USER MANUAL MODEL 2707/I G.
1.0 1.1 1.2 1.3 Warranty Information .................................................................. 4 Radio and TV Interference............................................................ 4 CE Notice...................................................................................... 4 Service.......................................................................................... 4 2.0 2.1 2.2 General Information..................................................................... 6 Features......
B.9 Diagnostics ......................................................................21 B.10Indicators ........................................................................21 B.11Configuration ..................................................................21 B.12Power Supply ..................................................................22 B.13Humidity ...........................................................................22 B.14Temperature .....................................................
1.0 WARRANTY INFORMATION Patton Electronics warrants all Model 2707/I 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 customer damage, abuse, or unauthorized modification. If this product fails or does not perform as warranted, your sole recourse shall be repair or replacement as described above.
als Authorization number on the outside of the shipping container. This number may be obtained from Patton Electronics Technical Services at: • Tel: +1 (301) 975-1007 • Email: support@patton.com • URL: http://www.patton.com Note Packages received without an RMA number will not be accepted. This device is not intended to be connected to the public telephone network.
2.0 GENERAL 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. 2.1 FEATURES • Terminates G.703 E1 service • Available in low-cost standalone or rack-mountable versions • 2.
3.0 PPP OPERATIONAL BACKGROUND PPP is a protocol used for multi-plexed transport over a point-to-point link.
Model 2707/I Model 2707/C Router E1 Internet Ethernet LAN Customer’s Site Service Provider’s Network Figure 1. Cisco router with serial interface, configured as PPP Half Bridge. Figure 1 shows a typical Cisco router with a serial interface configured as a PPP Half Bridge. The router serial interface connects to the WAN via a 2707/C (V.35) E1 NTU and to the remote 2707/I with support for PPP bridging. The 2707/I functions as a node on the remote Ethernet network.
4.0 CONFIGURATION The Model 2707/I features configuration capability via hardware DIP switches. This section describes all possible DIP switch configurations of the Model 2707/I. 4.1 DIP SWITCH CONFIGURATIONS The Model 2707/I has an internal DIP switch that enables configuration for a wide range of applications. The DIP switch is accessed from the underside. Figure 2 shows the location of the DIP switches on the bottom of the printed circuit board. Front S1 Rear Figure 2.
Switch S1 settings Table 1 shows the settings for DIP switch S1-1 thru S1-8. Table 1: Switch S1 settings Switch Description S1-1 Line Coding S1-2 Line Loopback (toward E1 line) Setting Off = HDB3 On = AMI Off = LLB disabled On = LLB enabled Note The Model 2707/I, when in line loopback mode, will loop the network line and return any trafic received on the E1 line to the sending device at the remote end.
The receiver recognizes these special violations and decodes them as zeros. This method enables the network to meet minimum pulse density requirements. Unless AMI is required in your application, HDB3 should be used whenever possible. • AMI. Alternate Mark Inversion defines a pulse as a "mark,” a binary one, as opposed to a zero. In an E1 network connection, signals are transmitted as a sequence of ones and zeros. Ones are sent as pulses, and zeros are sent as spaces, i.e., no pulse.
5.0 INSTALLATION Once the Model 2707/I is properly configured, it is ready to connect to the G.703 interface, to the Ethernet port, and to the power source. This section describes how to make these connections. 5.1 CONNECTING TO THE G.703 NETWORK AND ETHERNET LAN This section describes installing the G.703 (75-ohm and 120-ohm), Ethernet LAN, and power connections (shown in Figure 4).
Connecting Dual Coaxial Cable (75 ohm) to the G.703 Network Refer to Figure 5 to make the proper connections. DataTO Network TX RX Data FROM Network Figure 5. Rear panel, showing location of connectors Note The outer conductor of the coax cables are isolated from system earth ground. When using the 75-ohm interface, jumper straps JP2, JP5, JP6, and JP7 must be installed over the jumpers. The jumpers are located next to the BNC connectors. Do the following to configure the jumpers: 1.
Connecting the Twisted Pair (120 ohm) to the G.703 Network Refer to the pinout and signals chart in Figure 6 to connect the 120-ohm G.703 network channel. RJ-45 Cable (8-Wire) G.703 NETWORK SIGNAL 2707/I SIGNAL PIN# RX+ RX- TX+ TX- 5 4 TX+ TX- RX+ RX- 1 2 Shield Shield 3 6 Shield Shield (No Connection) 8 (No Connection) 7 (No Connection) 6 (TX+) 5 (TX-) 4 (No Connection) 3 (RX-) 2 (RX+) 1 8 7 6 5 4 3 2 1 Figure 6. G.703 120-ohm connection.
10Base-T DTE RJ-45 Pin No. 1 (TD+) 2 (TD-) 10Base-T Port RJ-45 Pin No. 1 (TD+) 2 (TD-) 3 (RD+) 6 (RD-) 3 (RD+) 6 (RD-) Figure 8. 10Base-T cross-over cable connection Connecting the 10Base-T Ethernet Port to a Hub The 10Base-T interface is configured as DTE (data terminal equipment), just like a 10Base-T network interface card in a PC. Therefore, it “expects” to connect to a 10Base-T Hub using a straight-through RJ-45 cable.
DC Power. The 36–60 VDC DC-to-DC adapter supplied with the DC version of the Model 2707/I plugs in a DC source (nominal 48 VDC) and plugs into the barrel power supply jack on the rear of the 2707/I. Refer to Figure 10 to make the proper connection. To power supply jack To -48 VDC source +Vin -Vin Figure 10.
6.0 OPERATION When the Model 2707/I has been properly configured and installed, it should operate transparently. This section describes power-up, LED status monitors, and the built-in loopback test modes. 6.1 POWER-UP Before applying power to the Model 2707/I, please review section “Power Connection” on page 15 to verify that the unit is properly connected to the appropriate power source. 6.2 LED STATUS MONITORS The Model 2707/I features six front panel LEDs that monitor connections on the G.
Table 2: LED descriptions LED E1 Link 10BT Link Status Description (Active Green) Solid green (On) indicates that the end to end E1 Link is up, signifying that the link is active. The E1 Link LED is Off when the link is down. (Active Green) Solid green indicates that the 10Base-T Ethernet interface has detected a valid SQE heartbeat, signifying a valid 10Base-T connection. Blinks yellow from one to eleven times to indicate system status. Each pulse pattern is separated by a 2 second “off” period.
6.3 OPERATING LINE LOOPBACK (LL) The Line Loopback (LL) test checks the operation of the local Model 2707/I, and is performed separately on each unit. G.703 NTU Model 2707/I 2 Mbps G.703 Network Clock/ Data Network Clocking Ethernet Device Cable Span Data Clock/ Data Model 2707/I Figure 12. Line loopback for a network termination application To perform an LL test, set DIP switch S1-2 to On. The TM LED will be lit while the unit is in loopback test mode.
APPENDIX A G.703 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) A.6 CLOCKING Internal or Network (Receive Recover) A.7 DISTANCE Maximum 6,000 ft (1.
APPENDIX B ETHERNET 10BASE-T SPECIFICATIONS B.1 DTE INTERFACE 10Base-T on RJ-45F B.2 DTE DATA RATES 10 Mbps 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 MAC addresses deleted after 8 minutes of inactivity B.7 FRAME BUFFER 512 Frames B.8 FRAME LATENCY 1 frame B.9 DIAGNOSTICS Line Loopback B.10 INDICATORS E-1 Link, 10Base-T Link, Ethernet Status, Test Mode B.
B.12 POWER SUPPLY 5 VDC external power supply 100–240VAC, 50–60Hz, 0.4A B.13 HUMIDITY Up to 90% non-condensing B.14 TEMPERATURE 0–50°C (32–122°F) B.15 DIMENSIONS 3.5L x 2.1W x 0.78H in.(9.0L x 5.3W x 2.
APPENDIX C FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model # Description 2707/C 2707/D 2707/I 08055DCUI 07M2707/I G.703 NTU with a V.35 interface G.703 NTU with an X.21 interface G.
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