USER
MANUAL
MODEL 1088/K
mDSL Modem With Fixed
G.703/G.704 Interface
An ISO-9001Certified
Company
Part# 07M1088K-UM
Doc# 03314U2-001
Rev. E
Revised 11/6/06
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
CONTENTS
1.0 Warranty Information ................................................................. 4
1.1 Radio and TV Interference............................................................ 4
1.2 CE Notice...................................................................................... 4
1.3 Service.......................................................................................... 5
2.0 General Information.................................................................... 6
2.1 Features........................................................................................ 6
2.2 Description.................................................................................... 6
3.0 Installation................................................................................... 7
3.1 Configuring the Hardware DIP Switches ...................................... 7
Configuration DIP Switch Set “S1” ............................................... 8
Switch S1-1: CO/CP ............................................................. 8
CO/CP Configuration ............................................................. 8
Switch S1-2: Line Coding ...................................................... 9
Switch S1-3: CRC-4 Multiframe ..........................................10
Switches S1-4, S1-5, S1-6, S1-7 and S1-8: Reserved ....... 10
Configuration DIP Switch Set “S2” ............................................. 10
Switch S2-1: DTE Rate ....................................................... 11
Switch S2-7: Reset Software Defaults ................................ 12
Switch S2-8: Transmit Data (TD) Sampling Point ...............12
3.2 NetLink Plug-and-Play................................................................ 12
4.0 Installation................................................................................. 14
4.1 Connect G.703 Network ............................................................. 14
4.2 Jumper Configuration ................................................................. 14
Connect Twisted Pair (120 ohm) to G.703 Network................... 15
Connect Dual Coaxial Cable (75 ohm) to G.703 Network.......... 15
4.3 Connect Twisted-Pair DSL Interface .......................................... 16
4.4 Power Connection ...................................................................... 17
Universal AC Power (100–240 VAC).......................................... 17
120 VAC Power (US).................................................................. 17
230 VAC Power (International)................................................... 17
DC Power................................................................................... 17
5.0 Operation................................................................................... 18
5.1 Power-up .................................................................................... 18
5.2 LED Status Monitors................................................................... 18
5.3 Test MODES............................................................................... 19
Overview..................................................................................... 19
5.4 Loops and Patterns..................................................................... 21
Using the V.52 (BER) Test Pattern Generator ........................... 25
A
Specifications ........................................................................... 26
A.1 Clocking Modes .......................................................................... 26
A.2 DTE Rate ..................................................................................... 26
2
A.3 Diagnostics ................................................................................. 26
A.4 LED Status .................................................................................. 26
A.5 Configuration .............................................................................. 26
A.6 Power .......................................................................................... 26
A.7 Compliance ................................................................................. 26
A.8 Line Coding ................................................................................ 27
A.9 Line Rates (DSL line) .................................................................. 27
A.10 mDSL Physical ............................................................................ 27
A.11 G.703/G.704 Specific ................................................................. 27
A.12 Line rate ...................................................................................... 27
A.13 Line coding ................................................................................. 27
A.14 Line Framing ............................................................................... 27
A.15 Isolation ....................................................................................... 27
A.16 Physical Connection ................................................................... 27
B
Factory Replacement Parts and Accessories........................ 28
C
Transmission Distance Chart.................................................. 29
D
Model 1088/K LED Descriptions.............................................. 30
3
1.0 WARRANTY INFORMATION
Patton Electronics warrants all Model 1088 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
Note
Conformity documents of all Patton products can be viewed
online at www.patton.com under the appropriate product page.
1.1 RADIO AND TV INTERFERENCE
The Model 1088 generates and uses radio frequency energy, and if not
installed and used properly—that is, in strict accordance with the manufacturer's instructions—may 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.
4
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 Services at:
• Tel: +1
• Email:
• URL:
Note
Note
(301) 975-1007
support@patton.com
http://www.patton.com
Packages received without an RMA number will not be
accepted.
The Model 1088 is flash upgradeable. Please refer to Patton
website, or contact Technical Support for the latest version of
the software.
5
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
• Multi-Rate Symmetric DSL
• Supports DTE Speeds from 64 kbps to 2.048 Mbps
• 2-wire Operation
• 120 ohm (RJ-48C) and 75 ohm (dual coax) G.703/G.704 terminations
• 2-Mbps 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 Rock et offers the ability to extend G.703/
G.704 service over Multi-rate Symmetric Digital Subscriber Line technology. Multi-r ate DSL offers the ability to deliver the maximum bit rate that a
twisted pair line can accommodate. No w, 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 extr acts the E1 clock, and
delivers smooth clock and data to the remote DSL modem ov er a two-wire
DSL span. In a
nx64kbps to 2 Mbps G.703 data and clocking to device with an E1 interface. In a
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 75 ohm (dual
coax) and 120 ohm (RJ-48C), the Model 1088/K is easy to configure and
install. DSL line connection is via RJ-45 jac k. Standard versions of Model
1088 are powered by a 100/230VAC (Universal) supply. A DC po w er supply option supports any DC input between 36–72VDC.
network extension application
network termination application
6
, a remote 1088/K delivers
, a remote Model 1088/C or
3.0 INSTALLATION
ON
The Model 1088/K is equipped with two sets of eight DIP switches, which
allow configuration of the unit for a wide v ariety of applications. This section
describes switch locations and explains all possible configur ations.
3.1 CONFIGURING THE HARDWARE DIP SWITCHES
The 16 external switches are grouped into two eight-s witch sets , and are
externally accessible from the underside of the Model 1088/K (See
Figure 1).
Figure 1.
Underside of Model 1088/K showing location of DIP switches
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 “ON” and “OFF” positions.
OFF
Figure 2.
Close-up of configuration switches (all sets are identical in appearance)
7
Configuration DIP Switch Set “S1”
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 Table 1.
Table 1:
S1 Summary Table
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
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:
• To allow two independent networks to use the modems as indepen-
dent clocking paths.
• To allow the user to independently specify the timing source for the
network based on external equipment.
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
8
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.
MDSL Modem
Clock Mode
MDSL Modem
Unit Designation
1088/K setting
required
External External CP
Internal Internal CP
Receive
Receive Recover CO
Recover
Note
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.
9
Switch S1-3: CRC-4 Multiframe.
zero to carry CRC-4 information. When CRC-4 is enabled (ON), the unit
synchronizes to the CRC-4 multi-frame protocol.
Note
When the DTE rate is set to 2048 Kbps, Model 1088/K transmits
user data on all 32 timeslots, ignoring framing information. In this
case, Switch S1-3 will need to be in the disabled (Off) position.
CRC-4 Multiframe uses Time Slot
S1-3 Option
Off Disabled
On Enabled
Switches S1-4, S1-5, S1-6, S1-7 and S1-8: Reserved.
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-Pla y
feature.
S1-4 S1-5 S1-6 S1-7 S1-8 Default Setting
Off On Off On Off Only V alid Setting
Configuration DIP Switch Set “S2”
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 Table 2.
Table 2:
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
S2-8
Transmit Data Sample Point
Switches S1-4,
2048 kbps
}
Normal Operation
On Normal Operation
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