Patton electronic 2701-I User Manual

USER MANUAL
MODEL 2701/I
G.703/G.704 NTU with 10Base-T Ethernet Interface
Important—This is a Class A device and is
intended for use in a light industrial environ­ment. It is not intended nor approved for use in an industrial or residential environment.
Part# 07M2701I-UM
Doc# 08609U2-001
Rev. I
Revised 2/18/08
An ISO-9001Certified
Company
SALES OFFICE (301) 975-1000 TECHNICAL SUPPORT (301) 975-1007
CONTENTS
1.0 Warranty & Compliance Information ........................................ 4
1.1 Compliance................................................................................... 4
EMC Compliance.......................................................................... 4
Safety Compliance: ...................................................................... 4
PSTN Regulatory Compliance:..................................................... 4
1.2 CE Notice...................................................................................... 5
1.3 Authorized European Representative........................................... 5
1.4 Service.......................................................................................... 5
1.5 Safety When Working With Electricity .......................................... 6
2.0 General Information.................................................................... 7
2.1 Features........................................................................................ 7
2.2 Description.................................................................................... 7
3.0 PPP Operational Background.................................................... 9
3.1 Applications .................................................................................. 9
4.0 Configuration ............................................................................ 11
4.1 DIP Switch Configuration............................................................ 11
Switch SW1 ................................................................................ 12
Switch SW-1 through SW1-5 ............................................... 12
SW1-6 and SW1-7 Clock Modes ......................................... 13
Switch SW2 ................................................................................ 14
Switch SW2-1 Line Coding: HDB3 (default) ........................ 14
Switch SW2-2: CRC-4 Multiframe ....................................... 15
Switch SW2-3 Data Inversion .............................................. 15
Switch SW2-4: Remote Digital Loopback Type ................... 15
Switch SW2-5 Front Panel Switches ................................... 16
Switch SW2-6: V.54 Response Disabled (default) .............. 16
5.0 Installation................................................................................. 17
5.1 Connecting to the G.703 Network............................................... 17
Connecting Dual Coaxial Cable (75 ohm) to the G.703 Network 17
Opening the Case....................................................................... 18
Connecting the Twisted Pair (120 ohm) to the G.703 Network .. 18
5.2 Connecting the 10Base-T Ethernet Port to a PC (DTE) ............. 19
5.3 Connecting the 10Base-T Ethernet Port to a Hub ...................... 19
5.4 Power Connection ...................................................................... 20
Universal AC Power (100–240 VAC).......................................... 20
DC Power ................................................................................... 20
6.0 Operation................................................................................... 21
6.1 Power-up .................................................................................... 21
6.2 LED Status Monitors................................................................... 21
6.3 Loop (V.54 & Telco) Diagnostics ................................................ 23
Operating Local Loopback (LL) .................................................. 23
Operating Remote Digital Loopback (RL)................................... 24
CSU Loop ................................................................................... 24
Using the V.52 (BER) Test Pattern Generator ........................... 25
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A
Specifications ........................................................................... 26
A.1 Network Data Rate ...................................................................... 26
A.2 Network Connector ..................................................................... 26
A.3 Nominal Impedance ................................................................... 26
A.4 Line Coding ................................................................................ 26
A.5 Line Framing ............................................................................... 26
A.6 CRC-4 Multiframing .................................................................... 26
A.7 Clocking ...................................................................................... 26
A.8 Time Slot Rate ............................................................................. 26
A.9 Network Data Rates .................................................................... 26
A.10 Distance ...................................................................................... 26
A.11 Power Supply .............................................................................. 26
A.12 Humidity ...................................................................................... 27
A.13 Temperature ............................................................................... 27
A.14 Dimensions ................................................................................. 27
B
Ethernet 10Base-T Specifications........................................... 28
B.1 DTE Interface .............................................................................. 28
B.2 DTE Data Rates .......................................................................... 28
B.3 LAn Connection .......................................................................... 28
B.4 Protocol ....................................................................................... 28
B.5 MAC Address Table Size ............................................................ 28
B.6 MAC Address Aging ................................................................... 28
B.7 Frame Buffer ............................................................................... 28
B.8 Frame Latency ............................................................................ 28
B.9 Diagnostics ................................................................................. 28
B.10 Indicators .................................................................................... 28
B.11 Configuration .............................................................................. 28
C
Factory Replacement Parts and Accessories........................ 29
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1.0 WARRANTY & COMPLIANCE INFORMATION
Patton Electronics warrants all Model 2701/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. Under no condition shall Patton Electronics be liable for any damages incurred by the use of this product. These damages include, but are not limited to, the following: 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 by the user.
1.1 COMPLIANCE
EMC Compliance
• EN55022, Class A
• EN55024
Safety Compliance:
• EN 60950-1
• AS/NZS 60950-1
PSTN Regulatory Compliance:
• TBR 12 & 13
• AS/ACIF S016:2001
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1.2 CE NOTICE
We certify that the apparatus identified in this document conforms to the requirements of Council Directive 1999/5/EC on the approximation of the laws of the member states relating to Radio and Telecommunication Ter­minal Equipment and the mutual recognition of their conformity.
The safety advice in the documentation accompanying this product shall be obeyed. The conformity to the above directive is indicated by the CE sign on the device.
1.3 AUTHORIZED EUROPEAN REPRESENTATIVE
D R M Green
European Compliance Services Limited.
Oakdene House, Oak Road
Watchfield, Swindon, Wilts SN6 8TD, UK
1.4 SERVICE
All warranty and nonwarranty repairs must be returned freight prepaid and insured to Patton Electronics. All returns must have a Return Mate­rials 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.
Patton Electronics' technical staff is also available to answer any ques­tions that might arise concerning the installation or use of your Patton Model 2701/I. Technical Service hours: 8AM to 5PM EST, Monday through Friday.
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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 country in which it is to be installed, and that it is connected to a wall outlet which has earth ground. The mains outlet that is uti­lized to power the devise shall be within 10 feet (3 meters) of the device, shall be easily accessible, and protected by a circuit breaker.
WARNING
• Hazardous network voltages are present in WAN ports regardless of whether power to the unit is ON or OFF. To avoid electric shock, use caution when near WAN ports. When detaching the cables, detach the end away from the device first.
• Do not work on the system or connect or disconnect cables during periods of lightning activity.
WARNING
In accordance with the requirements of council direc­tive 2002/96/EC on Waste of Electrical and Electronic Equipment (WEEE), ensure that at end-of-life you sepa­rate this product from other waste and scrap and deliver to the WEEE collection system in your country for recy­cling.
This device is not intended to be connected to the public telephone network.
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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 and G.704, E1/fractional E1 service
• Available in low-cost standalone or rack-mountable versions
• n x 64 kbps data rates to 2.048 Mbps
• 10Base-T Ethernet bridge
• PPP (Point to Point Protocol, RFC 1661) with Bridge Control Protocol
(RFC 1638)
• 75-ohm dual coax and 120-ohm twisted-pair G.703 connections
• Local and remote loopback diagnostics
• Internal and G.703 network timing
• CE approval
• 90-260VAC & 48VDC power options
• Conforms to ONP requirements CTR 12 and CTR 13 for connection to
international Telecom networks
2.2 DESCRIPTION
The Model 2701/I receives channelized G.704 (n x 64kbps) or clear channel E1/G.703 (2.048-Mbps) data from the telco's digital data net­work. The Model 2701/I terminates the G.703 telco interface and con­verts the data for transmission to a user-oriented 10Base-T (802.3) Ethernet interface.
The Ethernet (Model 2701/I) supports an integrated 10Base-T (802.3) Ethernet port with transparent bridging capability for IP, IPX, DECnet, NetBIOS and other layer-3 protocols. The 2701/I attaches to the LAN and intelligently bridges data traffic to the large central site router through the telco's leased line network. The 2701/I supports PPP (RFC
1661) and BCP (RFC 1638).
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The Model 2701/I is a 10Base-T bridge that operates over G.703/G.704 lines. It uses MAC learning and forwarding to provide seamless LAN-to­LAN connectivity. As a result, corporate enterprises can connect their servers to a pair of NTUs and automatically forward data packets that are meant for the remote network. Local packets are filtered and passed only to the local LAN.
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3.0 PPP OPERATIONAL BACKGROUND
PPP is a protocol used for multi-plexed transport over a point-to-point link. PPP operates on all full duplex media, and is a symmetric peer-to­peer protocol, which can be broken into three main components: 1. A standard method to encapsulate datagrams over serial links; 2. A Link Control Protocol (LCP) to establish, configure, and test the data-link con­nection; 3. A family of Network Control Protocols (NCPs) to establish and configure different network layer protocols.
In order to establish communications over a point-to-point link, each end of the PPP link must first announce its capabilities and agree on the parameters of the link’s operation. This exchange is facilitated through LCP Configure-Request packets.
Once the link has been established and optional facilities have been negotiated, PPP will attempt to establish a network protocol. PPP will use Network Control Protocol (NCP) to choose and configure one or more network layer protocols. Once each of the network layer protocols have been configured, datagrams from the established network layer protocol can be sent over the link. The link will remain configured for these communications until explicit LCP or NCP packets close the link down, or until some external event occurs.
The PPP Bridging Control Protocol (BCP), defined in RFC 1638, config­ures and enables/disables the bridge protocol on both ends of the point­to-point link. BCP uses the same packet exchange mechanism as the Link Control Protocol (LCP). BCP is a Network Control Protocol of PPP, bridge packets may not be exchanged until PPP has reached the net­work layer protocol phase.
3.1 APPLICATIONS
In situations where a routed network requires connectivity to a remote Ethernet network, the interface on a router can be configured as a PPP IP Half Bridge. The serial line to the remote bridge functions as a Virtual Ethernet interface, effectively extending the routers serial port connec­tion to the remote network. The bridge device sends bridge packets (BPDU's) to the router's serial interface. The router will receive the layer three address information and will forward these packets based on its IP address.
Figure 1 shows a typical 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. The serial interface on the Cisco will have an IP address on the same Ethernet subnet as the bridge.
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Figure 1. Cisco router with serial interface, configured as PPP Half Bridge.
For example, 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 default gateway for the remote network. The above settings remove any routing/forwarding intelligence from the CPE. The associated Cisco con­figuration will set serial interface (s0) to accommodate half bridging for the above example.
Authentication is optional under PPP. In a point-to-point leased-line link, incoming customer facilities are usually fixed in nature, therefore authen­tication is generally not required. If the foreign device requires authenti­cation via PAP or CHAP, the PPP software will respond with default Peer­ID consisting of the units Ethernet MAC address and a password which consists of the unit’s Ethernet MAC address.
Some networking systems do not define network numbers in packets sent out over a network. If a packet does not have a specific destination network number, a router will assume that the packet is set up for the local segment and will not forward it to any other sub-network. However, in cases where two devices need to communicate over the wide-area, bridging can be used to transport non-routable protocols.
Figure 2 illustrates transparent bridging between two routers over a serial interface (s0). Bridging will occur between the two Ethernet Inter­faces on Router A (e0 and e1) and the two Ethernet Interfaces on Router B (e0 and e1).
Figure 2. Transparent bridging between two routers over a serial interface
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