USER
MANUAL
MODEL 1088/I
10BaseT mDSL Rocket
Part# 07M1088I-UM
Doc# 03311U2-001
Rev. D
SALES OFFICE
(301)975-1000
Revised 10/24/06
TECHNICAL SUPPORT
(301)975-1007
An ISO-9001
Certified
Company
2.0 GENERAL INFORMATION
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 Support at:
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is warrant-
ed for One Year parts and labor. If any questions or problems arise
during installation or use of this product, please do not hesitate to con-
tact Patton Electronics Technical Support at (301) 975-1007.
2.1 FEATURES
tel:
(301)975-1007
• Provides MAC Level Data Link (Layer 2) connection between two
peered 10BaseT Ethernet LANs
email: [email protected]
• Operates transparently to higher level protocols such as TCP/IP,
DECnet, NETBIOS and IPX
NOTE: Packages received without an RMA number will not be
accepted.
• PPP (Point to Point Protocol, RFC 1661) with Bridge Control
Protocol (RFC 1638)
• Automatically learns, loads and removes MAC addresses
• Point-to-Point Connectivity over 2-Wire mDSL up to 10km
• NetLink Plug-and-Play Slave
Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 1088. Technical Support hours: 8AM to 5PM EST, Monday
through Friday.
• HTTP/SNMP Manageable as CP (Customer Premises) Unit with
1095RC CO (Central Office) Rack Card
• Internal or receive recovered clocking between units
• LED indicators for 10BaseT Link, DSL Link, Status, No Signal,
Error and Test Mode
2.2 DESCRIPTION
The NetLinkTM 10BaseT mDSL Rocket (Model 1088) is a Multi-
Rate DSL Modem that provides seamless MAC Layer connectivity
between 2 peered 10BaseT LANs. Now, Enterprise users no longer
need to hassle with a bridge and a CSU/DSU or recurring leased line
costs. The NetLink Rocket allows users to add additional nodes to a
LAN that has reached its maximum distance limits or separate high
traffic areas of a LAN. The Rocket connects peered LANs and auto-
matically forwards and receives LAN broadcasts, multi-casts and
frames across a 2-Wire DSL span. The 1088/I supports PPP (RFC
1661) and BCP (RFC 1638).
The NetLinkTM mDSL 10BaseT Rocket features include loop-
back diagnostics, inband SNMP/HTTP remote management capabili-
ties using NetLink Plug-and-Play and externally accessible configura-
tion switches. As a symmetric DSL modem, the NetLinkTM mDSL
Rocket offers the same data rates in both directions over a single pair
of regular telephone lines using Carrierless Amplitude and Phase
(CAP) modulation. The Rocket connects to the DSL line via an RJ-45
jack. Standard power options include 115VAC, 230VAC, Universal
(115/230VAC) and any DC input between 36-60VDC.
3
4
Patton
1088/I
Bridge
Router
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 sym-
metric peer-to-peer 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, con-
figure, and test the data-link connection; 3. A family of Network
Control Protocols (NCPs) to establish and configure different net-
work 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.
Ethernet LAN
PEC Device w/ Serial I/F
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 net-
work. The above settings remove any routing/forwarding intel-
ligence 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 Peer-ID consisting
of the units Ethernet MAC address and a password which
consists of the unit’s Ethernet MAC address.
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 con-
figure one or more network layer protocols. Once each of the net-
work 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 point-to-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.
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 for-
ward it to any other sub-network. However, in cases where
two devices need to communicate over the wide-area, bridg-
ing 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).
3.1 Applications
1088/I
!
MDSL
Serial Interface
no ip routing
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, effec-
tively 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.
Router A
!
interface Ethernet0
ip address 1.1.1.1 255.255.255.0
bridge-group 1
!
interface Serial0
ip address 1.1.1.1 255.255.255.0
encapsulation PPP
bridge-group 1
S0
e0
LAN
S1
Using Bridge-Groups, multi-
ple remote LANs can be
bridged over the wide-area.
LAN
Router B
S1
S0
!
interface Serial1
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.
ip address 2.2.2.2 255.255.255.0
bridge-group 1
!
bridge 1 protocol ieee
!
e0
e1
LAN
LAN
LAN
1088/I
Figure 2. Transparent bridging between two routers over a serial interface.
6
5
4.0 CONFIGURATION
PTTs the ability to provision bandwidth on an as needed basis to cus-
tomers.
There are two modes of operation for the model 1088: Plug-and-
Play and self configuration. Both are described below.
The NetLink Plug and Play application will also work in an
HTTP/SNMP managed system using the by deploying a NetLink Model
1001MC SNMP agent card with 1095RC cards installed in Patton’s 2U
rack system. In this application, the system administrator can config-
ure the entire rack through the Network Management Station (NMS)
before the stand alone (CP) units are installed. For more information
on the HTTP/SNMP management, please refer to the Model 1001MC
Operations Manual.
4.1 NETLINK PLUG-AND-PLAY
The NetLink Plug-and-Play feature allows ISPs, carriers and PTTs
to quickly upgrade the link speed for a customer without requiring a
truck roll to configure the Customer Premise (CP) Model 1088. This
feature also allows service providers to set up all of the configurations
at the Central Office (on the rack cards) before installing the stand
alone units, saving time spent configuring or re-configuring DIP switch-
es.
NOTE: NetLink Plug-and-Play is only available when using a
rack-mounted NetLink Model 1095RC as the CO unit.
The NetLink Plug-and-Play feature allows the user to configure the
DTE rate (bandwidth allocation, see Switches S3-1 through S3-6) of
the CP unit from the rack card at the Central Office (CO). The stand
alone unit at the Customer Premise (CP) site will automatically config-
ure itself to the DTE rate (Bandwidth Allocation) of the rack card.
Other configuration parameters remain in the default setting.
Follow the instructions below to activate NetLink Plug-and-Play
between CO (Model 1095RC and CP (Model 1088) units:
1. Set the Model 1095RC (CO) to either Internal or External
clocking mode as defined by the application.
2. Set the Model 1088 (CP) to “NetLink Plug-and-Play CP” by
setting all S2 and S3 DIP switches in the OFF position as
described in Figure 3, below.
1088
(CP)
DSL Span
1095RC
(CO)
DIP Switches all in OFF position
DIP Switches or NMS configured
according to specific application
requirements
Figure 3. Typical NetLink Plug-and-Play Application
When the CO and CP units connect over DSL, the CP will enter a
predefined default configuration (Receive Recovered Clocking). During
the negotiation process between the units, the CO unit will configure
the DTE rate/line rate on the CP unit as defined by the settings of the
CO unit. When additional bandwidth is required, only the configuration
of the CO unit should be changed. This feature gives ISPs, LECs and
8
7
4.2 CONFIGURING THE HARDWARE DIP SWITCHES
4.2.1 Configuration DIP Switch Set “S2”
The Model 1088 has two sets of eight DIP switches, which allow
configuration for a wide variety of applications. This section describes
switch locations and explains all settings.
The 16 external switches are grouped into two eight-switch sets,
and are externally accessible from the underside of the Model 1088, as
shown in Figure 4, below.
The only setting for S2 is for Clocking Mode between Model
1088s. All other switches are reserved for factory usage and must
remain in the default configuration. Default settings are shown in the
table below.
S2SUMMARYTABLE
Position
S2-1
Function
Reserved
Factory Default
FRONT
Off
Off
Off
Off
Off
S2-2
S2-3
S2-4
S2-5
S2-6
S2-7
S2-8
Reserved
Reserved
Reserved
Reserved
Clock Mode
Clock Mode
Reserved
On
Off
Off
Receive
Recover
ON
S2
Switch S2-1, S2-2, S2-3, S2-4, S2-5 and S2-8:
S3
OFF
Switches S2-1, S2-2, S2-3, S2-4, S2-5 and S2-8 are reserved for fac-
tory use and must remain in the factory default settings as shown in
the table above.
REAR
Figure 4. Underside of Model 1088, showing location of DIP switches
Switches S2-6 and S2-7: Clock Mode
The two sets of DIP switches on the underside of the Model 1088
will be referred to in this manual as S2 and S3. As Figure 5 shows,
the orientation of all DIP switches is the same with respect to “ON” and
“OFF” positions.
Use Switches S2-6 and S2-7 to configure internal, or receive
recover (clocking derived from the remote Model 1088 across the DSL
span) settings. One Model 1088 (typically the CO, or “Central Office”
unit) will be set for Internal Clock. The remote Model 1088 (typically
the CP, or Customer Premises unit) will be set for Receive Recover
clocking. The table below shows the clock mode settings.
ON
OFF
CO/CP
Figure 5. Close Up of Configuration Switches (all sets are identical in appearance)
Unit
S2-6
S2-7
Clock Mode
Description
Model 1088 gener-
ates internal, crystal
controlled timing.
CO
On
On
Internal
Model 1088
Receive Recover receives its timing
from the CO unit
CP
On
Off
over the DSL span.
9
10
Off
On
Off
On
Off
On
Off
Off
On
On
Off
Off
On
On
On
Off
Off
Off
Off
On
On
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
Off
Off
On
On
On
On
On
On
On
576
640
704
768
832
896
960
4.2.2 Configuration DIP Switch Set “S3”
Use the DIP Switches in Switch S3 to set the DTE Rate (for LAN
Bandwidth Allocation), the transmit data sampling point and to reset
the unit to its software default settings. The following table summa-
rizes default positions of DIP Switch S3. Detailed descriptions of each
switch follow the table.
On
Off
Off
Off
On
On
On
On
Off
Off
On
On
1024
1088
On
Off
On
Off
On
Off
On
On
Off
On
Off
On
Off
On
On
On
Off
Off
On
On
Off
On
On
Off
Off
On
On
Off
Off
Off
Off
Off
On
On
On
Off
Off
Off
Off
On
On
On
On
On
On
On
Off
Off
Off
Off
Off
Off
Off
On
On
On
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
On
On
On
Off
Off
Off
1152
1216
1280
1344
1408
1472
1536
1600
1664
1728
1792
1856
1920
1984
S3 SUMMARY TABLE
Position
S3-1
S3-2
S3-3
S3-4
S3-5
S3-6
S3-7
S3-8
Function
DTE Rate
Factory Default
On
Off
Off
DTE Rate
DTE Rate
768 kbps
DTE Rate
Off
On
On
}
DTE Rate
DTE Rate
Reset Software Defaults
Reserved
On Normal Operation
Off
On
Off
On
Off
Off
On
On
Off
Off
On
Off
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
Off
Off
Off
Off
Off
2048
2112
2176
2240
2304
On
Switch S3-1 through S3-6: DTE Rate
Use Switch S3-1 through S3-6 to provision bandwidth to the LAN
in 64kbps increments up to 2.304Mbps. Peak bandwidth utilization on
the local domain on an Ethernet LAN runs typically between 15% to
20% (1.5Mbps to 2Mbps) of the maximum bit rate of 10Mbps. Traffic
between LANs typically runs even lower -- between 2% to 7%
(200kbps to 700kbps) of the maximum bit rate depending upon appli-
cation and environmental conditions. This is the amount of traffic that
will run across the DSL span.
NOTE: The Model 1088 will automatically select the optimum
line rate for the required distance based on the DTE rate set by
Switches S3-1 through S3-6. This selection is based on the low-
est line rate that will support the DTE rate.
Switch S3-7: Reset Software Defaults
Set Switches 3-1 through S3-6 to allocate bandwidth based upon
expected LAN to LAN traffic rates. As an example, set applications
which low LAN to LAN bandwidth content between 64kbps and
576kbps. Applications with high bandwidth LAN to LAN content should
be set between 576kbps and 2.304Mbps as required.
Use Switch S3-7 to reset the software configured factory defaults.
This feature is applicable only using the Model 1001MC to SNMP
through Model 1095 central office to manage your units. For more
information, please refer to the Model 1001MC Operations Manual.
S3-7
On
Off
Setting
Normal Operation
Reset
S3-1 S3-2 S3-3 S3-4 S3-5 S3-6
DTE Rate (kbps)
64
Off
On
Off
On
Off
On
Off
On
Off
On
On
Off
Off
On
On
Off
On
Off
Off
Off
Off
On
On
On
On
On
On
On
On
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
128
192
256
320
384
448
512
Switch S3-8: Reserved
Switch S3-8 is reserved for factory use and must remain in the On
position.
11
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5.0 INSTALLATION
5.2 CONNECTING 10BASE-T ETHERNET PORT TO PC (DTE)
The 10Base-T interface is configured as DTE (Data Terminal
Equipment). If the Model 1088 is to to connect to another DTE device
such as a 10Base-T network interface card, construct a 10Base-T
crossover cable and connect the wires as shown in the diagram below.
When the Model 1088 has been properly configured, it may be
connected to the DSL twisted pair interface, the 10BaseT Ethernet
Interface, and the power source. This section describes these connec-
tions.
10BaseT Port
RJ-45 Pin No.
1 (TD+)
10Base-T DTE
RJ-45 Pin No.
1 (TD+)
DSL
Interface
2 (TD-)
2 (TD-)
10BaseT
Interface
3 (RD+)
6 (RD-)
3 (RD+)
6 (RD-)
5.1 CONNECTING DSL INTERFACE
5.3 CONNECTING 10BASE-T ETHERNET PORT TO HUB (DCE)
The Model 1088 supports communication between 10BaseT Hubs
or Workstations at distances to 5 miles (8 km) over 24 AWG (.5mm)
twisted pair wire. There are two requirements for installing the Model
1088:
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. Use the diagram below to construct a cable to
connect the 10 BaseT interface to a 10Base-T Hub.
1. These units operate as a pair. Both units at the end of the
10BaseT Port
RJ-45 Pin No.
1 (TD+)
10Base-T Hub
RJ-45 Pin No.
1 (RD+)
twisted pair DSL span must be set for the same DTE rate.
2. To function properly, the Model 1088 needs one
twisted pair of metallic wire. This twisted pair must be
unconditioned, dry, metallic wire, between 19 (.9mm) and 26
AWG (.4mm) (the higher number gauges will limit distance).
Standard dial-up telephone circuits, or leased circuits that run
through signal equalization equipment, or standard, flat modu-
lar telephone type cable, are not acceptable.
2 (TD-)
2 (RD-)
3 (RD+)
6 (RD-)
3 (TD+)
6 (TD-)
The RJ-45 connector on the Model 1088’s twisted pair interface is
polarity insensitive and is wired for a two-wire interface. The signal/pin
relationships are shown in Figure 6 below.
1 TD+ (data output from 1088)
2 TD- (data output from 1088)
3 RD+ (data input to 1088)
4 (no connection)
5 (no connection)
6 RD- (data input to 1088)
7 (no connection)
1
2
3
4
5
6
7
8
1 (N/C)
2 (N/C)
3 (N/C)
4 (2-Wire TIP)
5 (2-Wire RING)
6 (N/C)
1
2
3
4
5
6
7
8
8 (no connection)
Figure 7. Model 1088 10BaseT Ethernet RJ-45 Connector Pinout
7 (N/C)
8 (N/C)
Figure 6. Model 1088 twisted pair line interface.
13
14
5.4 POWER CONNECTION
Universal AC Power (100-240VAC)
6.0 OPERATION
When the Model 1088 has been properly configured and installed,
it should operate transparently. This sections describes power-up,
LED status monitors, and the built-in loopback test modes.
The Model 1088 uses a 5VDC, 2A universal input 100-240VAC,
power supply (center pin is +5V). The universal input power supply
has a male IEC-320 power entry connector. This power supply con-
nects to the Model 1088 by means of a barrel jack on the rear panel.
Many international power cords are available for the universal power
supply. Please refer to Appendix B for country-specific power cords.
6.1 POWER-UP
Before applying power to the Model 1088, please read Section
5.4 and ensure that the unit is connected to the appropriate power
source.
The Model 1088 powers up as soon as it is plugged into an AC
outlet. The Model 1088 does not have a power switch.
6.2 LED STATUS MONITORS
120 VAC Power (US)
The Model 1088 features six front panel LEDs that monitor con-
nections on the DSL and 10BaseT links, signaling, error and test
modes. Figure 9 (below) shows the front panel location of each LED.
The 100-132 VAC adapter supplied with the U.S. version of the
Model 1088 is a wall mount type and may be plugged into any
approved 120 VAC wall jack.
NetLinkTM10BaseT mDSL Rocket
Link
230 VAC Power (International)
-511E/RDL
-Normal
DSL
Status
NS
10BT
ER
TM
The 230 VAC adapter supplied with the International version of the
Model 1088 is a wall mount type and may be plugged into any
approved 230 VAC wall jack.
-511/RDL
Figure 7. Model 1088 Front Panel
Descriptions of each LED follow Figure 9.
DC Power
DSL Link
(Active Green) Solid green (On) indicates that the
The 36-60 VDC DC to DC adapter is supplied with the DC version
of the Model 1088. The black and red leads plug into a DC source
(nominal 48VDC) and the barrel power connector plugs into the barrel
power supply jack on the rear panel of the 1088. (See Figure 8).
end to end DSL Framer Link is up, signifying that
the link across the DSL span is active. The DSL
Link LED is Off when the link is down.
Status
Blinks yellow from one to eleven times to indicate
system status. Each pulse pattern is separated by
a 2 second “off” period. Greater pulse patterns
have higher priority (buffer saturation has greater
priority than an empty MAC table). Valid system
statuses are:
To Power
To -48VDC
Supply Jack
Source
-Vin
Black lead (-V)
Red lead (+V)
+Vin
Barrel power connector
1 pulse
=
system status is okay
2 pulses = no MAC entries in the MAC
Address Table
3 pulses = Clear to Send (CTS) or Carrier
Detect (DCD) from base unit are not
asserted
4 pulses = IM1/I buffer is saturated
5 pulses = WAN receive frame(s) too large
6 pulses = WAN receive frame(s) not octet
aligned
Figure 8. Connecting DC Power to the 48V-PSM3 DC Power Supply.
WARNING! There are no user-serviceable parts in the
power supply section of the Model 1088. Contact Patton
Electronics Technical support at (301)975-1007, via our web
ton.com, for more information.
7 pulses
8 pulses
=
=
WAN receive frame(s) aborted
Detected WAN receive frame(s) with
15
16
CRC
6.4 TEST MODES
9 pulses
=
Detected LAN receive frame(s) too
large
The Model 1088 offers a proprietary Remote Loopback test modes,
plus a built-in V.52 BER test pattern generator to evaluate the communi-
cation status between units. Activate this test mode by toggling the Test
Mode Switch on the front panel of the unit.
10 pulses = Detected LAN receive frame(s) not
octet aligned
11 pulses = Detected LAN receive frame(s) with
bad CRC
6.4.1 Overview
10BT Link
(Active Green) Solid green indicates that the
10BaseT Ethernet interface has detected a valid
SQE heartbeat, signifying a valid 10BaseT con-
nection.
Figure 10 below shows the major elements used in the loop-back
and 511 pattern tests available in the Model 1088. Each block has sever-
al functions. Following Figure 10 are descriptions of the elements during
Test Modes.
NS
ER
(Active Red) Solid red indicates that the Digital
Signal Processors (DSPs) are not linked.
(Active Red) Flashing red indicates CRC Errors on
DSL (Framer) side if DSL Link is active or if bit
errors are received during loop/BER test.
- ER flashes once to indicate a CRC error (during
normal operation) or bit errors (during Remote
Loopback 511/511E tests).
DSL
Span
Pattern
Gen/Det
Pattern
Loop
Control
Loop
Control
Framer
Framer
Gen/Det
Processor
Figure 10: Block Diagram- Two Model 1088s Communicating Over the DSL Span
Processor
TM
(Active Yellow) Solid Yellow indicates an Active
Test Mode. The unit may be placed in test mode
by the local user or by the remote user.
Framer
The framer determines the status of the line. In
normal operation the framer transmits and expects
to receive framed packets from the far end. If the
framer receives framed packets from the far end,
the DSL Link LED will turn on. If framed packets
are not received, the DSL Link LED will turn off.
The restart procedure uses this information to
determine if a valid connection is made (cable dis-
connect, poor cable quality, etc). In normal Data
Mode, if the box receives 4 seconds of unframed
packets it will restart the box and begin trying to
re-establish a connection
6.3 LED STATUS TABLE
LOCAL
REMOTE
10BaseT DSL Status NS ER
TM 10Base-T DSL Status NS ER TM
Power ON G*
DSL Link G*
Link Brk G*
Brk+ 10s G*
off
G
F
F
F
F
ON off off
off off off
off off off
ON off off
off off ON
off off ON
G*
G*
G*
G*
G*
G*
off
off
off
off
off
off
F
F
F
F
ON off off
off off off
off off off
ON off off
off off ON
off off ON
off
off
G
RDL
G*
G*
F
F
RDL+511
off
F
F
With DTE Connected
With DTE Connected
with the the remote Model 1088. The distinction
between framed packets and unframed packets
becomes important when we discuss the Pattern
Generator.
Mark
Space
Data
G*
G*
G*
G
G
G
F
F
F
off off off
off off off
off off off
G*
G*
G*
G
G
G
F
F
F
off off off
off off off
off off off
Link Brk = DSL Link Broken
Brk+10s = 10 Seconds following Link Break
G=GREEN
O=ORANGE
ON= ON
off= OFF
F=Flashing
Pattern Gen/Det
This part of the Processor generates and detects
the 511/511E patterns. When transmitting 511 pat-
terns, the information is unframed (because it origi-
nates after the framer) and is intended to be evalu-
ated only by another Processor. If the units are
G*=Green if a valid 10Base-T connection is detected.
17
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transmitting data and the pattern generator is
enabled on one end of the link, the far end will
begin receiving unframed packets and assume
that the line has gone down. During test modes,
the pattern generator is forced to time out before
it can cause the DSL link to go down.
6.4.2 Loops and Patterns
The following section describes the Remote Loopback/BER test
modes.
Remote Digital
When Remote Loop/511 or Remote Loop/511/E
is enabled via the front panel switch, the
Loop Control
This part of the Processor is used to control
Remote Loopback test mode. In a Remote
Loop, the 511/511/Edata is looped back to the
line and to the remote unit over the DSL span.
Remote unit’s Restart Timer is set to one
minute. This is because when the 511/511E gen-
erator is initiated on the local unit, the Remote
framer begins seeing unframed packets. The
Remote unit can not distinguish the 511/511E
pattern from the line being disconnected, so the
Restart Timer has been lengthened to allow the
pattern generator to function. Once the 511/511E
test is started, the Local unit changes its' Restart
Timer to one minute. The pattern originates with-
in the Processor and is sent to the Remote unit.
It is then looped back to the Local unit where it
is evaluated for errors. After 45 seconds, the
Pattern Generator will timeout and stops send-
ing the pattern. The ER led will begin blinking
until the user turns off the 511/511E switch.
Restart Procedure The restart procedure is in place to allow the
and Time Outs
units to re-establish a connection after the
framer begins seeing unframed packets. The
Test Mode Timing Chart below shows the
amount of time the framer must see consecutive
unframed packets before the unit will restart and
try to establish a new line connection. The rea-
son that there are different Restart Times will
become apparent after reading the rest of the
document. The 511/511E Time Out shown refers
to the amount of time the 511/511E pattern will
be valid. At the end of this time the pattern will
automatically turn itself off and the normal data
path will be re-established. The ER led will flash
indicating to the user that the test has timed out.
The ER led will stop flashing once the 511/511E
switch is placed into the normal position.
Pattern
Gen/Det
Loop
Control
Loop
Control
Framer
Pattern
Gen/Det
Framer
Line
Test Mode Timing
Item
Start Up
Elapsed Time (seconds)
Processor
Processor
50
4
Data Mode
511/511E Generator Enabled 60 (The generator will stop after 45 seconds.)
6.4.3 Using the V.52 (BER) Test Pattern Generator
Remote End of an RDL
511/511E Time Out
60
45 (The pattern generator will automatically turn
off after 45 seconds. The ER LED will flash until
the user turns off the 511/511E switch.)
To use the V.52 BER tests in conjunction with the Remote Digital
Loopback tests, follow these instructions:
1.
Locate the Remote Loop/511 & Remote Loop/511E toggle
switch on the front panel of the 1088 and move it DOWN.
This activates the Remote Loop with V.52 BER and transmits
a “511” test pattern into the loop. If any errors are present,
the local unit’s red “ER” LED will blink sporadically.
Symbol Indicators
This symbol designates the origination or the
termination of a data path. The direction of the
arrow connected distinguish the two data paths.
This symbol designates an invalid data path. If
there is data present it should be ignored.
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2. If the above test indicates no errors are present, move the
test switch V.52 toggle switch UP, activating the “511/E”
test with intentional errors present. If the test is working prop
erly, the local unit’s red “ER” LED will blink. A successful
“511/E” test will confirm that the link is in place, and that the
Model 1088’s built-in “511” generator and detector are work
ing properly.
APPENDIX A
PATTON ELECTRONICS 10BASE-T MDSL ROCKET
SPECIFICATIONS
Clocking Modes:
DTE Rate:
Diagnostics:
Internal or Receive Recovered
All 64k increments from 64 to 2304 kbps
V52 compliant (511/511E) pattern generator
and detector with error injection mode and
Remote Loopback control by a single front
panel switch
LED Status:
The following LEDs are displayed on the
front panel:
DSL Link (Green Active) - DSL Link Active
10BT Link (Green Active) - Valid Ethernet
Connection
Status (Flashing Yellow) - Status indica-
tion from the Ethernet port
NS (Red Active) - No signal on DSP Link
ER (Flashing Red) - CRC error during nor-
mal operation, bit error during pattern gen-
eration test
TM (Active Yellow) - Test Mode Enabled
Externally accessible dip switches or
SNMP/HTTP managed through 1095RC
+5V External desk top power supply, 100-
240VAC, 50-60 Hz (Universal Input), 10W
or -48 VDC
Configuration:
Power:
Compliance:
FCC Part 15, CE mark
Transmission Line:
Line Coding:
Single Twisted Pair (2 wires)
CAP (Carrierless Amplitude and Phase
Modulation)
144, 272, 400, 528, 784, 1040, 1552, 2064,
Line Rates (DSL line):
2320 kbps
Line Interface:
mDSL Physical
Transformer coupled, 1500 VAC isolation
ETHERNET SPECIFICATIONS
Connection:
Protocol:
RJ-45, 10Base-T 802.3 Ethernet
PPP (RFC 1661) with Bridging Control
(RFC 1638)
Address Aging:
Entries are deleted after 8 minutes of inac-
tivity
Frame Latency:
Frame Buffer:
Ethernet Physical
Connection:
1 Frame
512 Frames
pin 1 TD Data +
pin 2 TD Data -
pin 3 RD Data +
pin 6 RD Data +
pins 4, 5, 7, 8 no connection
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APPENDIX B
PATTON ELECTRONICS MODEL 1088
FACTORY REPLACEMENT PARTS
AND ACCESSORIES
Patton Electronics Model #
Description
1088/I ..............................10BaseT mDSL Rocket (CAP)
48V-PSM.........................DC Power Supply Module
08055DCUI .....................100-240VAC (+5V ±5% reg. DC/2A)
Universal Input Adapter
0805EUR ........................European Power Cord CEE 7 (“A”)
0805UK ...........................United Kingdom Power Cord (“D”)
0805US ...........................American Power Cord (“K”)
0805AUS.........................Australia/New Zealand Power Cord (“C”)
0805DEN.........................Denmark Power Cord (“E”)
0805FR............................France/Belgium Power Cord (“F”)
0805IN.............................India Power Cord (“G”)
0805IS.............................Israel Power Cord (“H”)
0805JAP..........................Japan Power Cord (“J”)
0805SW...........................Switzerland Power Cord (“L”)
07M1088/I .......................User Manual
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