Total Access 3000/3010
HTU-C
P/N: 1181107L1
CLEI: T1I3AAEA_ _
*61181107L1-22A*
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
©2007 ADTRAN, Inc.
All Rights Reserved.
Total Access 3000/3010 |
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HTU-C |
61181107L1-22A |
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0710 |
DESCRIPTION
The Total Access 3000/3010 High-bit rate Digital Subscriber Line (HDSL) Transceiver Unit for Central Office (HTU-C, P/N 1181107L1) is used to deploy an HDSL T1 circuit using 4-wire metallic facilities. The HTU-C works with multiple list versions of the HDSL Unit Remote end (HTU-R) and HDSL Range Extenders (HRE).
MENU ITEMS ACCESSIBLE VIA THE SCU
Local or remote craft port access to the Total Access 3000 HTU-C can be provisioned and tested through the System Controller Unit (SCU). When deployed with SCU 1181015L1 or 1181017L1, the HTU-C can be provisioned via the SCU’s faceplate Four Character Display. Refer to the Total Access 3000 System Controller Unit (SCU) Installation and Maintenance Practice (P/N 61181017L1-5) for additional information.
Connect a terminal emulator via the RS-232 (DB-9) connector on the faceplate of the SCU. The terminal must be VT100 or compatible and defaulted to 9600 bps, 8 bit, no parity, 1 stop bit. At the LOGON screen, enter the system User Name and Password. Refer to the appropriate SCU Job Aid for the default PASSWORD. Access the desired HRTU-C by selecting the ACCESS MODULES from the Total Access Menu, and then select the corresponding slot number.
NOTE: When using a PC with terminal software, disable any power saving programs.
BANTAM JACKS
EQ
This jack provides an intrusive test access point to the data stream as follows: ♦ Equipment Jack = To Customer
3.Hold the HTU-C by the front panel while supporting the bottom edge of the module with the ejector latches opened to engage the chassis edges.
4.Align the module edges to fit in the lower and upper guide grooves for the module.
5.Slide the HTU-C into the access module slot. Apply simultaneous thumb pressure at the top and bottom of the module (to the right of the ejector latches) to ensure that the module is firmly seated against the chassis backplane connector. Secure the HTU-C in place by rotating the ejector latch into the locked position.
After installation is complete, the HTU-C performs a series of initialization and self-tests. Once the series of self-tests are completed, the front panel LEDs reflect the true state of the hardware.
FRONT PANEL LEDS
Label |
Status |
Description |
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DSL1/ |
{ |
Off |
No synchronization of HTU-C and HTU-R on either loop |
DSL2 |
z |
Green |
Good signal quality (4 to 9) on Loops 1 and 2 |
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z |
Yellow |
Signal quality marginal (1 to 3) on Loops 1 and 2 |
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z |
Red |
Signal quality poor (0) on Loops 1 and 2 |
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5 |
Flashing |
Error detected at HTU-C or HTU-R. The color of the LED, when |
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flashing, indicates loop signal quality. |
DSX/DS1 |
{ |
Off |
Network-side DSX-1 signal not detected or of a format that does not |
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match provisioning of HDSL circuit |
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z |
Green |
Network-side DSX-1 signal is present and synchronized with the |
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HTU-C’s interface |
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Green Flashing |
Bipolar Violation (BVPV), frame bit error (SF mode), or CRC error |
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(ESF mode) detected at DSX-1 signal |
♦TX: Replaces the data stream being transmitted to the customer (HDSL Loops)
♦RX: Accesses the data stream being received from the customer (HDSL Loops)
♦Equipment jack = To Network
♦TX: Replaces the data being transmitted to the Central Office
♦RX: Access the data being received from the Central Office
When the HTU-C is in MUX mode, the EQ jack can be configured for “To Network” or “To Customer” (default setting) direction via the Test screen. In DSX mode, this option is not available, and the EQ jack configuration will be “Fixed to Customer.”
ALM |
{ |
Off |
No alarm condition detected |
|
z |
Yellow |
Remote alarm condition (HTU-C) detected |
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z |
Red |
Alarm condition detected either locally (HTU-C), or locally and |
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remotely (HTU-C and HTU-R) |
ESF/SF |
{ |
Off |
Unit is receiving Unframed data |
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z |
Green |
Unit is receiving SF data |
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z |
Yellow |
Unit is receiving ESF data |
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B8ZS/AMI |
z |
Green |
Unit is receiving AMI coding |
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z |
Yellow |
Unit is receiving B8ZS coding |
MON |
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LBK |
{ |
Off |
Unit is not in loopback or armed state |
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This jack provides nonintrusive tap to monitor characteristics of the DSX signal as follows: |
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z |
Yellow |
Local (HTU-C) loopback is active to the network |
♦ TX: Monitors signal being transmitted to the customer (HDSL Loops) |
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Yellow Flashing |
Loopback arming sequence has been detected; unit is armed (ready for |
♦ RX: Accesses the data being received from the customer (HDSL Loops) |
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loopback) but not in loopback |
INSTALLATION AND TURN-UP
After unpacking the unit, inspect it for damage. If damage is noted, file a claim with the carrier and then contact ADTRAN. For more information, refer to the warranty.
NOTE: This unit can be provisioned via the RS-232 port or remotely via inband codes.
To avoid confusion with the access module and common module slots, the access module slots start with the fourth slot from the left on the shelf and are numbered “1” through “28” for the Total Access 3000, and “1” through “22” for the Total Access 3010 on the underlying silk-screen. Attempting to install the HTU-C in any other slots other than those listed can damage the module, backplane or both.
To install the HTU-C, perform the following steps:
1.If present, remove the blank panel from the access module slot on the rear of the Total Access 3000/3010 chassis that is intended for the HTU-C.
2.Pull the ejector latch, located on the bottom of the HTU-C front panel, from the closed positions.
HDSL DEPLOYMENT GUIDE
The HDSL system is designed to provide DS1-based service over loops as follows:
♦Cable pairs must be non-loaded
♦No single bridged tap > 2 kft (0.61 meters)
♦Impulse noises < 50 dB as measured using a 50 kB filter
♦Wideband noise < 31 dBrn as measured using a 50 kB filter
♦Pulse attenuation (LOSS on HDSL current system status screen) < 30 dB
♦Total bridged tap < 2.5 kft (0.76 meters)
♦196 kHz insertion loss < 35 dB
♦Maximum loop resistance is 800 ohms
OPTION SETTINGS
The table on the following page lists options that are available when configuring the HTU-C. However, some options are pre-set and dependent upon the System Controller Unit (SCU) being used. Refer the appropriate SCU Installation and Maintenance Practice when setting options.
For more information, refer to the Installation and Maintenance Practice (P/N 61181107L1-5) available online at www.adtran.com.