Page is loading ...
Section 61200330L2-5B
Issue 2, December 2002
CLEI Code: SLM2MS0F_ _
61200330L2-5B 1
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
Contents
1. GENERAL ............................................................ 1
2. INSTALLATION.................................................. 2
3. POWER CONNECTIONS.................................... 3
4. DATA CONNECTIONS....................................... 5
5. ALARM CONNECTIONS ................................... 7
6. NETWORK MANAGEMENT CONNECTIONS 9
7. SPECIFICATIONS ............................................. 10
8. MAINTENANCE................................................ 10
9. WARRANTY AND CUSTOMER SERVICE.... 10
Figures
Figure 1. Total Access 4303 Chassis......................... 1
Figure 2. Total Access 4303 Power Connections...... 4
Figure 3. Total Access 4303 T1 Clock Connections. 7
Figure 4. Total Access 4303 Alarm Contacts............ 8
Figure 5. Total Access 4303 Management Ports....... 9
Tables
Table 1. Compliance Codes ..................................... 1
Table 2. Total Access 4303 Chassis Specifications 11
1. GENERAL
This document provides installation and maintenance
procedures for the ADTRAN Total Access 4303
Chassis (P/N 1200330L2, see Figure 1).
Revision History
This is the second release of this document. GR-1089-
CORE compliance information was added.
Description
The Total Access 4303 is used in several applications
including GR 303 concentration and DS0 cross
connects.
The chassis terminates up to 128 DSX-1s, four DS3
signals, or four STS-1 signals from the network to the
customer premises.
Total Access 4303 mounts in a standard 19-inch wide
rack or alternately in a 23-inch rack. The shelf measures
7 inches high, 17.5 inches wide, 12 inches deep, and
weighs 22 pounds fully loaded. The shelf’s operating
temperature range is 0°C to +50°C.
Figure 1. Total Access 4303 Chassis
Compliance
Table 1 shows the Compliance Codes for the Total
Access 4303 Chassis. The Total Access 4303 Chassis is
NRTL listed to the applicable UL standards. The Total
Access 4303 Chassis is to be installed in a restricted
access location and in a Type “B” or “E” enclosure
only.
CAUTION
Per GR-1089-CORE October 2002, section 9,
the Total Access 4303 system is designed and
intended only for installation in a DC-C
(common) bonding and grounding system. The
chassis ground wire must be of equal or greater
ampacity than the wire connected to the
-48 VDC return.
The Total Access 4303 system is not intended
or designed for installation in a DC-I (isolated)
bonding and grounding system.
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
Table 1. Compliance Codes
&RGH ,QSXW 2XWSXW
3RZHU&RGH3& ) &
7HOHFRPPXQLFDWLRQ&RGH7& ± ±
,QVWDOODWLRQ&RGH,& % ±
Total Access
16151413121110987654321SCU-BSCU-APS-B
PS-A
DC SUPPLY
1200335L1
POWER
TEMP
DC SUPPLY
1200335L1
POWER
TEMP
C
R
A
F
T
1200334L1
ONLINE
ACTIVE
LINK
ALARM
ACO
ACO
SCU
C
R
A
F
T
1200334L1
ONLINE
ACTIVE
LINK
ALARM
ACO
ACO
SCU
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
ONLINE
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
OCTAL
DSX-1
1202332L1
Total Access
®
4303 Chassis
Installation and Maintenance Practice
2 61200330L2-5B
Changes or modifications not expressly approved by
ADTRAN could void the user’s authority to operate this
equipment.
NOTE
Champ connectors should only be connected to
intra-building wiring and circuits.
NOTE
10/100 BaseT connections should only be con-
nected to intra-building wiring and circuits.
2. INSTALLATION
After unpacking the Total Access 4303 Chassis, inspect
it for damage. If damage has occurred, file a claim with
the carrier, then contact ADTRAN Customer Service
(refer to Warranty and Customer Service on page 10). If
possible, keep the original shipping container for
returning the Total Access 4303 Chassis for repair or for
verification of shipping damage.
Shipping Contents
The contents include the following items:
• Total Access 4303 Chassis
• Total Access 4303 Chassis Job Aid
Electronic modules can be damaged by ESD. Before
handling modules, wear an antistatic discharge wrist
strap to prevent damage to electronic components. Place
modules in antistatic packing material when
transporting or storing. When working on modules,
always place them on an approved antistatic mat that is
electrically grounded.
Tools Required
Required tools for the Total Access 4303 installation are
as follows:
• Wire-wrap tool
• #2 phillips-head screwdriver
• #1 phillips-head screwdriver
• Small straight-slotted screwdriver
• Multimeter
• Crimping tool for power lugs
• Wire strippers
• Side cutters
• 3/16-inch wrench
Material that should be on hand:
• Four screws for mounting each Total Access 4303
shelf to the CO rack
• Shielded 2-wire, twisted pair cross-connect wire
with drain, such as AT&T P7 wire for external
clock(s)
• Insulated 12-gauge wire for power connections, in
colors dictated by the CO for battery to the Total
Access 4303 shelf and return
• Insulated 10-gauge wire for frame ground
• Lugs for the 12-gauge power wire and 10-gauge
frame ground connection
• Data cables terminated at the Total Access 4303
side in 64-pin AMP connectors and at the other end
in stubs
• Coaxial cable appropriate for DS3 or STS-1 net-
work input to the Total Access 4303 shelf, if a DS3
or STS-1 input is to be used
NOTE
To prevent electrical shock, do not install
equipment in a wet location or during a light-
ning storm.
Mounting the Shelf
NOTE
When mounting multiple Total Access 4303
Chassis in the same tack, it is recommended
that a heat baffle and fan assembly be installed
in between Total Access 4303 systems. An ad-
ditional heat baffle should be installed below
the bottom shelf to act as a cool air intake.
Mounting Bracket Orientation
The Total Access 4303 shelf comes with mounting
brackets that can be mounted with the flanges facing
forward or backward in two different locations on the
shelf sides. Therefore, the rack can be flush-mounted or
mid-mounted. The shelf can also be mounted in either a
19-inch rack or a 23-inch rack. Attaching the mounting
brackets to the shelf requires up to four screws on each
side (supplied with the unit). The recommended
mounting methods are as follows:
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
61200330L2-5B 3
19-inch Bay Installation
Flush-mounting: For flush-mounting on the rack, use a
#2 phillips-head screwdriver and attach the mounting
brackets with the flanges facing rearward on the rear
mounting holes.
Mid-mounting: For mid-mounting, use a #2 phillips-
head screwdriver and attach the mounting brackets with
the flanges facing forward on the front mounting holes.
23-inch Bay Installation
For mounting in a 23-inch bay, use a #2 phillips-head
screwdriver and attach the mounting brackets with the
small flange against the chassis.
Flush-mounting: For flush-mounting on the rack, use a
#2 phillips-head screwdriver and attach the mounting
brackets with the large flange facing rearward on the
rear mounting holes.
Mid-mounting: For mid-mounting, use a #2 phillips-
head screwdriver and attach the mounting brackets with
the large flange facing forward on the front mounting
holes.
Installing the Shelf
After attaching the mounting brackets to the Total
Access 4303 shelf sides, use the appropriate screws for
your CO rack type and mount the shelf in the rack as
follows:
Flush-mount
For flush-mount systems, the Total Access 4303 shelf
must be mounted from the rear of the rack, with
mounting bracket flanges facing rearward.
Mid-mount
For mid-mount systems, the Total Access 4303 shelf
must be mounted from the front of the rack, with the
mounting bracket flanges facing forward.
NOTE
Other orientations will require either mounting
from the front or rear, and depend on the rack
type installed in the CO and the standard oper-
ating procedures established by your CO.
Once the orientation of the shelf has been determined,
use the four appropriate screws for the CO rack and
secure the Total Access 4303 shelves in place on the
rack.
3. POWER CONNECTIONS
The backplane contains all I/O connectors, control
signal routing, and power routing, as well as all
necessary interconnections between access modules
and the SCU. No wire wrapping for network or loop
connections is necessary for normal shelf operation.
However, additional wire-wrap terminals on the
backplane accommodate some special modes, such as
alarm relay outputs and external alarm inputs. Detailed
wiring diagrams are provided later in this practice.
All permanent connections to the Total Access 4303 are
made on the backplane. Figure 2 on page 4 shows the
backplane and location of the power and ground
connections.
Frame Ground Connection
The frame ground lug, located on the lower right corner
of the backplane, can accommodate from 6 to 14 AWG
wire. When connecting the frame ground, use a wire
gauge that is at least as heavy as the power wiring. To
make the frame ground connection to Total Access
4303 perform the following steps:
1. Using an appropriate crimping tool and lug, fasten
the lug to the ground wire.
2. Locate a nearby grounding screw on the
equipment rack.
3. Secure the ground wire to frame ground using the
lugged end of the grounding wire.
4. Cut the ground wire length to reach from the
grounding lug on the rack to the Total Access
4303 grounding terminal, located on the lower
right corner of the backplane. Leave enough slack
to allow for tying to the rack, if required.
5. Using wire strippers, strip 5/8-inches of insulation
from the grounding wire.
6. Insert the stripped end of ground wire into the
copper Total Access 4303 grounding terminal.
7. Tighten the ground connection securely with a
straight-slotted screwdriver.
Test Frame Ground Connection
To ensure a good ground, use a multimeter to check
continuity between the frame grounding lug and the
rack grounding strap at the top of the rack. Using a
voltmeter, set to its lowest resistance range. If
applicable, place one lead on the rack’s ground strap
and the other lead on the Total Access 4303 frame
ground terminal. The reading should be 1 or 2 ohms.
Greater readings should be investigated.
4 61200330L2-5B
Figure 2. Total Access 4303 Power Connections
Power Connection
NOTE
Connect to a reliably grounded -48 VDC
source which is electrically isolated from the
AC source.
NOTE
A readily accessible disconnect device, such as
a rack-mount fuse and alarm panel that is suit-
ably approved and rated, should be incorporat-
ed in the fixed wiring.
Dual power buses are provided with separate battery
returns. Power connections use two separate opposing
blocks, labeled TB1 and TB2, located on the lower right
side of the backplane underneath the RX2 AMP
connector (see Figure ). The terminals are on 0.4375
inch centers and allow for wire gauges up to 10 AWG.
There is a separate frame ground terminal, labeled J7,
located on the bottom right side of the backplane, and it
can accommodate up to 6 AWG wire. The two power
inputs, TB1 and TB2, are identical in function and can
be used for redundant power configurations. The frame
ground terminal routes to mechanical contact points and
provides an electrical connection to the chassis
metalwork. The two power buses and frame ground
route to all the cards in the shelf. Plug-in cards are
responsible for their own DC-DC conversion.
After connecting and checking the ground to the Total
Access 4303 shelf, connect power to the shelf. Check to
make sure your power source is providing the correct
power and polarity to the shelf.
To connect power to the shelf perform the following
steps:
1. Determine which fuse pairs are to supply power to
the Total Access 4303 shelf.
2. Remove the fuses from the A and B slots for the
pair determined above.
3. Using a #1 phillips-head screwdriver, remove the
plastic cover to the power terminals. The power
terminals are labeled TB1 and TB2.
4. Cut four lengths of 12 AWG wire to reach from
the terminals on the fuse and alarm panel to the
power terminals on the Total Access 4303 shelf.
Be sure to include enough length to allow for
tying the wire neatly to the frame as specified by
CO SOP.
5. Using the crimping tool, connect an appropriate
lug to each end of the wires.
-48 VDC PRI
-48 VDC RET
-48 VDC SEC
-48 VDC RET
EXT STA CLK
P50 P52 P51
A - IN A - OUT B - IN
P53
B - OUT
+
_
s
+
_
s+
_
s
+
_
s
NTWK MGMT
A MISC B
TRS
TRS ABAB A BAB
AUX1 AUX2
ACO RMT
AUX1 AUX2
NO COM NC
NO COM NC
-48 VDC PRI
-48 VDC RET
-48 VDC SEC
-48 VDC RET
E - NET B E - NET A
NO COM NC NO COM NC NO COM NC
AUD. ALARM OUTPUTS
CRI - A MAJ - A MIN - A
VIS. ALARM
OUTPUTS
CRI - V MAJ - V MIN - V
NO COM NC NO COM NC NO COM NC
TX 4
TX 3
5200330-12A
RX 4
RX 3
RX 2
TX 2
RX 1
TX 1
ADMIN
61200330L2-5B 5
6. Using a screwdriver appropriate for the fuse and
alarm panel terminals, and a straight-slotted
screwdriver for the Total Access 4303 power
terminal, connect the ends of one wire between
the “A” CO -48 VDC supply and the “-48 VDC
PRI” terminal on the Total Access 4303
backplane. Secure the wire to the backplane with
wire tie through the tie anchor.
7. Connect three more power wires, connecting the
“A” CO -48 VDC return with TB1 -48 VDC RET;
“B” CO -48 VDC supply with TB2 -48 VDC
SEC; and “B” CO -48 VDC return with TB2
-48 VDC RET. Secure the wires to the backplane
with wire tie through the tie anchor.
Apply Power and Check Voltage
Before proceeding further, ensure that power has been
correctly applied to the shelf. The proper voltage to
Total Access 4303 is -48 VDC, with an operating range
of -42 VDC to -56 VDC.
WARNING
Installing fuses in the fuse alarm panel at this
stage will provide power to the shelf. There
will be power to pins on the backplane and in-
side the shelf. Exercise caution to avoid elec-
tric shock.
NOTE
The branch circuit overcurrent protection shall
be a fuse or circuit breaker rated for -48 VDC
at 10A. Include the appropriate input current
rating for the product.
1. Install 15 amp fuses in the slots in the fuse and
alarm panel that service the Total Access 4303
shelf.
2. Using a voltmeter, place the common (normally
black) lead on the TB1 -48 VDC RET terminal
and the DC volts (normally red) lead on the TB1
-48 VDC PRI terminal. The reading should be in
the operating range of -42 VDC to -56 VDC, with
a nominal value of -48 VDC. Note the “-” polarity.
3. Using a voltmeter, repeat step 2, using the TB2
-48 VDC SEC terminal.
4. Remove the fuses from the fuse and alarm panel
slots securing Total Access 4303.
4. DATA CONNECTIONS
Removing Rear Plastic Guard
The large rear plastic guard covering the backplane is a
safety feature of the Total Access 4303 designed to keep
personnel and equipment from contacting potentially
high voltage exposed at some backplane locations.
Following the steps outlined below will allow the
service provider to remove the guard once, make all the
necessary Total Access 4303 backplane connections,
and then reinstall the guard.
1. Using a #1 phillips-head screwdriver, remove the
four screws (two at each end) holding the guard in
place.
2. Carefully remove the guard by pulling it away
from the backplane.
NOTE
Wire tie anchors are pre-installed on the back-
plane 64-pin amphenol connector’s cable ends.
It is easier to thread the wire ties through the
anchors while the backplane guard is removed.
ADTRAN recommends using the wire ties
provided to secure the amphenol connectors.
Thread them through the anchors at this time,
with the guard off.
Wiring Clocks
Total Access 4303 accepts T1 clock inputs from one of
two external timing sources.
Connect T1 Clock
An external T1 clock input may be required when
deploying services. The following steps show how to
wire an external T1 clock to a single Total Access 4303.
1. Remove the plastic guard in the top center above
the champ connector labeled TX2.
2. Determine the “+”, “-” and drain or shield wires
from the CO clock source.
3. Using the wire strippers, strip 1 to 1½ inches of
the insulation from the end of the clock source
drop wire.
4. Using the wire-wrap tool, wire wrap the “+” wire
from the clock source to the pin marked “+” on
connector P50, “EXT STA CLK A-IN.”
5. Wire wrap the “-” wire from the clock source to
the pin marked “-” on connector P50, “EXT STA
CLK A-IN.”
6 61200330L2-5B
6. Wire wrap the drain or shield wire from the clock
source to the pin marked ground on connector
P50, “EXT STA CLK A-IN.”
7. Tie the clock source wire neatly to the frame.
8. If a backup source is required, connect as above
except use connector P51, “EXT STA CLK B-
IN.”
Figure 3 on page 7 is an illustration of connecting a T1
clock.
NOTE
Disconnect the Total Access 4303 Chassis
from power before installing the BNC Module.
Connect High-Speed Metallic Interface
If the Total Access 4303 uses a DS3 access module or
STS-1 Access module in either slots 1, 2, 3, or 4 the
shelf has the ability to take its input from network
devices equipped with DS3 or STS-1 interface. The
Network devices are connected to the Total Access
4303 via coaxial cable through a special coaxial adapter
mounted to the right corner of backplane (BNC Access
Module P/N 1200323L1). After attaching the high-
speed metallic interface to the backplane, data cabling
must be installed from the network to route the high-
speed signal to the Total Access 4303. Refer to
DLP-616 for detailed instructions on connecting the
BNC Module.
Wiring to DSX-1
Total Access 4303 receives its DSX-1 feed from the
DSX cross-connect panel in the CO. The female AMP
connectors plug into the rear of the Total Access 4303
shelf on the appropriate male pair connectors (TX1,
TX2, TX3, TX4, RX1, RX2, RX3, and RX4.)
This Installation and Maintenance Practice contains a
full description of the different loop assignments and
pinouts for all the services currently deployed from the
Total Access system.
1. Noting the orientation of the backplane male con-
nection receptacle, push the female cable connec-
tor onto the backplane connector.
2. Using a small straight-slot-head screwdriver, snug
the screw on the right side of the cable connector
into the hole provided on the backplane connector.
Secure the connector in place on the left side by
tightening the wire tie around the body of the
cable connector.
3. Using a side cutter, snip the wire tie end off flush
with the barrel of the tie.
4. Repeat steps 1-4 for each connector on the
backplane being used for the application.
5. Neatly tie off the data cables to the left of the
shelf.
NOTE
All data cables should exit the Total Access
4303 shelf to the left (as viewed from the rear),
and be neatly tied to the frame as per CO SOP.
All other wiring - power, loop test access,
clock, external alarms, etc. - should exit to the
right and be tied off on the right side of the
frame. The ground wire, attached to J7 on the
backplane, should be routed to the nearest suit-
able grounding point.
Replacing Rear Plastic Guard
If the Total Access 4303 shelf has been installed step-
by-step in the order presented, the large plastic guard
may be replaced at this time. The following steps tell
how to replace the rear plastic guard.
1. If using the high-speed metallic interfaces, remove
the break away tabs corresponding to the BNC
Access Modules.
2. Line up the plexiglass guard with the holes
provided for securing it to the backplane. Slight
compression of the guard may be required to fit
the guard below TX2 and TX4, and above RX4
and RX2.
3. Using a #1 phillips-head screwdriver, reattach the
backplane guard to the backplane using the four
phillips-head screws provided (two at each end).
61200330L2-5B 7
Figure 3. Total Access 4303 T1 Clock Connections
5. ALARM CONNECTIONS
The Total Access 4303 provides standard back alarm
outputs. Each of the alarms listed below consists of a
three-pin wire-wrap header that connects to the SCU for
alarm management. The SCU provides the necessary
electronic circuits for a NO/COM/NC contact
arrangement.
The alarms are as follows:
• Critical-Visual
• Major-Visual
• Minor-Visual
• Critical-Audible
• Major-Audible
• Minor-Audible
• AUX-1
• AUX-2
Connecting Alarm Outputs
Depending on the vendor equipment employed at the
CO, wiring external alarms from the Total Access 4303
shelf will vary slightly. The important consideration is
whether the external alarm equipment requires a
normally open (NO) or normally closed (NC) circuit to
pass an alarm. After determining what the CO
equipment requires, connection can be made to the
equipment from the Total Access 4303 shelf. See
Figure 4 on page 8 for the location of alarm contacts.
The following steps are instructions for connecting
alarm outputs to the Total Access 4303.
NOTE
Each three-pin alarm header is wired the same
way for the specified alarm.
1. Determine whether the external alarm reporting
device uses a NO or NC circuit for alarm relay.
2. Using standard Telco cross-connect wire,
determine and cut the length required to reach
from the alarm headers to the alarm-reporting
device.
EXT STA CLK
P50 P52 P51
A - IN A - OUT B - IN
P53
B - OUT
+
_
s
+
_
s+
_
s
+
_
s
NTWK MGMT
A MISC B
TRS
TRS ABAB A BAB
AUX1 AUX2
ACO RMT
AUX1 AUX2
NO COM NC
NO COM NC
-48 VDC PRI
-48 VDC RET
-48 VDC SEC
-48 VDC RET
E - NET B E - NET A
NO COM NC NO COM NC NO COM NC
AUD. ALARM OUTPUTS
CRI - A MAJ - A MIN - A
VIS. ALARM
OUTPUTS
CRI - V MAJ - V MIN - V
NO COM NC NO COM NC NO COM NC
TX 4
TX 3
5200330-12A
RX 4
RX 3
RX 2
TX 2
RX 1
TX 1
ADMIN
P50 P52 P51
A - IN A - OUT B - IN
P53
B - OUT
_
s
+
_
s+
_
s
+
_
s
Primary T1
Clock Source
R+ T S
Secondary T1
Clock Source
R+ T S
EXT STA CLK
8 61200330L2-5B
Figure 4. Total Access 4303 Alarm Contacts
3. Using wire strippers, strip 1 to 2 inches from both
ends of the wire.
4. Using a wire-wrap gun, wire wrap one strand to
the center pin (common) from the Total Access
alarm relay header, and the other strand to either
the NO or NC pin on the relay header.
5. Using the appropriate wire wraps or lugs, connect
the two wires to the appropriate terminals on the
external alarm relay device being used.
Connecting Miscellaneous Alarm Inputs
There are three additional external alarm inputs that can
be reported to the SCU on the Total Access 4303 shelf
(see Figure 4). These are marked RMT, AUX1 and
AUX2. Terminal B supplies a -48 VDC source.
Terminal A expects -48 VDC if an alarm condition
exists on the alarmed equipment.
The following steps should be used to connect an
external alarm input to the shelf:
1. If the long, thin plastic guard is still in place,
remove it using a #1 phillips-head screwdriver.
2. Choose an alarm header set from the EXT
INPUTS block, P54, on the middle bottom of the
Total Access 4303 backplane.
3. Using standard Telco cross-connect wire,
determine and cut the length required to reach
from the alarmed piece of equipment to the header
chosen in step 2. Allow length for 1 to 2 inches of
stripped wire for wire wrap, and neat routing out
from the Total Access 4303 shelf.
4. Using wire strippers, strip 1 to 2 inches from both
ends of the wire.
NOTE
Omit step 6 (below) if the alarmed piece of
equipment has its own source of -48 VDC and
doesn’t need the -48 VDC feed from the Total
Access 4303 shelf. The Total Access 4303
shelf expects to see -48 VDC on pin A of the
alarm pair when an alarm condition exists.
5. Using a wire-wrap gun, wire wrap one wire to the
B pin of the Total Access 4303 AUX1 header
(P54), and the other end to the alarmed unit alarm
terminal marked “B”.
6. Wire wrap one end of the second wire to the A pin
of the Total Access 4303 alarm header (P54) and
the other end to the appropriate equipment alarm
terminal.
NO COM NC NO COM NC NO COM NC
AUD. ALARM OUTPUTS
CRI - A MAJ - A MIN - A
VIS. ALARM
OUTPUTS
CRI - V MAJ - V MIN - V
NO COM NC NO COM NC NO COM NC
A MISC B
TRS
TRS ABAB A BAB
AUX1 AUX2
ACO RMT
AUX1 AUX2
NO COM NC
NO COM NC
EXT STA CLK
P50 P52 P51
A - IN A - OUT B - IN
P53
B - OUT
+
_
s
+
_
s+
_
s
+
_
s
NTWK MGMT
A MISC B
TRS
TRS ABAB A BAB
AUX1 AUX2
ACO RMT
AUX1 AUX2
NO COM NC
NO COM NC
-48 VDC PRI
-48 VDC RET
-48 VDC SEC
-48 VDC RET
E - NET B E - NET A
NO COM NC NO COM NC NO COM NC
AUD. ALARM OUTPUTS
CRI - A MAJ - A MIN - A
VIS. ALARM
OUTPUTS
CRI - V MAJ - V MIN - V
NO COM NC NO COM NC NO COM NC
TX 4
TX 3
5200330-12A
RX 4
RX 3
RX 2
TX 2
RX 1
TX 1
ADMIN
61200330L2-5B 9
7. Using a #1 phillips-head screwdriver, replace the
long thin plastic guard using the two screws
provided.
NOTE
Check with the equipment manufacturer for
exact alarm markings.
6. NETWORK MANAGEMENT CONNECTIONS
The Total Access 4303 shelf integrates onto the
backplane several different management ports to allow
for remote management of the shelf (see Figure 5). The
management interface is on the SCU (refer to the Total
Access 4303 System Manual, Section 1, System
Description).
Two methods can be used to perform remote
management:
1. SNMP over Ethernet
2. Telnet
Connecting an External Modem
Total Access 4303 can be accessed and managed via
modem, allowing the same capabilities to a user as if he
were connected to the local craft access port on the front
of the SCU. Access is provided by a DB-25 connector,
J10, and labeled “ADMIN,” located on the upper right
corner of the backplane.
Figure 5. Total Access 4303 Management Ports
EXT STA CLK
P50 P52 P51
A - IN A - OUT B - IN
P53
B - OUT
+
_
s
+
_
s+
_
s
+
_
s
NTWK MGMT
A MISC B
TRS
TRS ABAB A BAB
AUX1 AUX2
ACO RMT
AUX1 AUX2
NO COM NC
NO COM NC
-48 VDC PRI
-48 VDC RET
-48 VDC SEC
-48 VDC RET
E - NET B E - NET A
NO COM NC NO COM NC NO COM NC
AUD. ALARM OUTPUTS
CRI - A MAJ - A MIN - A
VIS. ALARM
OUTPUTS
CRI - V MAJ - V MIN - V
NO COM NC NO COM NC NO COM NC
TX 4
TX 3
5200330-12A
RX 4
RX 3
RX 2
TX 2
RX 1
TX 1
ADMIN
E - NET B E - NET A
ADMIN
10 61200330L2-5B
The following steps are instructions for connecting an
external modem to the Total Access 4303.
1. Mount the modem in its permanent position.
2. Connect power to the modem using manufacturer
instructions
3. Configure the modem to be used as follows:
4. Connect the male DB-25 connector end of the data
cable to the female DB-25 connector, J10, labeled
“ADMIN,” located on the upper right corner of
the Total Access 4303 backplane; screw down the
cable.
5. Route the data cable to the modem.
6. Connect the other end of the cable to the modem
configured in step 3.
7. Connect the modem to the POTS line as required
by the manufacturer.
NOTE
To complete the connection to the Total Access
4303 shelf, the Total Access 4303 must now be
called from a PC configured as a VT100 termi-
nal.
Connect 10/100BaseT
Total Access 4303 can provide SNMP management
capability over Ethernet. The Total Access 4303 SCU
has a built-in Ethernet interface, and the shelf is ready
to connect to the network. Access to the network is via
an RJ-45 10BaseT connector, labeled “E-NET,” located
on the lower right side of the backplane.
To connect the Total Access 4303 shelf to the Ethernet
segment, simply plug the male RJ-45 modular
connector into the female RJ-45 port on the Total
Access 4303 backplane. When planning a cable run to
the Total Access 4303 shelf, be sure to allow enough
cable for routing the cable to the right from the
backplane connector to the frame, and for neat tie-off in
accordance with CO SOP.
7. SPECIFICATIONS
Specifications for the Total Access 4303 Chassis are
detailed in Table 2 on page 11.
8. MAINTENANCE
The Total Access 4303 Chassis requires no routine
maintenance to operate properly.
ADTRAN does not recommend that repairs be
performed in the field. Repair services may be obtained
by returning the defective unit to ADTRAN. Refer to
the Warranty and Customer Service section for further
information.
Conduct tests and maintenance for the specific modules
in accordance with the recommendations and
procedures prescribed by the documentation of each
specific module.
9. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within the
warranty period if it does not meet its published
specifications or fails while in service. Warranty
information can be found at www.adtran.com/warranty
.
USA and Canadian customers can also receive a copy of
the warranty via ADTRAN's toll free faxback server,
877-457-5007. Carrier Networks Warranty - Document
414. Enterprise Networks Warranty - Document 901.
6SHHG ESV
'DWDELWV
3DULW\ QRQH
6WRSELWV
)ORZFRQWURO RIIRUQRQH
$XWR$QVZHU RQ
'75 LJQRUH
576 LJQRUH
61200330L2-5B 11
Table 2. Total Access 4303 Chassis Specifications
*HQHUDO
3RZHU6XSSO\6ORWV
6&86ORWV
2SWLRQ0RGXOH6ORWV
5DFNPRXQW
36DQG36%
6&8$DQG6&8%
0RXQWVLQLQRULQUDFN
3K\VLFDO
'LPHQVLRQV
,QGLYLGXDO&KDVVLV:HLJKW
)XOO\/RDGHG6KHOI:HLJKW
LQ+[LQ:[LQ'
UDFNXQLWVXKLJK
OEV
OEV
3RZHU
,QSXW9ROWDJH
3RZHU'LVVLSDWLRQ
9'&WR9'&
ZDWWVPD[LPXPIXOO\HTXLSSHG
&RPSOLDQFH
)&&3DUW
8/
1(%6/HYHO
3DUW1XPEHU
7RWDO$FFHVV7RWDO$FFHVV&KDVVLV /
12 61200330L2-5B
/
