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TABLE OF CONTENTS

Section

Page

1.0 Warranty Information .............................................................2

1.1 Warranty Statement
1.2 Radio and TV Interference
1.3  Equipment Attachment Limitations
1.4  FCC Compliance
1.5 Service Information

2.0 General Information...............................................................4

2.1 Features
2.2 General Product Description

3.0 Configuration .........................................................................5

3.1 DIP Switch Configuration
3.2  Software Configuration

4.0 Installation ..........................................................................32

4.1 The Model 1001R14 Rack Chassis
4.2 Installing the Interface Driver Board
4.3 Installing the 2720 Into the Rack Chassis
4.4 Connecting to a DTE Device
4.5 Connecting to a DCE Device
4.6 Connecting the T1 Interface

5.0 Operation .............................................................................36

5.1 LED Descriptions
5.2 Loop (V.54 & Telco) Diagnostics
5.3  Bit Error Rate (V.52) Diagnostics

Appendix A - Specifications ........................................................41
Appendix B - Cable Recommendations......................................42
Appendix C - Factory Replacement Parts and Accessories ......43
Appendix D - T1 Interface Pin Assignments ..............................44
Appendix E - DTE Interface Pin Assignments ............................45

1.0  WARRANTY INFORMATION 

Thank you for your purchase of this Patton Electronics product.  This

product has been thoroughly inspected and tested and is warranted for One
Year parts and labor. If any questions or problems arise during installation
or use of this product, please do not hesitate to contact Patton Electronics
Technical Support at (301) 975-1007.

1.1  WARRANTY STATEMENT

Patton Electronics warrants all Model 2720 Series components to be

free from defects, and will—at our option—repair or replace the product
should it fail within one year from the first date of shipment. This warranty is
limited to defects in workmanship or materials, and does not cover cus-
tomer damage, abuse, or unauthorized modification. This product contains
no serviceable parts; therefore you should not attempt to modify the unit in
any way. If this product fails or does not perform as warranted, your sole
recourse shall be repair or replacement as described above. Under no con-
dition shall Patton Electronics be liable for any damages incurred by the
use of this product. These damages include, but are not limited to, the fol-
lowing: lost profits, lost savings and incidental or consequential damages
arising from the use of or inability to use this product. Patton Electronics
specifically disclaims all other warranties, expressed or implied, and the
installation or use of this product shall be deemed an acceptance of these
terms. In the event that you detect intermittent or continuous product mal-
function due to nearby high power transmitting radio frequency equipment,
use only data cables with an external outer shield bonded to a metal or
metalized connector.

1.2  RADIO AND TV INTERFERENCE

The NetLink-T1™ Model 2720 Series generates and uses radio fre-

quency energy, and if not installed and used properly—that is, in strict
accordance with the manufacturer's instructions—may cause interference to
radio and television reception. The Model 2720 Series has been tested and
found to comply with the limits for a Class A computing device in accor-
dance with the specifications in Subpart J of Part 15 of FCC rules, which
are designed to provide reasonable protection from such interference in a
commercial installation. However, there is no guarantee that interference
will not occur in a particular installation. If the Model 2720 Series causes
interference to radio or television reception, which can be determined by
disconnecting the cables, try to correct the interference by one or more of
the following measures: moving the computing equipment away from the
receiver, re-orienting the receiving antenna, and/or plugging the receiving
equipment into a different AC outlet (such that the computing equipment
and receiver are on different branches).

WARNING!

This device is not intended to be con-

nected to the public telephone network in Europe.

Summary of Contents for NetLink 2720 Series

Page 1: ...I T1 Fractional T1 CSU DSU with Ethernet Bridging SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M2720 I A Doc 086181UA Revised 04 11 01 C E R T I F I E D An ISO...

Page 2: ...m as warranted your sole recourse shall be repair or replacement as described above Under no con dition shall Patton Electronics be liable for any damages incurred by the use of this product These dam...

Page 3: ...ct you in advance If you elect to do so you have the right to file a complaint with the FCC If you have any trouble operating the Model 2720 Series please contact Patton Electronics Technical Support...

Page 4: ...atures that make sys tem setup easy The Ethernet Bridge in this unit requires no configura tion at all The NetLink T1 provides T1 terminations over a modular RJ 48C jack and comply with jitter toleran...

Page 5: ...al Cisco router with a serial interface configured as a PPP Half Bridge The router serial interface uses a remote device that supports PPP bridging to function as a node on the remote Ethernet network...

Page 6: ...s On 64 kbps 3 1 1 Switch S2 The table below shows the default configurations for Switch S2 A description of all S2 options follows this table Switches S2 1 S2 2 and S2 3 Use Switches S2 1 S2 2 and S2...

Page 7: ...ck your clock mode settings and Tx Clock Invert S1 3 settings Switch S2 8 Reserved 3 1 2 Switch S1 The chart below shows the default configurations for Switch S1 A description of all S1 options follow...

Page 8: ...operating parameters Follow the instructions below to configure the Model 2720 using the software selections 1 Plug the 9 pin male end of the cable to your terminal or com puter s DB 9 serial port and...

Page 9: ...each letter you type The maximum length of the password which can include any character the terminal can generate is 16 characters 6 The Model 2720 will then display the Main Menu screen 3 2 1 Introd...

Page 10: ...isfaction you can save the changes permanently by exe cuting the Save Changes command This will update the unit s configuration and save all the parameters to permanent mem ory Logoff For security log...

Page 11: ...ring of the network interface performance over the Facility Data Link FDL AT T TR 62411 says the Extended Superframe Format extends the DS1 superframe structure from 12 to 24 frames for a total of 463...

Page 12: ...PRMs The messages con tain the NI performance over the last four seconds Thus up to three consecutive messages may be lost without loss of information It is available only with ESF When ANSI T1 403 is...

Page 13: ...the line The duration of the loopback is limited by the loopback timeout setting See Unit Operations paragraph 3 2 4 on pages 32 and 33 Default Config Source Switch default Option EEPROM Switch The Mo...

Page 14: ...al DTE The Model 2720 Initiating a RL can be in one of the following states Idle No user controlled loopbacks are active TxPr The Model 2720 is sending the preparatory phase pattern lasting for approx...

Page 15: ...the eight status messages Excessive zeros EXZ i e lack of pulses detected This condition may occur if the unit is not connected to the network in which case the EXZ is displayed continuously If EXZ co...

Page 16: ...hot of the link performance To clear all counters press the Backspace key If your keyboard does not have this key you can press a two key combi nation to affect the same result Hold down the Ctrl key...

Page 17: ...n minutes 00 30 thirty minutes default setting 00 45 forty five minutes 01 00 one hour 01 30 90 minutes 02 00 two hours 03 00 three hours NEVER forever the unit will remain in loopback without user in...

Page 18: ...Port 10Base T Hub RJ 45 Pin No RJ 45 Pin No 1 TD 1 RD 2 TD 2 RD 3 RD 3 TD 6 RD 6 TD 4 3 T1 FT1 INTERFACE CONNECTION The Network Line Interface Line is an eight position keyed modu lar jack configured...

Page 19: ...e s not octet aligned 7 pulses WAN receive frame s aborted 8 pulses Detected WAN receive frame s with CRC 9 pulses Detected LAN receive frame s too large 10 pulses Detected LAN receive frame s not oct...

Page 20: ...RL The Remote Digital Loopback RL test checks the performance of both the local and remote NetLink T1 as well as the communication link between them Any characters sent to the remote NetLink T1 in thi...

Page 21: ...h the LAL and RDL tests to evaluate the unit s and the communication links When a 511 2047 or QRSS test is invoked the NetLink T1 generates a pseudo random bit pattern of 511 bits 2047 bits or 2 20 bi...

Page 22: ...47 QRSS Standards AT T TR62411 TR54016 ANSI T1 403 Power Supply 120VAC 60 Hz to 5VDC 300mA wall mount transformer or UI 100 240VAC 50 60 Hz to 5 VDC 2A desktop trans former Dimensions 3 5 L x 2 1 W x...

Page 23: ...SSIGNMENT RJ 48C T1 DS0 Network Interface Female Modular Jack Pin Signal 1 RX Data TIP 1 2 RX Data RING1 4 TX Data TIP 5 TX Data RING TRS Jack RS 232 Control Port Pin Signal Direction Tip Tx Data From...

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