Patton electronic 2701/I manuale d’uso

USER MANUAL MODEL 2701/I G.703/G.704 NTU with 10Base-T Ethernet Interface SALES OFFICE (301) 975-1000 TECHNICAL SUPPOR T (301) 975-1007 P ar t# 07M2701I-UM Doc# 08609U2-001 Rev . I Revised 2/18/08 An ISO-9001Cer tified Company Important —This is a Class A device and is intended for use in a light industrial environ- ment. It is not intended nor [...]

2 CONTENTS 1.0 Warranty & Compliance Information ........................................ 4 1.1 Compliance ................................................................................... 4 EMC Compliance.......................................................................... 4 Safety Compliance: ...........................................[...]

3 A Specifications ........................................................................... 26 A.1 Network Data Rate ...................................................................... 26 A.2 Network Connector ..................................................................... 26 A.3 Nominal Impedance .......................................[...]

4 1.0 WARRANTY & COMPLIANCE INFORMATION P atton Electronics warr ants all Model 2701/I components to be free from def ects, and will—at our option—repair or replace the product should it f ail within one year from the first date of shipment. This warranty is limited to def ects in workmanship or mater ials, and does not cov er customer dam[...]

5 1.2 CE NOTICE W e cer tify that the apparatus identified in this document conf orms to the requirements of Council Directive 1999/5/EC on the appro ximation of the laws of the member states relating to Radio and T elecommunication T er- minal Equipment and the mutual recognition of their conf ormity . The saf ety advice in the documentation acco[...]

6 1.5 SAFETY WHEN WORKING WITH ELECTRICITY • This device contains no user serviceable parts. The equipment shall be returned to Patton Electronics for repairs, or repaired by qualified service personnel. • The external power adapter shall be a listed Limited Power Source. Ensure that the power cable used meets all applicable standards for the [...]

7 2.0 GENERAL INFORMATION Thank you f or y our purchase of this P atton Electronics product. This product has been thoroughly inspected and tested and is warranted f or One Y ear par ts and labor . If any questions or prob lems arise during installation or use of this product, please do not hesitate to contact P at- ton Electronics T echnical Suppo[...]

8 The Model 2701/I is a 10Base-T bridge that operates ov er G.703/G.704 lines. It uses MAC learning and f orwarding to pro vide seamless LAN-to- LAN connectivity . As a result, corporate enter prises can connect their ser vers to a pair of NTUs and automatically f orward data pack ets that are meant f or the remote network. Local packets are filte[...]

9 3.0 PPP OPERATIONAL BACKGROUND PPP is a protocol used f or multi-ple x ed transport over a point-to-point link. PPP operates on all full duplex media, and is a symmetric peer-to- peer protocol, which can be broken into three main components: 1. A standard method to encapsulate datagrams o v er serial links; 2. A Link Control Protocol (LCP) to est[...]

10 Figure 1. Cisco router with serial interface, configured as PPP Half Bridge. F or e xample, the customer site is assigned the addresses 192.168.1.0/ 24 through 192.168.1.1/24. The address 192.168.1.1/24 is also the def ault gatew a y f or the remote network. The abov e settings remov e any routing/f orwarding intelligence from the CPE. The asso[...]

11 4.0 CONFIGURATION The Model 2701/I f eatures configuration capability via hardware DIP s witches. This section describes all possible DIP s witch configurations of the Model 2701/I. 4.1 DIP SWITCH CONFIGURATION The Model 2701/I has two sets of internal DIP switches that allo w config- uration f or a wide range of applications . The sets of s [...]

12 Switch SW1 A detailed description of each switch (SW1-1 through SW1-5) setting f ol- lows the summary table below: Switch SW-1 through SW1-5. Use Switches SW1-5 to set the DTE data rate. SW1 SW2 SW3 SW4 SW5 Speed On On On On On 64 kbps Off On On On On 128 kbps On Off On On On 192 kbps Off Off On On On 256 kbps On On Off On On 320 kbps Off On Off[...]

13 Note When the data rate is set to 2.048Mb/s, the unit is f orced into G.703 mode, and it transmits user data on all 32 time-lots . There is no framing inf ormation; theref ore, the CRC4 MF (SW2-2) switch is ignored. In all other rate settings, the unit emplo ys G.704 framing; TS0 is reserved f or signaling. SW1-6 and SW1-7 Clock Modes. Network C[...]

14 Switch SW2 A detailed description of each switch (SW1-1 through SW1-5) setting f ol- lows the summary table below: Switch SW2-1 Line Coding: HDB3 (default). Use Switch SW2-1 to control the Network Line Coding options. Set these options to be the same as the Line Coding given to y ou b y your Ser vice Provider . If y ou are using two Model 2701/I[...]

15 cause problems , since the NTU receiving the signal relies on the signal to recov er the 2.048 Mb/s cloc k. If you m ust use AMI, you should ensure that the data terminal equipment connected to the unit provides a minimally accept- able pulse density . For this reason, there are adv antages to using HDB3 instead. AMI coding does not inherently a[...]

16 V .54 loop when Remote Loop is selected b y the front panel s witches. If set to CSU , the Model 2701 will initiate a CSU loop when Remote Loop is selected by the front panel s witches . Switch SW2-5 Front Panel Switches. As the F ront P anel Switches may be inadv er tently toggled, or in the e vent that the end-user ma y not need to use the swi[...]

17 5.0 INSTALLATION Once the Model 2701/I is properly configured, it is ready to connect to the G.703/G.704 interf ace, to the Ethernet por t, and to the power source. This section describes how to make these connections . 5.1 CONNECTING TO THE G.703 NETWORK The P o wer , G.703/G.704 and Ether net Line connections are located on the rear panel of [...]

18 When using the 75 Ohm interf ace, jumper straps JP2, JP6, and JP7 must be installed ov er the jumpers. The jumpers are located next to the BNC connectors. Refer to the f ollowing section to open the case. Opening the Case Open the case by inserting a screwdriver into the slots and twist the screwdriv er head slightly . The top half of the case w[...]

19 5.2 CONNECTING THE 10BASE-T ETHERNET PORT TO A PC (DTE) Figure 8. Connecting the 10Base-T Ethernet Port to a PC The 10Base-T interf ace is configured as DTE (Data T er minal Equip- ment). If the Model 2701/I is to to connect to another DTE device such as a 10Base-T network interface card, construct a 10Base-T crossov er cable and connect the wi[...]

20 5.4 POWER CONNECTION Universal A C Po wer (100–240 V A C) The Model 2701/I uses a 5VDC , 2A universal input 100-240V AC , power supply (center pin is +5V). The universal input po wer supply has a male IEC-320 power entry connector . This po wer supply connects to the Model 2701/I by means of a barrel jac k on the rear panel. Many interna- tion[...]

21 6.0 OPERATION When the Model 2701/I has been properly configured and installed, it should operate transparently . This sections describes power-up , LED status monitors, and the b uilt-in loopback test modes . 6.1 POWER-UP Bef ore applying power to the Model 2701/I, please read section 5.4, “P o wer Connection” on page 20 and ensure that th[...]

22 10BT Link(Active Green) Solid green indicates that the 10BaseT Ethernet interface has detected a valid SQE heartbeat, signifying a valid 10BaseT connection. Status Blinks yellow from one to eleven times to indicate system sta- tus. Each pulse pattern is separated by a 2 second “off” period. Greater pulse patterns have higher priority (buffer[...]

23 6.3 LOOP (V.54 & TELCO) DIAGNOSTICS The Model 2701/I off ers three V .54 loop diagnostics. Use these diagnos- tics to test the NTU and any communication links . These tests can be activated via the front panel s witches. Operating Local Loopback (LL) The Local Loopback (LL) test chec ks the operation of the local Model 2701/I, and is perf or[...]

24 Operating Remote Digital Loopback (RL) The Remote Digital Loopback (RL) test chec ks the perf ormance of both the local and remote NetLink-E1™, as well as the communication link between them. Any characters sent to the remote NetLink-E1™ in this test mode will be returned back to the originating device. Figure 14. Remote Loop in a Network Ex[...]

25 down” command is implemented by the pattern “100” in the data stream f or a minimum of 5 seconds. The NetLink 2701/I will respond to Universal Loopbac k De-activ ate to clear all central office loops. Using the V .52 (BER) T est Pattern Generator T o use the V .52 BER tests in conjunction with the Remote Digital Loop- back tests (or with [...]

26 APPENDIX A SPECIFICATIONS A.1 NETWORK DATA RATE 2.048 Mbps A.2 NETWORK CONNECTOR RJ-48C/Dual Coax BNC A.3 NOMINAL IMPEDANCE 75/120 ohm A.4 LINE CODING Selectable AMI or HDB3 A.5 LINE FRAMING G.703 (Unframed) or G.704/G.732 (F ramed) A.6 CRC-4 MULTIFRAMING Selectable On or Off A.7 CLOCKING Internal or Networ k (Receive Reco v er) A.8 TIME SLOT RA[...]

27 A.12 HUMIDITY Up to 90% non-condensing A.13 TEMPERATURE 0 to 50°C (32 to 122°F) A.14 DIMENSIONS Plastic Case – 9.0L x 5.3W x 2.0H cm (3.5L x 2.1W x 0.78H in.) Metal Case – 3.2L x 13.8W x 14.6H cm (1.25L x 5.43W x 5.75H in)[...]

28 APPENDIX B ETHERNET 10BASE-T SPECIFICATIONS B.1 DTE INTERFACE 10Base-T on RJ-45F B.2 DTE DATA RATES 10Mbps B.3 LAN CONNECTION RJ-45, 10Base-T , 802.3 Ethernet B.4 PROTOCOL PPP (RFC 1661) with Bridging Control (RFC 1638) B.5 MAC ADDRESS TABLE SIZE 4096 entries B.6 MAC ADDRESS AGING MA C addresses deleted after 8 minutes of inactivity B.7 FRAME BU[...]

29 APPENDIX C F ACTOR Y REPLACEMENT PARTS AND ACCESSOR IES P atton Model # Description 2701/B G.703/G.704 NTU with RS-530 interf ace 2701/C G.703/G.704 NTU with a V .35 interf ace 2701/D G.703/G.704 NTU with an X.21 interf ace 2701/I G.703/G.704 NTU w/ 10Base-T EN interf ace 08055DCUI Universal Input P o wer Supply 07M2701 User Manual[...]

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