Patton electronics 1088/K User Manual

USER
MANUAL

MODEL 1088/K

mDSL Modem with fixed
G.703/G.704 Interface

Part# 07M1088/K-C
Doc# 033141UC
Revised 06/08/00

SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
http://www.patton.com

An ISO-9001

Certified

Company

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Section Page

1.0 Warranty Information .............................................................2

1.1 Radio and TV Interference

1.2. CE Notice

1.3 Service

2.0 General Information...............................................................4

2.1 Features

2.2 Description

3.0 Configuration .........................................................................5

3.1 Configuring the Hardware DIP Switches

3.1.1 Configuration DIP Switch Set ÒS1Ó

3.1.2 Configuration DIP Switch Set ÒS2Ó

3.2 NetLink Plug ÔnÕ Play

4.0 Installation ...........................................................................13

4.1 Connect G.703 Network

4.2 Jumper Configuration

4.2.1 Connect Twisted Pair (120 ohm) to G.703 Network

4.2.2 Connect Dual Coaxial Cable (75 ohm) to G.703 Network

4.3 Connect Twisted Pair DSL Interface

4.4 Power Connection

5.0 Operation.............................................................................18

5.1 Power-Up

5.2 LED Status Monitors

5.3 Test Modes

5.3.1 Overview

5.3.2 Loops and Patterns

5.3.3 Using the V.52 (BER) Test Pattern Generator

Appendix A - Specifications ........................................................29

Appendix B - Factory Replacement Parts and Accessories.......30

Appendix C - Transmission Distance Chart................................31

Appendix D - Led Descriptions....................................................32

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Patton Electronics warrants all Model 1088 components to be

free from defects, and willÑat our optionÑrepair 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 RADIO AND TV INTERFERENCE

The Model 1088 generates and uses radio frequency energy, and
if not installed and used properlyÑthat is, in strict accordance with the
manufacturer's instructionsÑmay cause interference to radio and tele­vision reception. The Model 1088 has been tested and found to com­ply with the limits for a Class A computing device in accordance with
the specifications in Subpart J of Part 15 of FCC rules, which are
designed to provide reasonable protection from such interference in a
commercial installation. However, there is no guarantee that interfer­ence will not occur in a particular installation. If the Model 1088 does
cause interference to radio or television reception, which can be deter­mined by disconnecting the unit, the user is encouraged to try to cor­rect the interference by one or more of the following measures: mov­ing the computing equipment away from the receiver, re-orienting the
receiving antenna and/or plugging the receiving equipment into a dif­ferent AC outlet (such that the computing equipment and receiver are
on different branches).

1.2 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates
that it is in compliance with the Electromagnetic Compatibility (EMC)
directive and the Low Voltage Directive (LVD) of the European Union
(EU). A Certificate of Compliance is available by contacting Technical
Support.

2

1.3 SERVICE

All warranty and non-warranty 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 Service at:

tel: [phone]

email: [e-mail]

www: http://www.patton.com

Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 1088. Technical Service hours: 8AM to 5PM EST, Monday

through Friday.

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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 [phone].

2.1 FEATURES

¥ Multi-Rate Symmetric DSL
¥ Supports DTE Speeds from 64 kbps to 2.048 Mbps
¥ 2-wire Operation

¥ 120 ohm (RJ-45) and 75 ohm (dual coax) G.703/G.704 termina-

tions

¥ 2Mbps G.703 Clear Channel (Unframed) or nx64 G.704 (Framed)

Operation

¥ SNMP Manageable as the CP (Customer Premises) modem when

connect to Model 1095RC

¥ Selectable AMI or HDB3 Line Coding
¥ LED indicators for DSL Link, E1/FE1 Link, LOS, TM, ER and NS

2.2 DESCRIPTION

The Patton Electronics mDSL Rocket offers the ability to extend

G.703/G.704 service over Multi-rate Symmetric Digital Subscriber Line
technology. Multi-rate DSL offers the ability to deliver the maximum bit
rate that a twisted pair line can accommodate. Now, ISPs, CLECs and
corporate enterprises can terminate G.703/G.704 (E1) service and
either extend nx64 G.703/G.704 service or provide a remote serial
connection to a router or switch when paired with Model 1088/C (V.35)
or 1088/D (X.21).

As Model 1088/K receives data from E1 line, it extracts the E1
clock, and delivers smooth clock and data to the remote DSL modem
over a two-wire DSL span. In a network extension

application, a

remote 1088/K delivers nx64kbps to 2 Mbps G.703 data and clocking
to device with an E1 interface. In a network termination application,
a remote Model 1088/C or 1088/D accepts this data and clock stream
and provides nx64kbps data to CPE with a V.35, or X.21 interface.

As a symmetric DSL NTU, Model 1088/K offers the same data
rates in both directions over a single pair of regular telephone lines
using Carrierless Amplitude and Phase (CAP) modulation. Equipped
with both 75 ohm (dual coax) and 120 ohm (RJ-45), the Model 1088/K
is easy to configure and install. DSL line connection is via RJ-45 jack.
Standard versions of Model 1088 are powered by a 100/230VAC
(Universal) supply. A DC power supply option supports any DC input
between 36-72VDC.

4

IMPORTANT: The Model 1088 is equipped with flash

upgrade. Please refer to Patton website, or contact Technical
Support for the latest version of the software.

NOTE: Packages received without an RMA number will not be

accepted.

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The Model 1088/K is equipped with two sets of eight DIP switches,
which allow configuration of the unit for a wide variety of applications.
This section describes switch locations and explains all possible con­figurations.

3.1 CONFIGURING THE HARDWARE DIP SWITCHES

The 16 external switches are grouped into two eight-switch sets,
and are externally accessible from the underside of the Model 1088/K
(See Figure 1, below).

The two sets of DIP switches on the underside of the Model 1088/K
will be referred to as S1 and S2. As Figure 2 shows, the orientation of
all DIP switches is the same with respect to ÒONÓ and ÒOFFÓ positions.

5

Figure 2. Close Up of Configuration Switches (all sets are identical in appearance)

Figure 1. Underside of Model 1088/K, Showing Location of DIP Switches

Front

Rear

On

S1

S2

Off

3.1.1 Configuration DIP Switch Set ÒS1Ó

Switches S1-1 through S1-8 may be used to configure CO/CP
operation, line framing and coding, CRC-4 operation, and DTE initiated
loop diagnostics. Default settings of S1 Switches are shown in the
table below.

Switch S1-1: CO/CP

Use Switch S1-1 configure the CO (located at the Central Office or
or G.703/G.704 demarcation point) or CP (located at the Customer
Premises) mode of the 1088/K.

S1-1

CO/CP Mode

Off CO = located at the Central Office
On CP = located at the Customer Premises

CO/CP Configuration:

The Model 1088/K does not use clock mode settings as described

in other Patton mDSL products. Instead, the Model 1088/K will

always recover the clocking from the G.703/4 network and use this

clock to send data across the DSL span to the remote DSL

modem, which will use the incoming to send data out to G.703/4

network. Therefore, one unit must be set for CO mode (located at

the G.703 demarcation), and the other unit must be set for CP

mode (located at the customer premises). This type of clocking

method was employed for two reasons:

1) To allow two independent networks to use the modems as inde­pendent clocking paths.

2) To allow the user to independently specify the timing source for
the network based on external equipment.

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Position Function

S1-1 CO/CP Setting On CP Mode
S1-2 Line Coding Off HDB3
S1-3 CRC-4 Enable Off Disabled
S1-4 Reserved Off
S1-5 Reserved On
S1-6 Reserved Off
S1-7 Reserved On
S1-8 Reserved Off

Factory Default

S1 SUMMARY TABLE

OFF

ON

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CO/CP and Using the 1088/K with other Patton mDSL modems

Other Patton mDSL modems allow the option of specifying the
clock mode, but not the CO/CP designation. This is already done inter­nally within the unit. When connecting a 1088/K to an mDSL modem
(e.g. Model 1088/C, 1088/D or 1095) other then a Model 1088/K,
determine the source of the system clock and then determine the
Model 1088/Ks CO/CP designation based upon the following chart.

*Reminder: In each DSL modem pairing, one unit must act as the CO unit, the other must
act as the CP unit.

Switch S1-2: Line Coding

Use Switch S1-2 to configure the G.703/G.704 network line cod­ing. The line coding must be the same line coding prescribed by the
NAP (Network Access Provider). Most applications will use HDB3

SW4 Line Framing & Coding

Off HDB3
On AMI

Line Coding Options:

High Density Bipolar 3 (HDB3): In HDB3 coding, the transmitter

deliberately inserts a bipolar violation when excessive zeros in the

data stream are detected. The receiver recognizes these special

violations and decodes them as zeros. This method enables the

network to meet minimum pulse density requirements. Use HDB3

unless AMI is required in your application .

Alternate Mark Inversion (AMI): AMI coding does not inherently

account for ones density. To meet this requirement, you should

ensure that the data inherently meets pulse density requirements.

Switch S1-3: CRC-4 Multiframe

CRC-4 Multiframe uses Time Slot zero to carry CRC-4 informa­tion. When CRC-4 is enabled (ON), the unit synchronizes to the CRC­4 multi-frame protocol.

S1-3 Option

Off Disabled
On Enabled

NOTE: When the DTE rate is set to 2048 Kbps, Model 1088/K

transmits user data on all 32 timeslots, ignoring framing informa-

tion. In this case, Switch S1-3 will need to be in the disabled (Off)

position.

Switches S1-4, S1-5, S1-6, S1-7 and S1-8: Reserved

Switches S1-4, S1-5, S1-6, S1-7, S1-8 are reserved for factory
usage and must remain in the default configuration, except when using
the Netlink Plug-and-Play feature.

S1-4

S1-5 S1-6 S1-7 S1-8 Default Setting

Off On Off On Off Only Valid Setting

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109X

109X

MDSL Modem Clock
Mode
External
Internal
Receive Recover

MDSL Modem Unit
Designation
External
Internal
Receive Recover

1088/K setting required

CP
CP
CO

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3.1.2 Configuration DIP Switch Set ÒS2Ó

Use the eight DIP Switches in Switch S2 to enable the DTE con­nection rate. The following table summarizes default positions of DIP
Switch S3. Detailed descriptions of each switch follow the table.

Switch S2-1: DTE Rate

Use Switch S2-1 through S2-6 to set the DTE bit rate.

S2-1

S2-2 S2-3 S2-4 S2-5 S2-6 DTE Rate (kbps)
Off Off On On On On 64
On On Off On On On 128
Off On Off On On On 192
On Off Off On On On 256
Off Off Off On On On 320
On On On Off On On 384
Off On On Off On On 448
On Off On Off On On 512
Off Off On Off On On 576
On On Off Off On On 640
Off On Off Off On On 704
On Off Off Off On On 768
Off Off Off Off On On 832
On On On On Off On 896
Off On On On Off On 960
On Off On On Off On 1024

Off Off On On Off On 1088
On On Off On Off On 1152
Off On Off On Off On 1216
On Off Off On Off On 1280
Off Off Off On Off On 1344
On On On Off Off On 1408
Off On On Off Off On 1472

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On Off On Off Off On 1536
On On Off Off Off On 1600
Off On Off Off Off On 1664
On Off Off Off Off On 1728
Off Off Off Off Off On 1792
On On On On On Off 1856
Off On On On On Off 1920
On Off On On On Off 1984
Off Off On On On Off 2048

Switch S2-7: Reset Software Defaults

Switch S3-7 allows the user to reset the software configured facto­ry defaults. This will only be needed when using the Model 1001MC to
SNMP manage your units. For more information, please refer to the
Model 1001MC Operations Manual.

S3-7

Setting
On Normal Operation
Off Reset

Switch S2-8: Transmit Data (TD) Sampling Point

Switch 3-8 controls the Transmit Data (TD) sampling point.

S3-8

Setting Description
On Normal TD sampled on the falling

edge of the 1088 Transmit
Clock (TC)

Off Invert TD sampled on the rising

edge of the 1088 Transmit
Clock.

S2 SUMMARY TABLE

Position Function Factory Default

S2-1 DTE Rate Off

S2-2 DTE Rate Off

S2-3 DTE Rate On

S2-4 DTE Rate On

S2-5 DTE Rate On

S2-6 DTE Rate Off

S2-7 Reset Software Defaults On

Normal Operation

S2-8

Transmit Data Sample Point

On Normal Operation

}

2048 kbps

NOTE: Based on the DTE rate chosen, the Model 1088/K will

automatically select the optimum line rate for the distance. This
selection is based on the lowest line rate that will support the
DTE rate.