ADTRAN TOTAL ACCESS 4303 Installation and Maintenance

Brand: ADTRAN

Model: TOTAL ACCESS 4303

Type: Installation and Maintenance

ADTRAN TOTAL ACCESS 4303

The ADTRAN TOTAL ACCESS 4303 is a versatile and powerful device that can be used in a variety of applications, including GR 303 concentration and DS0 cross connects. It can also terminate up to 128 DSX-1s, four DS3 signals, or four STS-1 signals from the network to the customer premises.

The ADTRAN TOTAL ACCESS 4303 is designed for installation in a standard 19-inch or 23-inch rack and has a compact design that makes it ideal for space-constrained environments. It also has a wide operating temperature range of 0°C to +50°C, making it suitable for use in a variety of climates.

ADTRAN TOTAL ACCESS 4303

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&RGH3& ) &

7HOHFRPPXQLFDWLRQ&RGH7& ± ±

,QVWDOODWLRQ&RGH,& % ±

Total Access

16151413121110987654321SCU-BSCU-APS-B

PS-A

DC SUPPLY

1200335L1

POWER

TEMP

DC SUPPLY

1200335L1

POWER

TEMP

1200334L1

ONLINE

ACTIVE

LINK

ALARM

ACO

SCU

1200334L1

ONLINE

ACTIVE

LINK

ALARM

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

NTWK MGMT

A MISC B

TRS

TRS ABAB A BAB

AUX1 AUX2

ACO RMT

AUX1 AUX2

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

NTWK MGMT

A MISC B

TRS

TRS ABAB A BAB

AUX1 AUX2

ACO RMT

AUX1 AUX2

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

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

EXT STA CLK

P50 P52 P51

A - IN A - OUT B - IN

P53

B - OUT

NTWK MGMT

A MISC B

TRS

TRS ABAB A BAB

AUX1 AUX2

ACO RMT

AUX1 AUX2

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

NTWK MGMT

A MISC B

TRS

TRS ABAB A BAB

AUX1 AUX2

ACO RMT

AUX1 AUX2

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.

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61200330L2-5B 11

Table 2. Total Access 4303 Chassis Specifications

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12 61200330L2-5B

ADTRAN TOTAL ACCESS 4303 Installation and Maintenance

Brand: ADTRAN

Model: TOTAL ACCESS 4303

Type: Installation and Maintenance

ADTRAN TOTAL ACCESS 4303

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ADTRAN TOTAL ACCESS 4303 Installation and Maintenance

ADTRAN TOTAL ACCESS 4303 Installation and Maintenance

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