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USER
MANUAL

MODEL 2720/B and 2720/C
Series

NetLink-T1™

T1/Fractional T1 CSU/DSU

SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http://www.patton.com

Part# 07M2720-UM
Doc# 08615U2-001,
Rev. B
Revised 10/26/06

An ISO-9001

Certified Company

Содержание NetLink 2720/B

Страница 1: ...20 B and 2720 C Series NetLink T1 T1 Fractional T1 CSU DSU SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M2720 UM Doc 08615U2 001 Rev B Revised 10 26 06 An ISO 90...

Страница 2: ...ent 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 profi...

Страница 3: ...r and FCC Registration number of the CSU 2 Your telephone company may make changes to its facilities equip ment operations or procedures that could affect the proper functioning of your equipment The...

Страница 4: ...or Internal DIP Switches Six Easy to Read LED Indicators Monitor Data Diagnostics Internal External or Network Clocking Also Operates as a High Speed Point to Point Modem Made in USA 2 2 GENERAL PROD...

Страница 5: ...rd in which twelve frames make up a superframe All signaling and synchronization are done in band Extended Superframe ESF Extended Superframe as speci fied in AT T TR 54016 consists of twenty four 24...

Страница 6: ...S1 2 Tx Clock Select On Transmit data accept with respect to the transmit clock from the 2720 Off Transmit data accept with respect to the external clock from the DTE Switch S2 6 and S2 7 Clock Mode...

Страница 7: ...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...

Страница 8: ...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 Patton Electronics Menu Management Enter Password _ 3 2...

Страница 9: ...on you can save the changes per manently by executing the Save Changes command This will update the unit s configuration and save all the parameters to permanent memory Logoff For security log off the...

Страница 10: ...is a 64 kb s portion of the DS1 frame or super frame to 56 kb s and forcing a pulse in the last data bit to ensure a minimum pulse density in the signal If you must use AMI with a DS0 data rate of 64...

Страница 11: ...ANSI developed standard see ANSI T1 403 1995 Network to Customer Installation DS1 Metallic Interface uses the FDL to send and receive one second Performance Report Messages PRMs The messages con tain...

Страница 12: ...ions paragraph 3 2 4 on pages 32 and 33 Default Config Source Switch default Option EEPROM Switch The Model 2720 can be initialized via the configuration in the on board permanent memory EEPROM or via...

Страница 13: ...e No user controlled loopbacks are active TxPr The Model 2720 is sending the preparatory phase pattern lasting for approximately 2 5 seconds WtAk The Model 2720 is waiting for an acknowledgement from...

Страница 14: ...hat you may see if the Model 2720 is not connected at all or is in a loss of signal condition Here are the eight status messages Excessive zeros EXZ i e lack of pulses detected This condition may occu...

Страница 15: ...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...

Страница 16: ...thout user intervention Note Loop timeout settings are efective only for VT 100 initiated Loops Loops initiated via DTE interface or front panel switch are not affected therefore they must be terminat...

Страница 17: ...ies front panel T1 Link Solid green indicates that the end to end TI link is up Signifying that the link is active The TI link LED is off when the link is down TD When the unit sends a one the TD LED...

Страница 18: ...unication links These tests can be acti vated via the software control port See Section 3 2 3 System Diagnostics via signals on the serial port interface or the front panel switch 5 2 1 Operating Loca...

Страница 19: ...ault and the Local Line Loopback test was successful for both NetLink s you may have a problem with the twisted pair line connection 5 2 3 CSU Loop The NetLink T1 also responds to central office initi...

Страница 20: ...witch to either PAT or PAT E Test Pattern with Error Injection c 38 APPENDIX A PATTON NETLINK T1 MODEL 2720 SPECIFICATIONS WAN Speed 1 544 Mbps WAN Connection RJ 48C Nominal Impedance 100 Ohms DTE Int...

Страница 21: ...an option Use twisted pair wire with a capacitance of 20pf ft or less Avoid twisted pair wire thinner than 26 AWG i e avoid AWG numbers higher than 26 Use of twisted pair with a resistance greater tha...

Страница 22: ...2720 2 Transmit Data To 2720 7 Ground APPENDIX D continued PATTON ELECTRONICS MODEL 2720 INTERFACE PIN ASSIGNMENT M 34 Connector Terminal Interface Pin Signal A GND Earth Ground Shield B SGND Signal...

Страница 23: ...Carrier Detect B DCE Source 11 XTC External Transmitter Clock B DTE Source 12 TC Transmitter Clock B DTE Source 13 CTS Clear to Send B DCE Source 14 TD Transmit Data A DTE Source 15 TC Transmitter Cl...