ADTRAN Network Card Quad T1 IMA User Manual

1
3
4
2
T1/  
E1  
®
Total Access 1248 Quad T1 IMA  
48-Port DSLAM with Modem  
Installation and Maintenance Practice  
Document Number: 61179641AL1-5C  
CLEI Number: VAMDA00A_ _  
September 2007  
 
Revision History  
Revision  
Date  
Description  
A
B
C
October 2004  
Initial release  
November 2005 Update to new format. Software version B02.  
September  
2007  
This is the third release of this document. This version updates the  
software to version B03.06.01  
Conventions  
The following typographical conventions are used in this document:  
This font indicates a cross-reference link.  
This font indicates screen menus, fields, and parameters.  
THIS FONT indicates keyboard keys (ENTER, ESC, ALT). Keys that are to be pressed simultaneously  
are shown with a plus sign (ALT+X indicates that the ALT key and X key should be pressed at the  
same time).  
This font indicates references to other documentation and is also used for emphasis.  
Thisfontindicates on-screen messages and prompts.  
Thisfontindicates text to be typed exactly as shown.  
This font indicates silkscreen labels or other system label items.  
This font is used for strong emphasis.  
NOTE  
Notes inform the user of additional, but essential, information or  
features.  
CAUTION  
Cautions inform the user of potential damage, malfunction, or dis-  
ruption to equipment, software, or environment.  
WARNING  
Warnings inform the user of potential bodily pain, injury, or death.  
61179641AL1-5C  
iii  
 
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Training  
ADTRAN offers training courses on our products. These courses include overviews on product  
features and functions while covering applications of ADTRAN product lines. ADTRAN  
provides a variety of training options, including customized training and courses taught at our  
facilities or at customer sites.  
For inquiries concerning training, contact ADTRAN:  
Training Phone:  
Training Fax:  
800-615-1176, ext. 6996  
256-963-6217  
Training Email:  
iv  
61179641AL1-5C  
 
Contents  
61179641AL1-5C  
v
 
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
vi  
61179641AL1-5C  
 
Contents  
61179641AL1-5C  
vii  
 
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
viii  
61179641AL1-5C  
 
Figures  
Figures  
61179641AL1-5C  
ix  
 
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
x
61179641AL1-5C  
 
Figures  
Figure 5-99. Profile Settings for: Custom Name Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-145  
61179641AL1-5C  
xi  
 
Tables  
Tables  
61179641AL1-5C  
xiii  
 
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
xiv  
61179641AL1-5C  
 
Tables  
61179641AL1-5C  
xv  
 
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
This page is intentionally blank.  
xvi  
61179641AL1-5C  
 
Section 1  
Introduction  
GENERAL  
The Total Access 1248 (see Figure 1-1) is a Digital Subscriber Line Access Multiplexer  
(DSLAM) system that is used to further extend Asymmetrical Digital Subscriber Line (ADSL)  
services in the network.  
1
3
2
T
4
1
/
E
1
FAN MODULE  
1179675L1  
1179641AL1  
A
B
ALARM  
CRAFT  
T1/E1 1-4  
-48V RET -48V RET  
PWR  
ALM  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .....,5.0A  
ETHERNET  
TOP:POTS  
BOTTOM: ADSL+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSL+POTS  
PORTS 25-48  
T1/E1  
Figure 1-1. Total Access 1248  
61179641AL1-5C  
1-1  
 
       
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
DESCRIPTION  
The Total Access 1248 is a mini-DSLAM that accepts up to four T1 network feeds assigned to  
a single IMA group. Inverse Multiplexing over ATM (IMA) is a technology used to bond multiple  
(DS1) links into a single data pipe.  
The Total Access 1248 provides ADSL2+ service for up to 48 subscribers per unit. Plain Old  
Telephone Service (POTS) is brought in from an on-board splitter and is placed on the same  
pair as the ADSL2+ signal. Since ADSL2+ and POTS are transported on the same twisted pair,  
the subscriber must use a low-pass filter on the line before attempting to use analog services.  
The lines are configured for service with flow-through provisioning using a network configu-  
ration application such as Telcordia’s Network Configuration (NCON). Permanent Virtual  
Circuits (PVCs) in the ATM network to the subscriber’s chosen Internet Service Provider (ISP)  
allow the subscriber access to the internet.  
The Total Access 1248 contains a V.90 internal modem for remote access.  
The Total Access 1248 is rack-mountable and measures 1.75 inches (1U) high, 17.25 inches  
wide, and 11.125 inches deep (measurements do not include the mounting brackets). The  
device may be powered using one or two –48 VDC sources, one for a non-redundant power  
configuration, two for a redundant power configuration.  
For detailed specification information on the Total Access 1248 system, refer to “Section 7,  
Features  
The Total Access 1248 system incorporates the following features:  
• Front panel indication of network, customer, and power/self-test status  
• 48 ports of ADSL2+ plus POTS  
• Redundant power inputs  
• POTS service is not power dependent  
• Removable front-accessible fan module (P/N 1179675L1)  
• Supports IMA for up to four T1/E1 IMA links  
• ADSL options provisionable to accommodate both short and long haul T1s  
• Provisioning and alarm monitoring via TL1, SNMP, local craft interface, and inband  
management channel  
• IMA group support (one group)  
• Operates over an extended temperature range of –40°C to +70°C  
• Interoperable with any ATM T1 IMA device built to current IMA specifications, which  
includes the Total Access 3000 IMA Aggregation System  
• Compliant with GR-63-CORE/GR-1089-CORE (NEBS), and Listed to the applicable UL  
Safety Standard(s)  
• Integrated V.90 modem  
• Expansion capabilities for a total of three Total Access 1248 chassis to a Host unit  
• In-band management of the expansion chassis  
1-2  
61179641AL1-5C  
 
   
Description  
Front Panel LEDs  
Figure 1-2 shows the location of the Total Access 1248 front panel LEDs. Upon initial  
powering, the Total Access 1248 system performs a power up self-test. Once the power up  
self-test is complete, the status LEDs reflect the condition of the hardware.  
FAN MODULE  
1179675L1  
1179641AL1  
A
B
ALARM  
CRAFT  
T1/E1 1-4  
-48V RET -48V RET  
PWR  
ALM  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .....,5.0A  
ETHERNET  
TOP:POTS  
BOTTOM: ADSL+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSL+POTS  
PORTS 25-48  
T1/E1  
Power and Alarm  
T1/E1  
Expansion  
Ethernet  
Figure 1-2. Total Access 1248 Front Panel LEDs  
See Table 1-1 for a listing of LEDs and their status.  
Table 1-1. Front Panel LEDs  
Label  
PWR  
Status  
Description  
Green  
Yellow  
Red  
Total Access 1248 is In Service  
Total Access 1248 is Out of Service-Maintenance  
Total Access 1248 Failed self-test  
Off  
No power present on Total Access 1248  
ALM  
Yellow  
Red  
Off  
Total Access 1248 is reporting a Minor alarm  
Total Access 1248 is reporting a Major alarm  
No alarms reported on Total Access 1248  
T1/E1 1–4  
Green  
All good  
4 Green Flashing  
Yellow  
T1/E1 OK, no IMA Sync  
Signal present OOF  
T1/E1 is in loopback  
No signal  
4 Yellow Flashing  
Red  
Off  
Facility unassigned  
ETHERNET  
Green  
Ethernet signal present  
Ethernet with traffic  
No signal  
4 Green Flashing  
Yellow  
EXPANSION OUT  
Green  
Connected to a downstream box  
Connected with traffic  
No signal  
4 Green Flashing  
Yellow  
61179641AL1-5C  
1-3  
 
     
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Compliance  
CAUTION  
C A U T I O N !  
SUBJECT TO ELECTROSTATIC DAMAGE  
OR DECREASE IN RELIABILITY.  
HANDLING PRECAUTIONS REQUIRED.  
Electrostatic Discharge (ESD) can damage electronic modules.  
When 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.  
The Total Access 1248 is NRTL listed to the applicable UL standards. The Total Access 1248  
meets or exceeds all the applicable requirements of NEBS, Telcordia GR-63-CORE, and  
GR-1089-CORE.  
The Total Access 1248 is intended for deployment in Central Office type facilities, EEEs,  
EECs, and locations where the NEC applies. Install the Total Access 1248 in a restricted  
access location. Table 1-2 shows the compliance codes for the Total Access 1248.  
Table 1-2. Compliance Codes  
Configuration Codes  
Power Code (PC)  
Input  
Output  
F
X
A
C
X
Telecommunication Code (TC)  
Installation Code (IC)  
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.  
1-4  
61179641AL1-5C  
 
   
Description  
CAUTION  
Per GR-1089-CORE the Total Access 1248 is designed and  
intended for installation as part of a Common Bonding Network  
(CBN). The Total Access 1248 is not designed nor intended for  
installation as part of an Isolated Bonding Network (IBN).  
CAUTION  
Per GR-1089-CORE Section 9, the Total Access 1248 is intended to  
be deployed in either a DC-C (common) or DC-I (isolated) installa-  
tion of the Total Access 1248.  
CAUTION  
The Total Access 1248 Chassis frame ground terminal must be  
connected to a reliable earth ground.  
CAUTION  
Connect to a reliably grounded –48 VDC source which is electri-  
cally isolated from the AC source. The branch circuit overcurrent  
protection shall be a fuse or circuit breaker rated minimum  
48 VDC, maximum 3 A.  
NOTE  
The POTS and ADSL+POTS ports are classified as Type 1, 3, and 5  
as defined in Appendix B of GR-1089-CORE, Issue 4 and meets the  
lightning and power fault criteria with any primary protector that  
meets any of the voltage limits of GR-974-CORE or GR-1361-CORE  
(i.e., carbon blocks, gas tubes, solid states, etc.). Solid-state  
primary protectors are not recommended as they could affect the  
signal integrity of the ADSL.  
NOTE  
Current limiting protectors are not required.  
61179641AL1-5C  
1-5  
 
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
This page is intentionally blank.  
1-6  
61179641AL1-5C  
 
Section 2  
Application Guidelines  
INTRODUCTION  
The Total Access 1248 provides 48 ADSL2+ plus POTS ports downstream to the subscriber,  
one to four T1 IMA ports upstream to the network, local and remote management capabilities,  
and front panel LEDs that indicate status. Figure 2-1 illustrates an operational scenario for  
the Total Access 1248.  
Voice Switch or DLC Providing 1-48 POTS  
POTS Ports 1-24 POTS Ports 25-48  
Central Office or Remote Terminal  
Quad IMA Providing 1-4 DS1s  
FAN MODULE  
1179675L1  
1179641AL1  
A
B
ALARM  
CRAFT  
T1/E1 1-4  
-48V RET -48V RET  
PWR  
ALM  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .....,5.0A  
ETHERNET  
TOP:POTS  
BOTTOM: AD+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSLOTS  
PORTS 25-48  
T1/E1  
Power  
To Ground  
24 Ports  
24 Ports  
Subscriber  
Subscriber  
Subscriber  
Subscriber  
Figure 2-1. Total Access 1248 Operational Scenario  
61179641AL1-5C  
2-1  
 
       
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
EXPANSION  
Up to four Total Access 1248 systems can be connected together (see Figure 2-2). One of the  
units must be a Total Access 1248 Host unit (e.g., P/N 1179641AL1) and the others are Total  
Access 1248 Client units (P/N 1179641L5).  
The client units (also referred to as Expansion units) have RJ-45 jacks, labeled EXPANSION IN  
and OUT, for the purpose of expanding one to another.  
The Total Access 1248 provides the network connection for all of the client units. All provi-  
sioning for the clients is completed through the Host unit.  
Beginning with the host, a Category 5e, non-crossover cable is connected from the EXPANSION  
OUT jack of the host to the EXPANSION IN jack of the first client unit. Further connections  
between client unit EXPANSION OUT jacks to EXPANSION IN jacks continue until a total of up to  
three client units have been connected with the third client unit having only a connection to  
the EXPANSION IN jack.  
Host  
FAN MODULE  
1179675L1  
1179641AL1  
A
B
ALARM  
CRAFT  
T1/E1 1-4  
-48V RET -48V RET  
PWR  
ALM  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .....,5.0A  
ETHERNET  
TOP:POTS  
BOTTOM: ADSL+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSL+POTS  
PORTS 25-48  
T1/E1  
Client 1  
FAN MODULE  
1179675L1  
1179641L5  
A
B
-48V RET -48V RET  
PWR  
ALM  
EXPANSION EXPANSION  
IN  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .....,5.0A  
CRAFT  
TOP:POTS  
BOTTOM: ADSL+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSL+POTS  
PORTS 25-48  
Client 2  
FAN MODULE  
1179675L1  
1179641L5  
A
B
-48V RET -48V RET  
PWR  
ALM  
EXPANSION EXPANSION  
IN  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .....,5.0A  
CRAFT  
TOP:POTS  
BOTTOM: ADSL+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSL+POTS  
PORTS 25-48  
Client 3  
FAN MODULE  
1179675L1  
1179641L5  
A
B
-48V RET -48V RET  
PWR  
ALM  
EXPANSION EXPANSION  
IN  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .....,5.0A  
CRAFT  
TOP:POTS  
BOTTOM: ADSL+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSL+POTS  
PORTS 25-48  
Figure 2-2. Expansion Cabling  
2-2  
61179641AL1-5C  
 
   
Section 3  
Installation  
INTRODUCTION  
C A U T I O N !  
SUBJECT TO ELECTROSTATIC DAMAGE  
OR DECREASE IN RELIABILITY.  
HANDLING PRECAUTIONS REQUIRED.  
CAUTION  
Electrostatic Discharge (ESD) can damage electronic units. When  
handling units, wear an antistatic discharge wrist strap to prevent  
damage to electronic components. Place units in antistatic packing  
material when transporting or storing. When working on units,  
always place them on an approved antistatic mat that is electrically  
grounded.  
After unpacking the Total Access 1248, inspect it for damage. If damage has occurred, file a  
claim with the carrier and then contact ADTRAN Customer Service. Refer to “Appendix A,  
Warranty” for further information. If possible, keep the original shipping container to return  
the Total Access 1248 for repair or for verification of shipping damage.  
61179641AL1-5C  
3-1  
 
     
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Shipping Contents  
The shipping container for the Total Access 1248 includes the contents shown in Table 3-1.  
Table 3-1. Total Access 1248 Shipping Contents  
Description  
Part Number  
Quantity  
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem  
1179641AL1  
1
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem  
Installation and Maintenance Practice  
61179641AL1-5  
1
Cable Assembly, Ground Wire  
Terminal Block  
3125P037@  
32024CON10  
3265540  
1
1
2
2
4
4
5
Mounting Bracket, 19-inch  
Mounting Bracket, 23-inch  
Screw, 8-32 × 1/4  
3265541  
3276003007  
327611034  
3292032  
Screw, 8-32 × 3/16  
Cable Tie  
Required Tools  
The following tools and materials are required to install the Total Access 1248:  
• Wire-wrap tool  
• #2 phillips-head screwdriver  
• #1 phillips-head screwdriver  
• Straight-slot screwdriver  
• Multimeter (ohmmeter and voltmeter)  
• Crimping tool for power lugs  
• Wire strippers  
• Side cutters  
3-2  
61179641AL1-5C  
 
     
Installation Prerequisites  
INSTALLATION PREREQUISITES  
The following items should be completed prior to installing the Total Access 1248:  
1. Make sure that the network feed is in place.  
2. Make sure that local power is available and that the required fuses are installed.  
CAUTION  
The maximum power draw for the Total Access 1248 system is 75  
watts.  
ADTRAN recommends an external fuse rated at 3.0 amps.  
3. Complete Table 3-2 with the information that is needed to turn-up and provision the Total  
Access 1248.  
Table 3-2. Turn-up and Provisioning Prerequisite information  
Item Description  
Value  
Network Feed/Aggregation System IP Address  
Network Feed/Aggregation System Port  
Total Access 1248 IP Address  
Total Access 1248 Default Gateway  
Total Access 1248 Subnet Mask  
Total Access 1248 VPI/VCI  
Number of Network Facilities Feeding the Total Access 1248  
CLEI Code/System Name  
61179641AL1-5C  
3-3  
 
   
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
INSTALLATION STEPS  
The following steps are required to install the Total Access 1248. Each step has an associated  
procedure which is referenced below the step. Each procedure provides detailed information  
for completing the step.  
1. Mount the Total Access 1248 system with the appropriate hardware.  
For detailed information, refer to “Mounting the Total Access 1248” on page 3-5.  
2. Ground the Total Access 1248.  
For detailed information, refer to “Ground Connection” on page 3-8.  
3. Make the power connections to the Total Access 1248.  
For detailed information, refer to “Power Connection” on page 3-9.  
4. Connect the Ethernet cable to the Total Access 1248.  
For detailed information, refer to “Ethernet Connection” on page 3-11.  
5. Connect the DB-15 male alarm cable connector to the Total Access 1248 and wire-wrap  
the connections to an alarm panel.  
For detailed information, refer to “Alarm Connections” on page 3-12.  
6. Connect the network cable.  
For detailed information, refer to “Network Connections” on page 3-13.  
7. Connect the ADSL2+ plus POTS and POTS cables.  
For detailed information, refer to “ADSL2+ Plus POTS Connections” on page 3-14.  
8. Turn-up the Total Access 1248.  
For detailed information, refer to “Quick Turn-up Steps” on page 3-19.  
3-4  
61179641AL1-5C  
 
 
Installation Steps  
Mounting the Total Access 1248  
The Total Access 1248 is shipped with two sets of mounting brackets that accommodate either  
a 19-inch or 23-inch rack.  
• The mounting brackets used for a 19-inch rack are part number 3265540.  
• The mounting brackets used for a 23-inch rack are part number 3265541.  
The mounting brackets provide for flush or mid-mounting configurations. Figure 3-1 shows  
the Total Access 1248 mounting bracket installation options. Four screws (supplied with the  
unit) are required for mounting the brackets to the system.  
19-inch Mounting Brackets  
BACK  
1
3
2
T1/  
4
E1  
FRONT  
P/N 3265540  
23-inch Mounting Brackets  
BACK  
1
3
2
T
4
1
/
E
1
FRONT  
P/N 3265541  
Figure 3-1. Mounting Brackets  
61179641AL1-5C  
3-5  
 
   
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Flush-mount  
For flush-mount systems, the Total Access 1248 must be mounted from the front of the rack,  
with mounting brackets in the flush-mounting orientation (see Figure 3-2). When flush-  
mounting a Total Access 1248 in the rack, use a #2 phillips-head screwdriver and attach the  
mounting brackets to the front screw holes with the flanges containing the slotted rack-  
mounting holes facing the front of the Total Access 1248.  
Using four screws appropriate for the mounting rack and the appropriate screwdriver, secure  
the Total Access 1248 in place on the rack.  
BACK  
1
3
2
T
4
1/  
E1  
FRONT  
Flush-mount Orientation  
19-inch Mounting Brackets  
23-inch Mounting Brackets  
Figure 3-2. Flush-mount Orientation  
3-6  
61179641AL1-5C  
 
   
Installation Steps  
Mid-mount  
For mid-mount systems, the Total Access 1248 must be mounted from the front of the rack,  
with mounting brackets in the mid-mounting orientation (see Figure 3-3). For mid-mounting a  
Total Access 1248 in the rack, use a #2 phillips-head screwdriver and attach the mounting  
brackets to the rear screw holes with the flanges containing the slotted rack-mounting holes  
facing the front of the Total Access 1248.  
Using four screws appropriate for the mounting rack and the appropriate screwdriver, secure  
the Total Access 1248 in place on the rack.  
BACK  
1
3
2
T
4
1
/
E
1
FRONT  
Mid-mount Orientation  
19-inch Mounting Brackets  
23-inch Mounting Brackets  
Figure 3-3. Mid-mount Orientation  
61179641AL1-5C  
3-7  
 
   
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Ground Connection  
The ground wire must be 12 to 18 AWG, however, it must be as large or larger than the wire  
used for power. The Total Access 1248 must be grounded to a reliable grounding source.  
To connect the ground wire, perform the following steps:  
1. Connect the ground wire (fitted with a loop terminal end) to the ground lug on the front of  
the Total Access 1248 (see Figure 3-4).  
2. Clean the surface of the frame ground source and apply an appropriate antioxidant.  
3. Connect the other end of the ground wire to the grounded frame.  
4. Using an ohmmeter, verify continuity between the ground lug and a known good frame  
ground. The reading should be less than 1 ohm.  
1
3
2
T1/  
4
E1  
Figure 3-4. Total Access 1248 Ground Connection  
3-8  
61179641AL1-5C  
 
   
Installation Steps  
Power Connection  
The Total Access 1248 provides redundant power inputs. Two sources of 48 VDC must be  
provided to use the redundant power feature. The power wires must be 12 to 18 AWG  
stranded copper. The Total Access 1248 uses a four-point terminal block (see Figure 3-5) to  
accept the –48 VDC and –48 VDC RET leads.  
Figure 3-5. Four-point Terminal Block  
NOTE  
If a non-redundant power configuration is to be implemented, use  
the connections marked –48 VDC A and –48 VDC A RET.  
To connect the power source, perform the following steps:  
1. With the power disconnected at the source, remove approximately 1/4-inch of insulation  
from the ends of both power wires.  
NOTE  
ADTRAN recommends an external fuse rated at 3 amps.  
2. Using a small flat-head screwdriver, loosen the setscrews on the top of the terminal block.  
3. Insert the bare wire into the opening on the front of the terminal block, making sure that  
the wire is inserted correctly according to the labeling on the unit above the terminal  
block.  
4. While holding the wire in place, tighten the setscrew until the wire is secure.  
5. Repeat steps 1 to 4 until all power leads are connected.  
6. Apply power to the Total Access 1248 and test the voltage and polarity on the terminal  
block using the tops of the setscrews as test points.  
61179641AL1-5C  
3-9  
 
       
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Fans/Fan Filter  
The Total Access 1248 is shipped with a pre-installed fan module (P/N 1179675L1). The fan  
module is located on the right side of the unit, and contains four fans (see Figure 3-6). The  
fans move filtered air (if the filter is installed) into the Total Access 1248 chassis and out  
through the exhaust slots on the left side.  
The fans are monitored by the system and are tested during power-up or when a fan module is  
installed. The fans can also be manually tested from the Self-test Menu. If any fan fails, the  
PWR LED lights red indicating a self-test failure. At the same time, a minor alarm is generated  
indicating the problem. This also occurs if the fan(s) fail during use. If the fan module is  
removed from the shelf for replacement and/or maintenance, the alarm can be suppressed  
depending on the fan alarm delay.  
The fans are thermostatically controlled and are only powered on when necessary. Initially,  
only one fan is activated. The fans are alternated to maintain the specified temperature level.  
If the temperature continues to rise, all fans are used at the same time. In the event the  
temperature still remains too high, the ADSL circuits are shut down until a safe operating  
temperature is reached.  
The fan module and fan filter are field-replaceable.  
FAN MODULE  
1179675L1  
L1  
MODULE  
1179675  
FAN  
Figure 3-6. Total Access 1248 Fan Module  
3-10  
61179641AL1-5C  
 
   
Installation Steps  
Ethernet Connection  
The Total Access 1248 interfaces with networks for management through an Ethernet port  
(see Figure 3-7).  
FAN MODULE  
1179675L1  
1/E1  
PWR  
ALM  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V .... ,5.0A  
PORTS 1-24  
T1/E1  
ETHERNET  
Figure 3-7. Total Access 1248 Ethernet Port  
The following Ethernet protocols are supported:  
• IEEE 802.3, 10/100Base-T  
• DHCP Client Mode for Management  
• SNMP  
61179641AL1-5C  
3-11  
 
   
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Alarm Connections  
The Total Access 1248 provides an alarm port (see Figure 3-8) with three auxiliary alarm  
inputs and three alarm outputs (Major, Minor, and Critical). If load shedding is active then the  
Critical alarm output will be active. Alarm inputs are activated by shorting A and B contacts  
(closing an externally connected relay). The outputs provide both normally open and normally  
closed pins (through internal relay contacts) for proper operation with a variety of alarm  
panels. Each alarm event generates an autonomous TL1 message that is transmitted via the  
in-band management channel to a monitoring device.  
A cable with a high density DB-15 male connector on one end and a stub at the other end is  
available (P/N 1196DB901L1) for wire-wrap connections to an alarm panel.  
AN MODULE  
1179675L1  
1179641AL1  
A
ALARM  
-48V RET  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V ,5.0A  
PORTS 1-24  
Figure 3-8. Total Access 1248 Alarm Connection  
The alarm pinouts are shown in Table 3-3.  
Table 3-3. Alarm Pinouts  
Pin  
1
Color  
Contact Description  
Alarm 3 Input - A  
Alarm 1 Input - B  
Critical Alarm COM  
Minor Alarm COM  
Major Alarm COM  
Alarm 3 Input - B  
Alarm 2 Input - A  
Critical Alarm NC  
Minor Alarm NC  
Major Alarm NC  
Alarm 2 Input - B  
Alarm 1 Input - A  
Critical Alarm NO  
Minor Alarm NO  
Major Alarm NO  
Red  
2
Red/Black  
Red/White  
Orange  
3
4
5
Orange/Black  
White  
6
7
White/Black  
Black  
8
9
Black/White  
Blue/Black  
Blue/White  
Blue  
10  
11  
12  
13  
14  
15  
Green/Black  
Green/White  
Green  
3-12  
61179641AL1-5C  
 
     
Installation Steps  
Network Connections  
Network connections are accomplished via the 50-pin amphenol connector labeled T1/E1 1-4  
(see Figure 3-9). See Table 3-4 for the pinout of the T1/E1 interface and the analog modem.  
FAN MODULE  
1179675L1  
1179641AL1  
A
T1/E1 1-4  
-48V RET -48V RET  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V ,5.0A  
PORTS 1-24  
Figure 3-9. Total Access 1248 Network Connection  
Table 3-4. T1/E1/Modem Interface Pinout  
Pin Numbers  
1, 26  
Description  
RX Tip/Ring 1  
TX Tip/Ring 1  
RX Tip/Ring 2  
TX Tip/Ring 2  
RX Tip/Ring 3  
TX Tip/Ring 3  
RX Tip/Ring 4  
TX Tip/Ring 4  
Unused  
2, 27  
3, 28  
4, 29  
5, 30  
6, 31  
7, 32  
8, 33  
9, 34  
10, 35  
11, 36  
12, 37  
13, 38  
14, 39  
15, 40  
16, 41  
17–24  
42–49  
25, 50  
Unused  
Unused  
Unused  
Unused  
Unused  
Unused  
Unused  
Unused  
Unused  
Modem Tip/Ring  
61179641AL1-5C  
3-13  
 
     
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
ADSL2+ Plus POTS Connections  
The Total Access 1248 utilizes four 25-pair amphenol connectors (see Figure 3-10), which are  
used as follows:  
• Two amphenols for connection to the POTS pairs  
• Two amphenols for connection to the ADSL2+ plus POTS pairs  
FAN MODULE  
1179675L1  
1179641AL1  
-48V RET -48V RET  
EXPANSION  
OUT  
USE COPPER CONDUCTORS ONLY!  
-48V ... ,5.0A  
ETHERNET  
T1/E1  
TOP:POTS  
BOTTOM: ADSL+POTS  
PORTS 1-24  
TOP:POTS BOTTOM: ADSL+POTS  
PORTS 25-48  
Figure 3-10. Total Access 1248 POTS and ADSL+POTS Connections  
POTS Interface  
Each POTS interface on the Total Access 1248 accepts a POTS signal from the CO and passes  
it through to the ADSL2+ plus POTS interface for delivery to the subscriber. POTS service is  
not affected by loss of power to the unit.  
ADSL2+ Plus POTS Interface  
Each ADSL2+ plus POTS interface provides transport for standard POTS from the Central  
Office (CO) to the customer. The frequency ranges for Total Access 1248 deployment are as  
follows:  
• POTS accommodates frequency ranges up to 4 kHz  
• ADSL and ADSL2 accommodates frequency ranges up to 1.1 MHz  
• ADSL2+ accommodates frequency ranges up to 2.2 MHz  
Any analog devices connected to this interface must use a low-pass filter to prevent high  
frequencies from interfering with the device.  
3-14  
61179641AL1-5C  
 
       
Installation Steps  
POTS Connection  
The Total Access 1248 must be connected to a POTS source to provide POTS to the  
subscribers. In a standard configuration, the POTS will be brought in from a nearby cross-  
connect. The Total Access 1248 accepts the POTS signal on the top two amphenol connectors  
labeled POTS. There is a one-to-one correlation between the pins on the POTS amphenol  
connectors and the pins on the ADSL plus POTS (ADSL+POTS) amphenol connectors. Refer to  
the “Customer Connections (ADSL+POTS)” section below for more information.  
To establish a POTS connection, perform the following steps:  
1. Connect the cables with the 25-pair female amphenol connectors to the male amphenol  
connectors provided, labeled POTS.  
2. Tighten the screws (normally provided with each amphenol connector attached to the  
cable) on the right side of each amphenol connector, and use the cable ties (provided)  
through the tie brackets (provided) to secure the left side of the amphenol connectors.  
NOTE  
This wire tie may be used to assist in routing the power cables and  
the ADSL+POTS cables that originate from the right most amphe-  
nol connector.  
NOTE  
The POTS interface may be connected to the outside plant.  
Customer Connections (ADSL+POTS)  
The Total Access 1248 provides 48 ADSL+POTS ports on two 50-pin male amphenol  
connectors. POTS is brought in from the Central Office (CO) on the POTS amphenol  
connectors as described in the preceding section. The ADSL is generated locally and placed on  
the same pair as the corresponding POTS signal for delivery to the subscriber.  
There is a one-to-one correlation between the pins on the ADSL+POTS amphenol connectors  
and the pins on the POTS amphenol connectors. Refer to the “POTS Connection” section above  
for more information. The 25th pair is not used. To establish the ADSL+POTS connection,  
perform the following steps:  
1. Connect the 25-pair female amphenol connectors to the male amphenol connectors pro-  
vided, labeled ADSL+POTS.  
2. Tighten the screws (normally provided with each amphenol connector attached to the  
cable) on the right side of each amphenol connector, and use the cable ties (provided)  
placed through the tie brackets (provided) to secure the left side of the amphenol  
connectors.  
The pin assignments for the left and right POTS and ADSL+POTS cables are shown in  
61179641AL1-5C  
3-15  
 
   
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
Table 3-5. POTS and ADSL+POTS Cable Pin Assignments for Left-most Connectors  
Pair #  
1
Pins R.T.  
1, 26  
Pair #  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
Pins R.T.  
13, 38  
2
2, 27  
14, 39  
3
3, 28  
15, 40  
4
4, 29  
16, 41  
5
5, 30  
17, 42  
6
6, 31  
18, 43  
7
7, 32  
19, 44  
8
8, 33  
20, 45  
9
9, 34  
21, 46  
10  
11  
12  
10, 35  
11, 36  
12, 37  
22, 47  
23, 48  
24, 49  
25, 50 Not used  
Table 3-6. POTS and ADSL+POTS Cable Pin Assignments for Right-most Connectors  
Pair #  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
Pins R.T.  
1, 26  
Pair #  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
Pins R.T.  
13, 38  
2, 27  
14, 39  
3, 28  
15, 40  
4, 29  
16, 41  
5, 30  
17, 42  
6, 31  
18, 43  
7, 32  
19, 44  
8, 33  
20, 45  
9, 34  
21, 46  
10, 35  
11, 36  
12, 37  
22, 47  
23, 48  
24, 49  
25, 50 Not used  
3-16  
61179641AL1-5C  
 
   
Total Access 1200F Conversion  
TOTAL ACCESS 1200F CONVERSION  
CAUTION  
The order of subtended Total Access 1200 Series DSLAMS must be  
preserved when connecting to the Total Access 1200F for transla-  
tion to the legacy ATM mode PVCs. See Table 3-7.  
Table 3-7. Order of Subtended Clients  
Total Access 1200 Series Client  
Total Access 1200F Expansion Port  
1
Total Access 1100 Series Host  
(Client 1)  
2
3
4
Client 2  
Client 3  
Client 4  
Existing Total Access 1200 Series DSLAM installations require a software upgrade to convert  
the Total Access 1200 Series DSLAMs to function with a Total Access 1200F.  
To upgrade each Total Access 1200 Series DSLAM, perform the following steps:  
CAUTION  
Upgrading the firmware disrupts DSL service to the customer.  
1. Connect a VT100-capable laptop/terminal to the CRAFT port of a Total Access 1200 Series  
DSLAM (see Figure 3-11 for the location of the CRAFT port).  
ALARM  
PORTS 1-24  
CRAFT  
Figure 3-11. Total Access 1100 Series DSLAM Craft Port  
2. Set the terminal baud rate to 9600 baud, 8 data bits, no parity, 1 stop bit, and no flow  
control.  
NOTE  
The 4-MB Flash Upgrade must be made at 9600 baud.  
61179641AL1-5C  
3-17  
 
       
Total Access 1248 Quad T1 IMA 48-Port DSLAM with Modem Installation and Maintenance Practice  
3. Press and hold the Y key on the terminal keyboard and apply power to the Total Access  
1200 Series DSLAM.  
4. When prompted, select 38400 for a faster transfer rate (20 minutes at 38400 compared to  
60 minutes at 9600).  
If using HyperTerminal, go off-line, select properties, change the baud rate, then go back  
online. VT100 settings should be set as follows:  
• Baud Rate: 38400  
• Data Bits: 8  
• Parity: None  
• Stop Bits: 1  
• Flow Control: None  
If properly connected, a row of CCCCs should begin to display on the screen.  
5. Download the current file identified by network administration using the Y-Modem  
protocol.  
If using HyperTerminal, use the Transfer > Send File... Browse... dialogue and identify the  
file by name and location. Select YModem, then click Send.  
6. Several messages are displayed that report system progress for the upgrade procedure,  
including the following:  
• Erasing Flash  
• Erase Complete  
• Programming Flash  
• Programming Complete  
• Comparing Flash to SDRAM  
• Verify Done  
• Please set Baud Rate to 9600 and Reboot Unit Now  
7. Reboot the Total Access 1200 Series DSLAM when the download is completed.  
8. Repeat steps 1 through 7 for each Total Access 1200 Series DSLAM.  
9. Connect the Total Access 1200F expansion cables at the DSLAM end.  
10. Provision, test, and turn up the equipment. Refer to “Section 4, Provisioning Defaults”  
and “Section 5, User Interface” of the Total Access 1200F Installation and Maintenance  
Practice (P/N 61179660L1-5) for detailed instructions on provisioning the equipment.  
NOTE  
Access to the Total Access 1200 Series units is now available  
through the Total Access 1200F craft access of Inband  
Management access ports.  
3-18  
61179641AL1-5C