ADTRAN Total Access 1500 Chassis 1180001L1 Instruction Manual

®
Section 61180001L1#S-5D
Issue 4, February 2009
CLEI Code: VAM5K00F_ _
61180001L1#S-5D 1
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
Figure 1. Total Access 1500 Chassis
CONTENTS
1. General .................................................................... 1
2. Installation............................................................... 3
3. Maintenance .......................................................... 12
4. Warranty and Customer Service ........................... 14
5. Specifications ........................................................ 14
FIGURES
Figure 1. Total Access 1500 Chassis .......................... 1
Figure 2. Flush-Mount Bracket Orientation................ 3
Figure 3. Mid-Mount Bracket Orientation .................. 4
Figure 4. Power and Ground Connectors.................... 4
Figure 5. Total Access 1500 Backplane and Pinouts.. 6
Figure 6. Ring Generator Connector ........................... 7
Figure 7. Redundant Composite Clock Wiring........... 8
Figure 8. Daisy-Chained Composite Clock Wiring .... 9
Figure 9. Alarm Contacts .......................................... 10
Figure 10. RS-485 Wiring......................................... 13
TABLES
Table 1. Compliance Codes ........................................ 2
Table 2. Total Access 1500 Chassis Specifications .. 14
1. GENERAL
This practice is an installation and maintenance guide
for the ADTRAN Total Access®1500 Chassis
(P/N 1180001L1#S), illustrated in Figure 1.
Revision History
This is the fourth issue of this practice. This release adds
a note concerning wiring of the Composite clock input
when using the 1180009L1 Dual LIU and the
1180109L1 Quad LIUs. (See Data Connections on
page 7.)
Features
The basic features of the Total Access 1500 Total
Access 1500 Chassis include the following:
• Rackmount design
• Scalable network connectivity
• 1-5 T1 capacity (4 T1s and a Protect T1 for TR-08
applications using a Quad LIU)
• Three common units:
– Power Supply/Ring Generator (PSU/RGU)
– System Controller Unit (SCU)
– Line Interface Unit (LIU)
• T1 Network Interface
• 24 slots for combination of voice and data services
• Variety of access module units
• Network management capabilities (TL1, SNMP)
• Multiple configuration arrangements
• TR-08 compatible (Modes 1, 2, and 3)
• Supports Mechanized Loop Testing (MLT)
• NRTL Safety Listed and FCC compliant
• Meets NEBS Level 3 requirements
General Description
The Total Access 1500 Chassis is designed to meet a
variety of operating configurations and services, such as
POTS and Special Services. The Total Access 1500 is
intended for use in central office, remote terminal, and
customer premise applications. The Total Access 1500
System is comprised of the chassis, common cards, and
access modules.
Physical Description
The Total Access 1500 chassis is 23 inches wide by
3.50 inches high by 10.75 inches deep and is made of
heavy gauge metal. The unit mounts in a standard 23-
inch wide rack.
1500
PSU-A PSU-APSU-B SCU 1 2 3 4 5 6 7 8 9 10 11 12 1413 15 16 17 18 19 20 21 22 23 24LIU-B
SCU
1180008L2
HST
MLT
BSY
MJR
T
I
M
I
N
G
C
R
A
F
T
MNR
RMT
ACO
LIU
1180109L1
A
C
P
YEL
REM
MASTER
R
D
RED
RCV
TEST
STATUS
TX
MONITOR
RX
LIU
1180109L1
A
C
P
YEL
REM
MASTER
R
D
RED
RCV
TEST
STATUS
TX
MONITOR
RX
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
POTS RT
1180408L1
BUSY
1
2
3
4
Total Access 1500 Chassis
Installation and Maintenance Practice

2 Issue 4, February 2009 61180001L1#S-5D
Common Modules
The Common Modules supported by the Total Access
1500 are described below.
PSU/RGU
The Power Supply Unit/Ring Generator Unit (PSU/
RGU) receives –48 VDC from an external source to
provide all necessary voltages required by the other
common modules and channel units. Two PSU/RGUs
may be installed to provide fully redundant operation.
Through switch mode operation, either PSU converts
the incoming –48 VDC to regulated +5 VDC, +3.3
VDC and unregulated –7.5 VDC, –24 VDC, and –48
VDC for distribution to the other modules. Ring voltage
circuitry within the PSU generates 105 Vrms nominal,
20 Hz ring voltage for distribution to the channel bank’s
voice cards. Ring voltage is disabled by removing the 5-
amp GMT front panel fuse labeled 20Hz. The PSU/
RGU does not require provisioning prior to insertion
into the channel bank.
SCU
The System Controller Unit (SCU) provides network
management capability for the channel bank. The SCU
is used to provision, test, and determine status for any
module in the channel bank. It is also available in COT
and RT versions with Mechanized Loop Testing. The
front panel has a craft interface, test equipment timing
output, alarm and status indicators, plus an ACO (Alarm
Cut-Off) switch.
LIU
The Line Interface Unit (LIU) terminates up to 4 T1
lines, with a separate T1 that is included for protection
switching with the Quad LIU or two T1 lines with the
Dual LIU. The LIU generates control signals and clocks
used by the channel units, and controls both manual and
remotely initiated T1 loopbacks. It detects alarm condi-
tions and reports the alarm status to the SCU. The front
panel has a dual bantam jack for T1 test access, status
LEDs, and a STATUS pushbutton.
Access Modules
Total Access 1500 incorporates a complete array of
local loop access technologies into an integrated intelli-
gence system. Most access modules occupy one slot in
the Total Access chassis.
The access modules supported by Total Access 1500 are
listed in the Total Access 1500 System Manual
(P/N 61180001L1#S-1). Refer to individual Installation
and Maintenance Practices and Job Aids for detailed
information on installation, testing, operation, mainte-
nance, and troubleshooting.
WARNING
If using two (redundant mode) List 2 Quad
LIUs (P/N 1180109L2) in the Total Access
1500 chassis, do not metallically connect the
T1 (DSX-1) to interfaces that connect to the
Outside Plant or its wiring. These interfaces
are designed for use as intra-building inter-
faces only. The addition of Primary Protectors
is not sufficient protection to connect these
interfaces metallically to OSP wiring.
It is permissible to connect the T1 (DS-1)
interface metallically to the OSP if only one
LIU (non-redundant mode) is to be used at any
time in the Total Access 1500 chassis.
Compliance Codes
Table 1 shows the Compliance Codes for the Total
Access 1500 Chassis. The Total Access 1500 Chassis is
NRTL listed to the applicable UL standards.
NOTE
This product is intended for installation in
Restricted Access Locations only.
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.
Changes or modifications not expressly approved by
ADTRAN could void the user’s authority to operate this
equipment.
Table 1. Compliance Codes
Code Input Output
Power Code (PC) F C
Telecommunication Code (TC) X X
Installation Code (IC) B –

61180001L1#S-5D Issue 4, February 2009 3
2. INSTALLATION
CAUTION
Electronic modules can be damaged by static
electrical discharge. 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.
Remove the Total Access 1500 Chassis from the carton
and visually ensure that damage has not occurred during
shipping or handling. If damage has occurred, file a
claim with the carrier, then contact ADTRAN. Refer to
the Warranty and Customer Service section.
WARNING
To prevent electrical shock, do not install
equipment in a wet location or during a
lightning storm.
Tools Required
The required tools for the Total Access 1500 Chassis
installation are as follows:
• Wire-wrap tool
• #2 phillips-head screwdriver
• #1 phillips-head screwdriver
• Straight-slot-head screwdriver
• Multimeter
• Crimping tool for power lugs
• Wire strippers
• Side cutters
• 3/16-inch wrench
Materials that should be on hand include the following:
• Four screws for mounting each Total Access 1500
chassis to the rack
• Shielded 2-wire, twisted pair cross-connect wire
with drain, such as AT&T P7 wire
• Insulated wire for power connections
• Insulated wire for frame ground
• Lugs for the power wire and Frame Ground
connection
Unpack and Inspect the Shelf
Each Total Access 1500 shelf is shipped in its own
cardboard shipping carton unless it was ordered as a
fully racked cabinet or wall mount system. Open each
carton carefully and avoid cutting too deep into the
carton with sharp objects.
Mounting the Shelf
The Total Access 1500 shelf can be flush-mounted or
mid-mounted.
Mounting Bracket Orientation
The Total Access 1500 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. Attaching the mounting brackets to the
shelf requires four screws on each side, and are supplied
with the unit.
The following are the recommended ways to mount the
shelf:
• Flush-mount: To flush-mount a shelf in the rack,
use a #2 phillips-head screwdriver and attach the
mounting brackets (see Figure 2) with the flanges
containing the slotted rack-mounting holes facing
the front of the Total Access 1500 shelf. The
mounting brackets should be attached using the set
of mounting bracket holes closest to the rear of the
Total Access 1500 shelf.
Figure 2. Flush-Mount Bracket Orientation
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
24
23
22
21

4 Issue 4, February 2009 61180001L1#S-5D
• Mid-mount: To mid-mount a shelf in the rack, use a
#2 phillips-head screwdriver and attach the mount-
ing brackets (see Figure 3) with the flanges
containing the slotted rack-mounting holes facing
the rear of the Total Access 1500 shelf. The mount-
ing brackets should be attached using the set of
mounting bracket holes closest to the front of the
Total Access 1500 shelf.
Figure 3. Mid-Mount Bracket Orientation
Installing the Chassis
After attaching the mounting brackets to the Total
Access 1500 Chassis, use the appropriate screws for the
Central Office rack type and mount the chassis in the
rack as follows:
1. Flush-mount: For flush-mount systems, the Total
Access 1500 chassis must be mounted from the
rear of the rack, with mounting bracket flanges
facing rearward.
2. Mid-mount: For mid-mount systems, the Total
Access 1500 chassis 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
operating procedures established by your CO.
Once the orientation of the chassis has been determined,
use four screws suitable to the CO rack and an appro-
priate screwdriver to secure the Total Access 1500
chassis in place on the rack.
Connections
Interconnections between the common card modules
and channel units are accomplished through the
backplane PCB. All external connections to the Total
Access 1500 are through connectors and wire-wrap
headers located on the backplane.
NOTE
When connecting power and ground wiring, be
sure to follow all local, national, and company
codes.
CAUTION
Per GR-1089-CORE October 2002, section 9,
this system is designed and intended only for
installation in a DC-C (common) Bonding and
Grounding System. It is not intended or
designed for installation in a DC-I (isolated)
Bonding and Grounding system.
All permanent connections to the Total Access 1500 are
made on the backplane. Figure 4 shows the location of
the power and ground connections, and Figure 5 shows
the backplane and pinouts.
Figure 4. Power and Ground Connectors
24
23
22
21
TB1
Pin Number Description
1 -48V IN SEC
2 -48V RTN SEC
3 -48V IN PRI
4 -48V RTN PRI
5 Frame Ground
TB1
IN IN
RTN RTN
IN RTN
-48V PRI
IN RTN
-48V SEC

61180001L1#S-5D Issue 4, February 2009 5
Frame Ground Connection
The frame ground terminal, located on the upper right
corner of the backplane (see Figure 4 and Figure 5),
should be connected using appropriately sized wire. Use
a wire gauge that is at least the same gauge as the power
wiring.
To make the frame ground connection to the Total
Access 1500, perform the following steps:
1. Using the crimping tool, connect an appropriate
lug to each end of the appropriately sized wire.
2. Connect the ground wire from Total Access 1500
Frame ground terminal to the Equipment Rack
grounding screw.
3. Tighten the ground connection securely with a
straight-slot 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
ohmmeter, if applicable set to its the lowest resistance
range, place one lead on the rack’s ground strap and the
other lead on the Total Access 1500 frame ground
terminal. The reading should be 1 or 2 ohms. Greater
readings should be investigated.
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 rackmount fuse and alarm panel that is
suitably approved and rated, should be incor-
porated in the fixed wiring.
Power connections use a block, labeled TB1, located on
the upper right side of the backplane (see Figure 4 and
Figure 5). The terminals are on 0.375 inch centers and
allow for wire gauges up to 12 AWG. The Frame
Ground terminal routes to mechanical contact points
and provides an electrical connection to the chassis
metalwork. The power bus and frame ground route to all
the cards in the shelf.
The number of shelves that can be placed in a 7-foot
central office rack depends on the type of service
deployed and the number of access modules in the shelf.
After connecting and checking the ground to the Total
Access 1500 shelf, connect power to the shelf. Check to
make sure your power source is providing the correct
power and polarity to the shelf.
The following steps provide instructions on how to
connect power to the shelf.
1. Determine which fuse pairs are to supply power to
the Total Access 1500 shelf.
2. Remove the fuses from the A and B slots for the
pair.
3. The power terminal is labeled TB1. Cut four
lengths of appropriately sized wire to reach from
the terminals on the fuse and alarm panel to the
power terminals on the Total Access 1500 shelf.
4. Using the crimping tool, connect an appropriate
lug to each end of the wires.
5. Using a screwdriver appropriate for the fuse and
alarm panel terminals, and a straight slot or phillips
screwdriver for the Total Access 1500 power
terminal, connect the ends of one wire between the
“A” CO –48 VDC supply and the –48V PRI IN
terminal on the Total Access 1500 backplane.
6. Connect three more power wires, connecting the
“A” CO –48 VDC return with –48V PRI RTN; “B”
CO –48 VDC supply with –48 V SEC IN; and “B”
CO –48 VDC RTN with –48V SEC RTN.

6 Issue 4, February 2009 61180001L1#S-5D
T
Figure 5. Total Access 1500 Backplane and Pinouts
RS-232 (J34) Pin Number Description 1 Frame Ground 2 TxD 3 RxD 4 RTS 5 CTS 6 DSR 7 GND 8 DCD 9 No Connect 10 No Connect 11 No Connect 12 No Connect 13 No Connect 14 No Connect 15 TXC 16 No Connect 17 RXC 18 No Connect 19 No Connect 20 DTR 21 No Connect 22 No Connect 23 No Connect 24 EXTC 25 No Connect Ethernet (J33) Pin Number Description 1 ETHRTX + 2 ETHRTX - 3 ETHRRX + 4 X 5 X 6 ETHRRX - 7 X 8 X
Amphenol Connectors Pin Number P1, P2, P3, P4 P5 1 Ring – Ch Slot 1 MLT RA 2 Ring – Ch Slot 2 MLT RB 3 Ring – Ch Slot 3 MLT RC 4 Ring – Ch Slot 4 MLT RD 5 Ring – Ch Slot 5 SLV B 6 Ring – Ch Slot 6 SLV D 7 Ring – Ch Slot 7 OH B 8 Ring – Ch Slot 8 OH D 9 Ring – Ch Slot 9 PROC B 10 Ring – Ch Slot 10 PROC D 11 Ring – Ch Slot 11 LOCK B 12 Ring – Ch Slot 12 LOCK D 13 Ring – Ch Slot 13 SMAS RA 14 Ring – Ch Slot 14 SMAS RB 15 Ring – Ch Slot 15 SMAS RC 16 Ring – Ch Slot 16 SMAS RD 17 Ring – Ch Slot 17 TMAJ 18 Ring – Ch Slot 18 No Connect 19 Ring – Ch Slot 19 No Connect 20 Ring – Ch Slot 20 No Connect 21 Ring – Ch Slot 21 No Connect 22 Ring – Ch Slot 22 SEZBY 23 Ring – Ch Slot 23 No Connect 24 Ring – Ch Slot 24 No Connect 25 No Connect No Connect
Alarm (P13) Pin Number Description 1 AUX1 A 2 AUX1 B 3 AUX2 A 4 AUX2 B 5 VMJ(T1A)NO 6 VMJ(T1A)COM 7 VMJ(T1A)NC 8 VMN(T1B)NO 9 VMN(T1B)COM 10 VMN(T1B)NC 11 AMJ(T1C)NO 12 AMJ(T1C)COM 13 AMJ(T1C)NC 14 AMN(T1D)NO 15 AMN(T1D)COM 16 AMN(T1D)NC 17 AUX(BANK)NO 18 AUX(BANK)NO 19 AUX(BANK)NC 20 PWRCOM 21 PWRNO
Composite Clock (P14)
Pin Number Description 1 CLKINS+ 2 CLKINS- 3 Frame Ground 4 CLKOUTS+ 5 CLKOUTS- 6 Frame Ground 7 CLKINP+ 8 CLKINP- 9 Frame Ground 10 CLKOUTP+ 11 CLKOUTP- 12 Frame Ground
TB1 Pin Number Description 1 -48V IN SEC 2 -48V RTN SEC 3 -48V IN PRI 4 -48V RTN PRI 5 Frame Ground
LOCCK/RS-485 (P12) Pin Number Description 1 LOCCK+ 2 LOCCK- 3 RS-485 A 4 RS-485 B 5 Frame Ground
TB2
Pin Number Description 1 Frame Ground 2 20 HZ RTN 3 20 HZ EXT
Metallic Loop Test Bypass Pair (P6) Pin Number Description 1 BYPASS TIP 2 BYPASS RING 3 INHIBIT 4 Frame Ground
T1 Connections Pin Number P7 – Protect P8 – T1 D P9 – T1 C P10 – T1 B P11 – T1 A 1 T Protect T D T C T B T A 2 R Protect R D R C R B R A 3 T1 Protect T1 T1 C T1 B T1 A 4 R1 Protect R1 D R1 C R1 B R1 A 5 Frame Frame Frame Frame Frame
Ground Ground Ground Ground Ground
T/R = Transmit = OUT T1/R1 = Receive = IN
Amphenol Connectors Pin Number P1, P2, P3, P4 P5 26 Tip – Ch Slot 1 MLT TA 27 Tip – Ch Slot 2 MLT TB 28 Tip – Ch Slot 3 MLT TC 29 Tip – Ch Slot 4 MLT TD 30 Tip – Ch Slot 5 SLV A 31 Tip – Ch Slot 6 SLV C 32 Tip – Ch Slot 7 OH A 33 Tip – Ch Slot 8 OH C 34 Tip – Ch Slot 9 PROC A 35 Tip – Ch Slot 10 PROC C 36 Tip – Ch Slot 11 LOCK A 37 Tip – Ch Slot 12 LOCK C 38 Tip – Ch Slot 13 SMAS TA 39 Tip – Ch Slot 14 SMAS TB 40 Tip – Ch Slot 15 SMAS TC 41 Tip – Ch Slot 16 SMAS TD 42 Tip – Ch Slot 17 TSTALM 43 Tip – Ch Slot 18 No Connect 44 Tip – Ch Slot 19 No Connect 45 Tip – Ch Slot 20 No Connect 46 Tip – Ch Slot 21 No Connect 47 Tip – Ch Slot 22 SEIZE 48 Tip – Ch Slot 23 No Connect 49 Tip – Ch Slot 24 No Connect 50 No Connect No Connect
J33
T / RP1
25
50 26
1
T1 / R1P2 M / SBPAIR 1 PAIR 2 PAIR 4P4 PGTC
IN
OUT
SW3SW1
O
N
O
N
TERMS
CLKINS
CLK TERMP
CLK
1
+ – + – + –
CLKOUTS CLKINP AUX3 AUX4
A B A B
P18
211
12
1
1
NO COM NC AUX (BANK)AMN( T1D)
NO COM NC
AMJ( T1C)
NO COM NC
VMN( T1B)
NO COM NC
VMJ( T1A)
A B
AUX2
A B
AUX1 NO COM NC PWR
COM
P13P14
A
T R T1 R1
1
1 P11 5 1 P10 5 1 P9 5 1 P8 5 1 P7 5
E-NET BYPASS
2 0
H
Z
R
T
N
B
T R T1 R1 C
T R T1 R1 D
T R T1 R1 P
T R T1 R1
RS485
T R I
IN
IN
RTN
RTN
P6
D2
D1
TB
3 TB2
SMAS
MLT
25
50 26
1
E / SGP3 PAIR 3
25
50 26
125
50 26
125
50 26
1
LOCCK
O
N
EN
RS485 J34
MGMT
DIS
SW2
A B
P12
+ –
+ –
CLKOUTP PWR
NO
IN RTN
-48 V PRI
IN RTN
-48 V SEC

61180001L1#S-5D Issue 4, February 2009 7
Apply Power and Check Voltage
Before proceeding further, ensure that power has been
correctly applied to the shelf. The proper voltage to
Total Access 1500 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
inside the shelf. Exercise caution to avoid
electric shock.
The chassis may be powered by multiple
power sources. Disconnect all sources prior to
servicing.
NOTE
The branch circuit overcurrent protection shall
be a fuse or circuit breaker rated for a
maximum of –48 VDC @ 5.0 A. Include the
appropriate input current rating for the
product.
1. Install appropriate fuses (5 amp max) in the slots in
the fuse and alarm panel that services the Total
Access 1500 shelf.
2. Using a voltmeter, place the common (normally
black) lead on the TB1 –48 V PRI RTN terminal
and the DC volts (normally red) lead on the TB1
–48 V PRI IN terminal. The reading should be in
the operating range of –42 VDC to –56 VDC, with
a nominal value of –48 VDC. Note the “negative”
polarity.
3. Using a voltmeter, test the connection using the
TB1 –48V SEC RTN terminal and the TB1 –48V
SEC IN terminal.
4. Remove the fuses from the fuse and alarm panel
slots that provide power to the Total Access 1500.
Ring Generator
The system operates with either an internal or external
ring generator. For external ring generator applications,
TB2 (see Figure 6) provides connections for ringing
voltage (pin 3), ringing return (pin 2), and frame ground
(pin 1).
Figure 6. Ring Generator Connector
Data Connections
An external composite clock input is required in the
Central Office Terminal (COT) when deploying digital
services from Total Access 1500.
NOTE
The 1180009L1 Dual LIU and the 1180109L1
Quad LIU have only one Composite clock
input. When using one of these LIUs, wire the
Composite clock to the Secondary Composite
CLKINS pins, and set the termination
dipswitch to the Secondary position (SW1,
CLK TERMS to IN and SW3, CLK TERMP to
OUT).
Also, when using either the 1180009L1 or
1180109L1 LIUs running multiple shelves off
of the same clock, wire the clock into the
Secondary clock input pins (CLKINS) and out
of the Secondary CLK output pins
(CLKOUTS).
The following steps provide instruction on how to wire
primary and secondary external composite clock to a
single Total Access 1500.
1. Determine the “+”, “–” and drain or ground wires
from the CO clock source.
2. Using wire strippers, strip 1 to 1-1/2 inches of the
insulation from the end of the clock source twisted
pair, shielded, drop wire.
3. Using the wire-wrap tool, wire wrap the “+” wire
from the clock source to the pin marked “+” on
connector P14, CLKINP.
2
0
H
Z
R
T
N
3 TB2
1

8 Issue 4, February 2009 61180001L1#S-5D
4. Wire wrap the “–” wire from the clock source to
the pin marked “–” on connector P14, CLKINP.
5. Wire wrap the drain or shield wire from the clock
source to the pin marked as ground on connector
P14, CLKINP.
6. Tie the clock source wire neatly to the frame.
7. On SW3 mounted to the right of P14, move the
switch to the IN position.
8. Repeat steps 1 - 7 for secondary clock to connector
P14, CLKINS, but set SW1 to the IN position
instead of SW3 in step 7.
Figure 7 illustrates an individual Total Access 1500
shelf utilizing redundant timing.
Figure 7. Redundant Composite Clock Wiring
Up to 14 dual LIU systems or 28 single LIU systems
may be daisy chained to a single output from the timing
source, so only one wire run is required from the timing
source for an installation of up to 14 or 28 Total Access
1500 shelves. Use wire of the same type as was used for
the wire run from the CO clock source to the Total
Access 1500 shelf.
The following steps provide instructions for connecting
up to 14 or 28 Total Access 1500 shelves to a single
external timing source.
1. Determine the length of wire required to run from
the first shelf, connector P14, to the second shelf,
connector P14, which is to be wired in the same
daisy chain. Leave approximately 1 to 1-1/2 inches
for wire wrapping.
2. Using wire strippers, strip approximately 1 to
1-1/2 inches from both ends of the wire run.
3. Using a wire-wrap tool, wire wrap the “+”, “–” and
drain wires to the “+”, “–” and ground terminal
pins of connector P14, CLKOUTP, on the top of the
backplane.
4. Run the wire from P14 on the “source” shelf to
connector P14, CLKINP, on the “receiving” shelf.
5. Wire wrap the “+”, “–” of the wire run to the “+”,
“–” terminals of P14 on the “receiving” shelf.
6. Set SW3 on the “source” shelf to the IN position,
and Set SW3 on the “receiving” shelf to the OUT
position.
NOTE
In any daisy chain of Total Access 1500
shelves using a single timing source, only the
first shelf in the chain should have the SW3
switch set to IN. All the remaining shelves in
the chain should have SW3 set to OUT.
7. Repeat steps 1 - 6 for each Total Access 1500 shelf
that is to be interconnected on the single CO timing
source.
8. Repeat steps 1 - 7 for secondary clock.
NOTE
If connecting the secondary clock source, set
SW1 to the SW3 settings.
Figure 8 illustrates a daisy-chained composite clock
configuration.
External Clock Output
Because some applications may require the shelf to
provide source timing, an additional connection is
provided at P12 labeled LOCCK (+, -) to provide a
64 kHz composite clock output. This output clock can
be used as a timing source for up to 14 dual LIU systems
or 28 single LIU systems.
Wiring Test Access
A four-lead (T, R, I, and drain) common test access bus
is provided for metallic test access to all customer loops
and is labeled P6 on the backplane. If the Total Access
1500 being installed will use these testing features,
wiring will be required to gain access to the test leads.
CO TIMING
J33
T/ RP1
25
50 26
1
T1/ R1P2 M/ SBPAIR1 PAIR2 PAIR4P4 PGTC
IN
OUT
SW3SW1
O
N
O
N
O
N
TERM
CLK IN
CLK TERMPCLK
1
+ – + – + –
CLK OUT CLKINP AUX3 RMT
A B A B
P18
211
12
1
1
NO COM NC AUX (BANK)AMN(T1D)
NO COM NC
AMJ(T1C)
NO COM NC
VMN(T 1 B )
NO COM NC
VMJ(T 1 A )
A B
AUX2
A B
AUX1 NO COM NC -48
ALM
P13P14
A
T R T1 R1
1
1 P11 5 1 P10 5 1 P9 5 1 P8 5 1 P7 5
E-NET BYPASS
2
0
H
Z
R
T
N
B
T R T1 R1 C T R T1 R1 D T R T1 R1 P T R T1 R1
RS485 T R I
IN IN
RTN RTN
P6
D2 D1
TB
3 TB2
SMAS
MLT
25
50 26
1
E/ SGP3 PAIR3
25
50 26
125
50 26
125
50 26
1
LOCCK
O
N
EN
RS485 J34
MGMT
DIS
SW2
A B
P12
+ –
+ –
CLKOUTP CLK TRM P
IN RTN
-48VSEC IN RTN -48VPRI
TOTAL ACCESS 1500 CHASSIS
IN
OUT
SW1
O
N
CLKINS
1
+ – + – + –
CLKOUTS CLKINP
12
1
P14
+ –
CLKOUTP
+ –
+ –
TERMS
CLK
+ –
+ –
IN
OUT
SW3
O
N
TERMP
CLK

61180001L1#S-5D Issue 4, February 2009 9
Figure 8. Daisy-Chained Composite Clock Wiring
J33
T / RP1
25
50 26
1
T1 / R1P2 M / SBPAIR1 PAIR2 PAIR4P4 PGTC
IN
OUT
SW3SW1
O
N
O
N
O
N
TERM
CLK IN
CLK TERM PCLK
1
+ – + – + –
CLK OUT CLKINP AUX3 RMT
A B A B
P18
211
12
1
1
NO COM NC AUX(BANK)AMN(T 1 D )
NO COM NC
AMJ(T1C )
NO COM NC
VMN(T 1 B )
NO COM NC
VMJ(T1A )
A B
AUX2
A B
AUX1 NO COM NC -48
ALM
P13P14
A
T R T1 R1
1
1 P11 5 1 P10 5 1 P9 5 1 P8 5 1 P7 5
E-NET BYPASS
2
0
H
Z
R
T
N
B
T R T1 R1 C T R T1 R1 D T R T1 R1 P T R T1 R1
RS485 T R I
IN IN
RTN RTN
P6
D2 D1
TB
3 TB2
SMAS
MLT
25
50 26
1
E / SGP3 PAIR3
25
50 26
125
50 26
125
50 26
1
LOCCK
O
N
EN
RS485 J34
MGMT
DIS
SW2
A B
P12
+ –
+ –
CLKOUTP CLK TRM P
IN RTN
-48V SEC IN RTN -48V PRI
IN
OUT
SW3
O
N
CLKINS
1
+ – + – + –
CLKOUTS CLKINP
12
1
P14
+ –
CLKOUTP
TERMP
CLK
TOTAL ACCESS 1500 CHASSIS
J33
T / RP1
25
50 26
1
T1 / R1P2 M / SBPAIR1 PAIR2 PAIR4P4 PGTC
IN
OUT
SW3SW1
O
N
O
N
O
N
TERM
CLK IN
CLK TERM PCLK
1
+ – + – + –
CLK OUT CLKINP AUX3 RMT
A B A B
P18
211
12
1
1
NO COM NC AUX(BANK)AMN(T1D )
NO COM NC
AMJ(T 1 C )
NO COM NC
VMN(T 1 B )
NO COM NC
VMJ(T1A )
A B
AUX 2
A B
AUX1 NO COM NC -48
ALM
P13P14
A
T R T1 R1
1
1 P11 5 1 P10 5 1 P9 5 1 P8 5 1 P7 5
E-NET BYPASS
2
0
H
Z
R
T
N
B
T R T1 R1 C T R T1 R1 D T R T1 R1 P T R T1 R1
RS485 T R I
IN IN
RTN RTN
P6
D2 D1
TB
3 TB2
SMAS
MLT
25
50 26
1
E / SGP3 PAIR3
25
50 26
125
50 26
125
50 26
1
LOCCK
O
N
EN
RS485 J34
MGMT
DIS
SW2
A B
P12
+ –
+ –
CLKOUTP CLK TRM P
IN RTN
-48V SEC IN RTN -48V PRI
IN
OUT
SW3
O
N
CLKINS
1
+ – + – + –
CLKOUTS CLKINP
12
1
P14
+ –
CLKOUTP
TERMP
CLK
J33
T / RP1
25
50 26
1
T1 / R1P2 M / SBPAIR1 PAIR2 PAIR4P4 PGTC
IN
OUT
SW3SW1
O
N
O
N
O
N
TERM
CLK IN
CLK TERM PCLK
1
+ – + – + –
CLK OUT CLKINP AUX3 RMT
A B A B
P18
211
12
1
1
NO COM NC AUX(BANK)AMN(T1D )
NO COM NC
AMJ(T 1 C )
NO COM NC
VMN(T 1 B )
NO COM NC
VMJ(T1A )
A B
AUX 2
A B
AUX1 NO COM NC -48
ALM
P13P14
A
T R T1 R1
1
1 P11 5 1 P10 5 1 P9 5 1 P8 5 1 P7 5
E-NET BYPASS
2
0
H
Z
R
T
N
B
T R T1 R1 C T R T1 R1 D T R T1 R1 P T R T1 R1
RS485 T R I
IN IN
RTN RTN
P6
D2 D1
TB
3 TB2
SMAS
MLT
25
50 26
1
E / SGP3 PAIR3
25
50 26
125
50 26
125
50 26
1
LOCCK
O
N
EN
RS485 J34
MGMT
DIS
SW2
A B
P12
+ –
+ –
CLKOUTP CLK TRM P
IN RTN
-48V SEC IN RTN -48V PRI
TOTAL ACCESS 1500 CHASSIS
IN
OUT
SW3
O
N
CLKINS
1
+ – + – + –
CLKOUTS CLKINP
12
1
P14
+ –
CLKOUTP
CO TIMING
+ –
+ –
TERMP
CLK
TOTAL ACCESS 1500 CHASSIS

10 Issue 4, February 2009 61180001L1#S-5D
Connect MLT
Metallic Loop test access is gained by wiring into the
connector P6, on the right side of the backplane.
The following steps are instructions for wiring the Total
Access 1500 for Metallic Loop test access.
1. After you have located the test loops and run them
to the Total Access 1500 shelf, use wire strippers to
strip approximately 1 to 1-1/2 inches from the test
leads.
2. Using the wire-wrap tool, wire wrap the central
office “T” and “R” leads to the Total Access 1500
Rand Tpins, respectively, on terminal P6.
3. Wire wrap the inhibit wire of the cable to the top
pin labeled Ion P6.
4. Wire wrap the drain wire of the cable to the bottom
pin labeled ground on P6.
5. Neatly tie down the test cable pair.
Alarm Connections
Alarming is dependent on how the Total Access 1500
system is configured. When the Total Access 1500 is
deployed in a single or dual T1 feed, the System Control
Unit (SCU) should be provisioned for D4 Conventional
Alarm Relay Mapping.
The alarm outputs will be designated as follows:
• VMJ (Visual Major)
• VMN (Visual Minor)
• AMJ (Audible Major)
• AMN (Audible Minor)
• AUX (Auxiliary)
•PWR
When deployed in a DLC configuration using a quad T1
feed, the SCU can be provisioned for T1 Mapping
which provides the following alarm outputs:
• T1A (A Digroup Major)
• T1B (B Digroup Major)
• T1C (C Digroup Major)
• T1D (D Digroup Major)
• BANK (Bank System Major)
•PWR
In the T1 Mapping mode, the Total Access 1500
separately monitors the performance of each digroup
(A, B, C and D) and the bank. The T1 Mapping mode
assures that an alarm at the digroup level provides
appropriate central office and remote information.
The Total Access 1500 provides standard bank 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:
• Major-Visual Output
• Minor-Visual Output
• Major-Audible Output
• Minor-Audible Output
• AUX Output
The alarming configuration is selected as an LIU option
through the VT100 craft interface.
Connecting Alarm Outputs
Depending on the vendor equipment employed at the
CO, wiring external alarms from the Total Access 1500
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 1500 shelf, see
Figure 9 for location of alarm contacts.
Figure 9. Alarm Contacts
211 1
NO COM NC
AUX (BANK)AMN( T 1 D )
NO COM NC
AMJ(T1C)
NO COM NC
VMN( T1B)
NO COM NC
VMJ( T 1 A )
A B
AUX 2
A B
AUX 1
NO COM NC PWR
COM
P13
Alarm Outputs (P13)
Pin Number Description
1 AUX 1 A
2 AUX 1 B
3 AUX 2 A
4 AUX 2 B
5 VMJ (T1A) NO
6 VMJ (T1A) COM
7 VMJ (T1A) NC
8 VMN (T1B) NO
9 VMN (T1B) COM
10 VMN (T1B) NC
11 AMJ (T1C) NO
12 AMJ (T1C) COM
13 AMJ (T1C) NC
14 AMN (T1D) NO
15 AMN (T1D) COM
16 AMN (T1D) NC
17 AUX (BANK) NO
18 AUX (BANK) COM
19 AUX (BANK) NC
20 PWR COM
21 PWR NO
PWR
NO