background image

7

2.3  SUPPORTED APPLICATION

The Model 2711 CSU/DSU is supplies the interface between the

telephone company and customer premises equipment (CPE) such as
a router.  The 2711 can also be used as a high-speed short haul
modem for campus applications.  

2.3.1  The 2711 as the Interface between the Telco and CPE

The Model 2711 Series provides the interface between the tele-

phone company and customer equipment, such as a router or switch
(See below).  

2.3.2  The 2711 as a High-Speed Short Range Modem

The Model 2711 Series can also be installed into high-speed cam-

pus applications.  In this application, a pair of Model 2711 Series units
operate as short range modems (See below).

RXD

LOS

ALM

ERR

T/L

PWR

TXD

Model 2700

RXD

LOS

ALM

ERR

T/L

PWR

TXD

Model 2700

Model 2711

Model 2711s

Router

Bridge/Router

Bridge/Router

1.544Mbps

or nx56/64

1.544MBps

or nx56/64

LAN

LAN

LAN

T1

Network

8

3.0  CONFIGURATION

Before placing the Model 2711 into service, the unit must be con-

figured to match both the DTE and Network interface parameters.
Configuration may be accomplished using pc board mounted DIP
Switches or via software using the RS-232 control port.  

3.1  CONFIGURATION USING DIP SWITCHES

Configure the Model 2711 using a DIP switch package located on

the bottom side of the printed circuit board (See Figure 1, below).  

The Model 2711 DIP switches can be configured as either “On” or

“Off”.  Figure 2 (below) shows the orientation of the DIP switches with
respect to ON/OFF positions.  

Figure 1. Model 2711 Series bottom view, showing location of DIP switches

ON

1 2 3 4 5 6 7 8

DIP Switches SW1 & SW2

1

2

3

4

5

6

7

8

ON

OFF

ON

Figure 2.

Close up of DIP switches showing ON/OFF positions. 

ON

OFF

1

2

3

4

5

6

7

8

ON

1

2

3

4

5

6

7

8

ON

SW2

SW1

Содержание Model 2711

Страница 1: ...l T1 CSU DSU SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M2711 UM Doc 08606U2 001 Rev D Revised 10 26 06 C E R T I F I E D An ISO 9001 Certified Company Copyrig...

Страница 2: ...first date of shipment This warranty is limited to defects in workmanship or materi als and does not cover customer damage abuse or unauthorized modification This product contains no serviceable parts...

Страница 3: ...t line power 04DU9 BN 6 0N RJ48C 1 544 Mbps SF and B8ZS without line power 04DU9 DN 6 0N RJ48C 1 544 Mbps ANSI ESF without line power 04DU9 1KN 6 0N RJ48C 1 544 Mbps ANSI ESF and B8ZS w o line power 0...

Страница 4: ...to 1 536 Mbps Seven Easy to Read LED Indicators Monitor Data Diagnostics Internal or Receive Loopback Clocking Also Works as a High Speed Point to Point Modem Compact Size Plugs Directly into a Router...

Страница 5: ...11 Model 2711s Router Bridge Router Bridge Router 1 544Mbps or nx56 64 1 544MBps or nx56 64 LAN LAN LAN T1 Network 8 3 0 CONFIGURATION Before placing the Model 2711 into service the unit must be con f...

Страница 6: ...SW2 2 SW2 1 Clocking Mode Don t Care Off Network Don t Care On Internal Don t Care Off Network Off On Internal On On External CLOCKING MODE Framed Mode ESF D4 Unframed Mode 10 Switches SW1 8 SW1 7 SW1...

Страница 7: ...O controls the pulse shape and attenuation of the signal sent to the net work The amount of LBO depends on the distance to the nearest repeater The telephone company providing the T1 service will advi...

Страница 8: ...ts of twenty four 24 T1 frames The framing bits are now used for framing CRC and the Facility Data Link FDL The FDL allows maintenance messages and information to be passed between the 2711 and the Ce...

Страница 9: ...with 5VDC 300mA to Pin KK See Appendix D for more information DC Power Supply The 36 60 VDC DC to DC adapter is supplied with the DC version of the Model 2711 The black and red leads plug into a DC s...

Страница 10: ...ll flash briefly once a second Framing Mismatch the ERR LED flashes briefly once a second when framing modes are mismatched Loss of Signal When there is no signal at the network interface the ERR LED...

Страница 11: ...ODEL 2711 SERIES CABLE RECOMMENDATIONS The Patton Model 2711 Series operates at frequencies of 20kHz or less and has been performance tested by Patton technicians using twisted pair cable with the fol...

Страница 12: ...120 T1 Nx64 CSU DSU M 34 Male 120VAC 2711 CM UI T1 CSU DSU V 35 M 34 Male UI 07M2711 User Manual 22 APPENDIX D PATTON MODEL 2711 SERIES INTERFACE PIN ASSIGNMENT RJ 48C T1 DS0 Network Interface RJ 48S...

Страница 13: ...TD Transmit Data DTE Source R RD Receive Data DCE Source S TD Transmit Data DTE Source T RD Receive Data DCE Source U XTC Transmit Clock DTE Source V RC Receive Clock DCE Sourcce W XTC Transmit Clock...

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