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 17

7520-A2-GN10-10

December 1998

No repairs may be performed by the user. Should you experience difficulty with
this equipment, refer to 

Warranty, Sales, and Service Information

 on page 18.

For Digital Data Service (DDS) installations, inform the local telephone company
of the appropriate facility interface code for the service you desire.

DDS Facility

Interface Code

Data Rate (kbps)

04DU5-24

2.4

04DU5-48

4.8

04DU5-96

9.6

04DU5-19

19.2

04DU5-38

38.4

04DU5-56

56

04DU5-64

64

The DDS Service Order Number is 6.0Y. The jack configuration required is
RJ48S.

After the telephone company has installed the requested service and jack, you
can connect the DSU with the cable provided. An FCC-compliant telephone cord
and modular plug are provided with this equipment. This equipment is designed
to be connected to the telephone network or premises wiring using a compatible
modular jack that is Part 68 compliant.

Canada
Notice to Users of the Canadian Telephone Network

The Industry Canada label identifies certified equipment. This certification means
that the equipment meets telecommunications network protective, operational
and safety requirements as prescribed in the appropriate Terminal Equipment
Technical Requirements document(s). The Department does not guarantee the
equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The
equipment must also be installed using an acceptable method of connection. The
customer should be aware that compliance with the above conditions may not
prevent degradation of service in some situations.

Repairs to certified equipment should be coordinated by a representative
designated by the supplier. Any repairs or alterations made by the user to this
equipment, or equipment malfunctions, may give the telecommunications
company cause to request to disconnect the equipment.

Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone lines and internal metallic water pipe
system, if present, are connected together. This precaution may be particularly
important in rural areas.

 

Summary of Contents for 7520 DSU

Page 1: ...s Complete documentation for this product is available at www paradyne com Select Service Support Technical Manuals Subrate Digital Access Devices Select the following document 7520 A2 GB20 Model 7520...

Page 2: ...tor on one end and an MS34 socket connector on the other end A DTE with a DB25 connector to the 25 pin DTE port Standard straight through EIA 232 cable with DB25 plug connectors on both ends Contact y...

Page 3: ...3 7520 A2 GN10 10 December 1998 Installing Your DSU 97 15781 RJ48S Jack NETW ORK TERMIN AL MANAGEMENT POW ER D T E DTE EIA 232 Terminal Connection AC Adapter Network Connection DTE Connection or V 35...

Page 4: ...power transformer into an ac outlet D T E TERMINAL DTE NETWORK POWER 97 15782 Power Jack Connecting the Terminal Port to an Async Terminal Procedure 1 Insert the 25 pin end of the EIA 232 cable into t...

Page 5: ...ert one end of 25 pin EIA 232 cable into the DB25 DTE port 2 Insert the other end of the cable into the appropriate connector on your DTE D T E TERMINAL DTE NETWORK POWER 97 15784 DTE DTE Port or Conn...

Page 6: ...X D 1 0 3 R X D 1 0 4 R T S 1 0 5 D T R 1 0 8 7520 DSU Verify that the User Interface Idle screen is displayed on the terminal or PC Press the Enter key Verify that the Main Menu appears main Device N...

Page 7: ...ame screen are null until you enter values Allowable values are any printable ASCII character Saving Configuration Options When changes are made to the configuration options the changes must be saved...

Page 8: ...uration Edit Display System Network Data Port Terminal Port MAIN MENU Status Test Configuration Control 497 15239 Load Configuration From System Options Menu For System Options refer to Table 1 To acc...

Page 9: ...s the unit is running diagnostic tests During the tests the timing source is the internal clock This setting should be used for a LADS secondary timing unit LADS Line Rate Kbps Possible Settings 2 4 4...

Page 10: ...loopback Disable DSU will not respond to a DSU loopback initiated by the network Data Scrambling 64K CC Possible Settings Enable Disable Default Setting Disable Determines whether data scrambling is...

Page 11: ...e Circuit CT103 Transmitted Data TXD The feature should be enabled when data errors are occurring due to long cable lengths Enable The DSU supplied clock is phase inverted with respect to the transmit...

Page 12: ...RTS Forced On Circuit Assurance Short Delay Medium Delay Long Delay Default Setting Standard Specifies the operation of the Interchange Circuit CT106 Clear to Send CTS which is an output from the DSU...

Page 13: ...of the Interchange Circuit CT107 Data Set Ready DSR which is an output from the DSU Standard DSR is always asserted except when a DDS facility alarm is reported or the DSU is in Test mode Forced On DS...

Page 14: ...ic logoff of an ATI session through the Terminal Port When the session is closed User Interface Idle appears on the screen and the unit toggles the Terminal port DSR lead Enable The ATI session termin...

Page 15: ...7 Input power to this product must be provided by one of the following 1 a UL Listed CSA certified power source with a Class 2 or Limited Power Source LPS output for use in North America or 2 a certi...

Page 16: ...sing equipment regulations Cet appareil num rique de la classe A respecte toutes les exigences du r glement sur le mat rial brouilleur du Canada Government Requirements Certain governments require tha...

Page 17: ...d equipment This certification means that the equipment meets telecommunications network protective operational and safety requirements as prescribed in the appropriate Terminal Equipment Technical Re...

Page 18: ...stributor directly for any help needed For additional information concerning warranty sales service repair installation documentation training distributor locations or Paradyne worldwide office locati...

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