bytes without alternating
loopback code

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Содержание Total Reach TROCU DP

Страница 1: ...tal Reach Office Channel Unit Data Port Installation and Maintenance Practice Document Number 61292006L1 5C CLEI D4D4AS1C_ _ October 2006 1292006 SYNC CRC LOOP OPEN QM DISC NO DSU NTWK LBK CUST LBK AP LBK ...

Страница 2: ...e Holder of this Document The contents of this document are current as of the date of publication ADTRAN reserves the right to change the contents without prior notice In no event will ADTRAN be liable for any special incidental or consequential damages or for commercial losses even if ADTRAN has been advised thereof as a result of issue of this document 901 Explorer Boulevard P O Box 140000 Hunts...

Страница 3: ...tation and is also used for emphasis This font indicates on screen messages and prompts This font indicates text to be typed exactly as shown This font indicates silk screen labels or other system label items This font is used for strong emphasis NOTE Notes inform the user of additional but essential information or features CAUTION Cautions inform the user of potential damage malfunction or disrup...

Страница 4: ...overviews on product features and functions while covering applications of ADTRAN product lines ADTRAN provides a variety of training options including customized training and courses taught at our facilities or at customer sites For inquiries concerning training contact ADTRAN Training Phone 800 615 1176 ext 7500 Training Fax 256 963 6700 Training Email training adtran com ...

Страница 5: ...alse Loopback Immunity 8 Protected Loopback 8 Testing 9 Dual Function LBK Button 10 Loopback LED Operation 10 TR OCU DP Bidirectional Loopback Support 10 Remote End Initiated LBK Tests 12 Latching Loopback Time out 13 Remote Provisioning and Diagnostics Control Protocol 13 Provisioning and Status 13 Deployment Guidelines 14 Maintenance 15 Troubleshooting 15 Appendix A Warranty A 1 Warranty and Cus...

Страница 6: ...gure 6 TR DDS R Remote End Initiated Loopback Local Loop 12 Figure 7 TR DDS R Remote End Initiated Loopback Customer Loop 12 Tables Table 1 Compliance Codes 3 Table 2 Front Panel LEDs 5 Table 3 Circuit Board DIP Switch SW1 Settings 7 Table 4 Protected Loopback Mode Requirement T1E1 2 99 007R1 Latching Loopback 8 Table 5 Cable Type and Temperature Loss Data at 13 3 kHz 9 Table 6 Latching Loopback A...

Страница 7: ... up to 64 kbps over a single copper pair Used in combination with the Total Reach Digital Data System All Rate DDS R termination unit TR DDS R the TR OCU DP can accommodate extended loop lengths eliminating the need for DDS repeaters Figure 1 illustrates the TR OCU DP front panel Figure 1 Total Reach Office Channel Unit Data Port 1292006 SYNC CRC LOOP OPEN QM DISC NO DSU NTWK LBK CUST LBK AP LBK ...

Страница 8: ...tream and the 2 wire metallic loop extending to the customer premises The TR OCU DP span powers the remote TR DDS R located at the customer premises The TR DDS R converts the 2 wire signal to the traditional 4 wire Alternate Mark Inversion AMI signal for transmission to the customer Features Two wire deployment Repeaterless operation Bridged tap tolerant Span power for remote TR DDS R termination ...

Страница 9: ...00 mA at 48 VDC This device complies with Part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference 2 This device must accept any interference received including interference that may cause undesired operation Changes or modifications not expressly approved by ADTRAN could void the user s authority to operate this equipment Table...

Страница 10: ...hat is electrically grounded Instructions for Installing the Module Installation assumes that the TR DDS R is already installed To install the TR OCU DP perform the following steps 1 Select DIP Switch SW1 options as required refer to Circuit Board DIP Switch SW1 on page 6 2 Select the desired data rate using the front panel DIP Switch refer to Circuit Board DIP Switch SW1 3 Hold the TR OCU DP by t...

Страница 11: ...sensitive Table 2 Front Panel LEDs Label Status Description SYNC z z Green Red Loop synchronized Loop not synchronized Red indicates that the is no synchronization between the TR OCU DP and the remote TR DDS R check for continuity load coils and other abnormal line conditions LOOP OPEN z Red No sealing current on local loop Check for continuity and proper Total Reach DDS termination at remote end ...

Страница 12: ...the switches to the right ON enables the function The functions of SW1 are shown in the Table 3 on page 7 Figure 3 Circuit Board DIP Switch SW1 Option Selection Front Panel DIP Switch The front panel DIP Switch see Figure 4 is used to set the data rate Pushing the switch to the left ON enables the function The Secondary Channel SC cannot be selected if circuit is SW56 or 64 kbps Only one data rate...

Страница 13: ...the D4 Channel Bank type 1 SW1 2 SLC 96 Mode I III Selects the SLC 96 Mode I III Bank type 1 SW1 3 SLC 96 Mode II Selects the SLC 96 Mode II Bank type 1 SW1 4 Zero Code Suppression On Off Ensures pulse density in T carrier data stream for rates other than 64 kbps Disabled for 64 kbps operation Zero Code Suppression is automatically disabled for 64 kbps clear channel operation SW1 5 Error Correctio...

Страница 14: ...Protected loopback prevents false latching loopbacks when the loopback sequence is embedded in customer payload data Test equipment should support T1E1 2 99 007R1 to perform testing at a data rate of 64 kbps when protected loopback is enabled Refer to Table 4 for the latching loopback sequence requirement when protected loopback is enabled Note Minimum of 35 TIP bytes required to disable establish...

Страница 15: ...orted Alternating loopbacks do not operate when the a data rate of 64 kbps is selected NOTE If a data rate of 64 kbps is selected the unit will only respond to latching loopback sequences Alternating sequences are not valid at this rate Table 5 Cable Type and Temperature Loss Data at 13 3 kHz Plastic Cable dB Loss kft Paper Cable dB Loss kft 19 Gauge PIC 0 F 19 Gauge PIC 70 F 19 Gauge PIC 120 F 0 ...

Страница 16: ... LED A flashing loopback LED indicates a loopback condition at the remote unit When a loopback toward the network is initiated the NTWK LBK LED is illuminated A loopback generated toward the customer illuminates the CUST LBK LED TR OCU DP Bidirectional Loopback Support The TR OCU DP will execute a bidirectional loopback when performing an OCU DP loopback at the TR OCU DP This allows a standard por...

Страница 17: ...U X1000001 NEI Minimum of 35 LSC bytes Prepare to loop send MAP code after 30 bytes Loopback enabled LBE X1010110 Minimum of 100 LBE bytes Activate loopback Far End voice FEV X1011010 Minimum of 32 FEV bytes Table 7 Alternating Loopback Activation Sequence Sequence Function Received Bytes Active loopback Four consecutive bytes of specified loopback code X0101010 OCU X0101000 CSU X0101100 DSU Maint...

Страница 18: ...BK LED on the TR DDS R indicates a loopback at the TR DDS R toward the customer equipment Pressing the TR DDS R LBK pushbutton a third time disables all current latching loopbacks If errors exist the loopbacks can help determine the source either the local loop or the TR DDS R During a remote end initiated loopback the Total Reach system transmits ASC 9Eh toward the network indicating an out of se...

Страница 19: ...ned set of in band DS0 byte sequences similar to the latching loopback sequence Commands issued through the test system are recognized by the individual channel unit which responds with the appropriate byte sequences These in band commands can be used to verify options by way of dialogs with REACT 2001 TPI 105 and TPI 108 109 test sets Unit CLEI serial number provisioning and performance informati...

Страница 20: ... The 50 dB AML limit includes 6 dB of signal margin to account for potential near end cross talk NEXT from other digital services that may be provisioned in the same binder group Loop length should not exceed 50 kft Bridged tap length should not exceed 12 kft Background noise level should not exceed 34 dBrn Impulse noise should not exceed 40 dBm 50 dBrn NOTE Measure noise with 50 kbit weighting ch...

Страница 21: ...ements must be made with a manually applied short and the Total Reach elements removed Power but no synchronization Check the cable for load coils Note the signal meter reading on the TR DDS R during power up and the synchronization process Refer to Signal Loss Indication on the applicable TR DDS R job aid for definitions Loop loss can be too great for synchronization to occur Ensure loop length i...

Страница 22: ...Total Reach Office Channel Unit Data Port Installation and Maintenance Practice 16 61292006L1 5C This page is intentionally blank ...

Страница 23: ...es support Customer and Product Service CAPS requests or further information ADTRAN Sales Pricing Availability 800 827 0807 ADTRAN Technical Support Pre Sales Applications Post Sales Technical Assistance 800 726 8663 Standard hours Monday Friday 7 a m 7 p m CST Emergency hours 7 days week 24 hours day ADTRAN Repair CAPS Return for Repair Upgrade 256 963 8722 Repair and Return Address Contact CAPS ...

Страница 24: ...Carrier Networks Division 901 Explorer Blvd Huntsville AL 35806 ...

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