T1 ESF CSU
Reference Manual
May 2002
34-00309.B
Copyright Notice
Copyright © 2002 Verilink Corporation. All rights reserved. No part of this
publication may be reprodu ce d, tra nsm itte d, transcribed, stored in a
retrieval system, or translated into any lan gua ge in any form by any means
without the written permission of Verilink.
Manual Reorder # 34-00309.B
May 2002
Verilink
®
is a registered trademark of the Verilink Corporation.
All other brand and product names used herein are trademarks or registered
trademarks of th eir respective manu facturers.
This document does not cre at e an y express or implied warranty about
Verilink or about its products or services. Verilink’s sole warranty is
contained in its product warranty. The end-user documentation is shipped
with Verilink’s products and constitutes the sole specifications referred to in
the product warranty. Verilink has made reasonable efforts to verify tha t th e
information contain ed herein is accurate, but Verilink assu mes no
responsibility for its use or for any infringement of patents or other rights of
third parties that may result. The customer is solely responsible for
verifying the suitability of Verilink’s products for its use. Specifications are
subject to change without notice.
This equipment has been tested a nd found to comply with the limits for a
Class A digital device, pursuant t o Part 15 of FCC Rules. These limits are
designed to provide reasona bl e protection against harmfu l inte rference
when the equipment is operated in a commercial environment. This
equipment generates, use s , and can radiate radio frequenc y energy and if
not installed and used in accordance with the instructio n manual, may caus e
harmful interference to radio communications. Operation of this equipment
in a residential ar ea is likely to cause h ar mf u l interference in which c ase the
user is required to correct the interference at his own expense. This devi ce
must also accept any interference received, including interference that may
cause undesired operat ion.
This device complies with Part 15 of the F CC rules. Operation is subje ct to
the following two condi tions:
1
This device may not cause harmful interference.
2
This device must accept an y in terference r eceived, including interference
that may cause undesired operation.
This equipment complie s wit h Part 68 of the FCC Rules. On the rear or
bottom of the unit is a label that cont a ins th e FCC registration number and
other information. If requested, provide this information to the telephone
company.
Trademarks
Documentation Disclaimer
FCC Requirements
compliance with the Cl ass A FCC limits.
Shielded cables mus t be used to ensur e
WARNING:
For use only with a certified Class 2 power supply.
See "Power Source" in Specifications on page 2.
WARNING:
Changes or modifications to this unit not expressly
approved by the party responsible for compliance could void the
user’s authority to operate the equipment.
ii
Notice to Users
The following instructions are provided to ensure compliance with FCC
Rules, Part 68.
1
All direct connections to the network lines must be made using stand ar d
plugs and jacks (compliant with Part 68). The ta ble be low presents a list
of applicable registration jack USOCs, facility interface codes (FICs), and
service order codes (SOCs). Thi s info rmation may be required by the
local telephone company when applying for leased line facilities.
2
If the unit appears to be malfunctioning, it should be disconnected from
the network lines until the sourc e of trouble is determined to be your
equipment or the telephon e li ne . If your e quipment needs repair, it should
not be reconnected unti l it is repaired.
3
The unit has been designed to prevent harm to the network. If th e
telephone company finds that the equipment is exceeding tolerable
parameters , it can temporarily discon n ect service. I n this case, the
telephone company w il l gi ve you advance notice, if possible.
4
Under FCC rules, no customer is authorized to repair this equipment. This
restriction applies regardle ss of wh et her the equipment is in or out of
warranty.
5
If the telephone comp any alters its equipment in a man ner that will affect
the use of this device, it must give you wa rning so that you have the
opportunity for uninterrupted service. You will be advised of your right to
file a compla int with the FCC.
6
If the equipment malfunct ions, all repairs should be performed by our
company or an authorize d age nt. It is the responsibility of users requi ring
service to report the need for service to our company or to one of our
authorized agents.
7
The affidavit at the end of this manual must be completed by the installer.
This digital apparatus does no t exceed the Class A limits for radio noise
emissions from digital apparatus set out in the Radio Interference
Regulations of the Canadian Dep art m en t of Co m munications.
Le présent appareil numér ique n’émet pas de bruits radioé lectriques
dépassant les limites applicables aux ap pa rei ls nu mé ri que s (de la class A)
prescrites dans le Règlement sur le brouillage radioélectr iqu e édicté par le
ministère des Communica tions du Canada.
Notice:
The Industry Canada la be l id entifies certified equipme nt. This
certificati on means that the equipment mee ts certain telecommunications
1.544 Mbps SF
1.544 Mbps SF, B8ZS
1.544 Mbps ANSI ESF
1.544 Mbps ANSI ESF, B8ZS
6.0F
04DU9-BN
04DU9-DN
04DU9-1KN
04DU9-1SN
RJ-48C jack
of 1.544 Mbps
Service
Port ID REN/SOC FIC USOC
Canadian Emissions Requirements
WARNING:
For use only with a certified Class 2 power supply. See
Power Source in Specifications on page 2.
WARNING:
Changes or modifications to this unit not expressly
approved by the party responsible for compliance could void the
user’s authority to operate the equipment.
iii
network protective, opera tional and safety requirements. The Indust ry
Canada does not guarantee the equipment will oper at e to the user’s
satisfaction.
Before installing this eq uipment, users s h ould ensure th at it is permiss ible
to be connected to the facilities of the local telecommunications company.
The equipment must also be installe d using an acceptable method of
connection. In some cases, the com pa ny’s inside wiring associ at e d w it h a
single line individual service may be extended by means of a cer tified
connector assembly (tel ephone extension cord). The cust om er should be
aware that compliance with the above conditions may not prevent
degradation of service in some s itu ations.
Repairs to certified equipment should be made by an authorized Canadian
maintenance facility de sig nated by the supplier. Any repairs or alterations
made by the user to this equipme nt , or equi pm e nt malfunctions, may give
the telecommunications company cause to request the user to disconnect
the equipment.
Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone lines and internal metallic water
pipe system, if present, are conne c te d to get her. This precaution may be
particularly import ant in rural areas.
Caution:
Users should not attempt to make such conne ct ions themselves,
but should contact the appropriate electric inspection authority, or
electrician, as appropriate.
Warranty
Verilink's product warranty c overs repair or replacement of all equipment
under normal use for a five-ye ar pe ri od from date of shipment.
Replacement produc ts m ay be ne w or rec onditioned. Any replaced or
repaired product or part has a ninety (90) day warranty or the remainde r of
the initial warran ty period, whichever is longer. Our in -house Repair Center
services on a standard 10-workday-turnaround basis.
When handling this equipment, follow these basic safety precautions to
reduce the risk of electric shock and inju ry:
•
Follow all warnings and instructions m ar ked on the product and in the
manual.
•
Unplug the hardware from the wall out le t be fore cleaning. Do not use
liquid cleaners or aerosol cleaner s. Us e a slig htly damp cloth for
cleaning.
•
Do not place this product on an un sta ble ca rt , stand, or table. It may fall,
causing serious damage to the product.
•
This product should be operat ed only from the type of power source
indicated on the marking label and manual. If you are unsure of the type
of power supply you are using , co nsul t your dealer or local power
company.
•
Do not allow a nything to re st on the power c or d. Do not loca te this
product where the cord wil l in te rfe re wi th the free movement of people.
•
Do not overload wall outlets and extensi on cords, as this can result in
fire or electric shock.
•
Never push objects of any kind into the unit. They may touch dangerous
voltage points or short out parts that could result in fire or electric shock.
Never spill liquid of any kind on this equipment.
Safety Precautions
iv
•
Unplug the equipment from the wall outlet and refer serv icing to
qualified service personnel u nde r th e following conditions:
•
When the power supply co rd or plug is damaged or frayed.
•
If liquid has been spilled into the pro duct.
•
If the product has been ex posed to rain or w ater.
•
If the product has been dro pped or if the housing ha s been
damaged.
v
vi
Table of Contents
About this Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ix
Manual Organization
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ix
Typographic Conventions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ix
Customer Service and Technical Support
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
x
Support from Your Network Supplier
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
x
Support from Verilink
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
x
Returning a Unit to Verilink
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xi
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Features
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Network Interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Equipment Interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Mechanical
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Power Source
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Industry Standards
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Environmental
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Safety Summar y
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Unpacking and Inspection
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Supplied Materials
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Wall-mount Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Using Adhesive Strips
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Using Screws
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Connections
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Equipment and Network Connections
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Power Connection
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Configuration Switch SW1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Indicators
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Loopbacks
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Network
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Test Jacks
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
About the T1 ESF CSU
1 General Information
2 Installation and Configuration
3 Testing
Affidavit for the Connection of Cus tomer Premises Equipment to
1.544 Mbps and /or Subrate Digital Services
vii
viii
BOUT THE
This is a reference manual. It provides information about unit
installation, configuration and testing. It is
a user’s guide
containing step-by-st ep procedures. This manual is designed to
be used when you n eed specific informat ion about a command,
interface port, configuration parameter, etc. Unless otherwise
noted, the information in this manual applies only to the Verilink
T1 ESF CSU (also referred to as
.)
The chapters and appendices in this manual are arrang ed for
quick reference when you need it. You do not have to read
previous chapt ers to unde rstand t he subseque nt chapters .
-- This chapter introduces
the unit, lists the features, and provides specifications.
-- This chapter
describes unit inst allation, p ort and power connections, and
switch settings.
-- This chapter describes the indicators,
test switch, loopbacks, and test jacks.
-- Appended to the end of this ma nual, this a ffidavit may be
required by your telco.
The following table lists the conventions that are used throughout
this guide.
Convention
Description
A
calls attent ions t o im po rtant feat ur es
or instructions.
A
alerts you to serious risk of data
loss or other results that may cause you or the
unit trouble if the warning is not heeded.
A
About this Manual
Manual Organization
Chapter 1, "General Information"
❥
Chapter 2, " Installat ion and C onfigurati on"
❥
Chapter 3, "Testing"
❥
T1 ESF CSU
not
the unit
“Affidavit for the Connection of Customer Premises
❥
Equipment to 1.544 Mbps and /or Subrate Digital Services”
Typographic Conventions
Notice
Caution
About this Manual
ix
Verilink provides easy access to customer support information
through a vari ety of services . This se ction descr ibes these
services.
If assistance is required, contact yo ur networ k supplier. Many
suppliers are authorized Verilink service partners who are
qualified to provide a variety of services, including network
planning, installation, hardware maintenance, application
training, and support ser vices. Whe n you contac t your network
supplier for assistance, have the following information ready:
Diagnostic error message s
A list of system hardware and software, including revision
levels
Details about recent configuration changes, if applicable
If you are unable to recei ve support from you r network supplier
or want to contact us directly, Verilink offers worldwide
customer support by telephone, e-mail, and through Verilink’s
Internet Web site.
Customer suppor t is avail able by tele phone 24 h ours a day, 7
days a week. To speak directly with a Verilink customer service
representative, you may dial one of the following numbers:
Sales and Marketing:
800-VERILINK (837-4 546)
Technical Support
800 - 285-2755 (t oll-free)
You can request sales and marke ting inform ation or pose a
technical suppor t question about your Verilink product by
A
Warning
alerts you to the risk of serious
damage to the unit or injury and possible
death to the end user.
“Enter” vs.
“Type”
When the word
is used in this guide, it
means type something, then press the Return
or Enter key. Do not press the Return or Enter
key when an instruction simply says
.
Refers you to other sect ions of this manual.
Convention
Description
enter
Italics
Customer Service and Technical Support
Support from Your Network Supplier
❥
❥
type
❥
Support from Verilink
Telephone
❥
❥
E-mail
BOUT THE
A
x
T1 ESF CSU
:
contacting us at the e-mail addresses provided below. Verilink
will respond to e-mailed requests for support during regular
business hours (8–5 CST, Monday–Friday).
❥
Sales and Marketing: info@verilink.com
Technical Support: support@verilink.com
Access the latest netw orking infor mation on Verilink’s Internet
Web site by entering our URL into your Internet browser:
http://www.verilink.com/
This service features information about Verilink products,
customer service, technical support, latest news releases, and
more.
If for any reason you must return your Verilink product, it must
be returned to the factory, shipping prepaid and packa ged to the
best commercial standard for electronic equipment. Verilink will
pay shipping charges for delive ry on return. You are responsible
for mode and cost of shipment to Verilink.
You must have a Return Mate rial Authorization (RMA) number
marked on the shipping package. Products sent to Verilink
without RMA numbers will be returned to the se nder unopened,
at the sender ’s expense.
A product sent directly to Verilink for repair must first be
assigned a Return Materials Authorization (RMA) number. You
may obtain an RMA number by calling Customer Service at
800-VERILINK, extension 3002. Customer Service will also
give you a shippi ng address.
When calling for an RMA, please have the following information
available:
Model number and seri al number for each unit
Reason for return and symp toms of problem
Warranty status (if known)
Purchase order number to cover charges for out-of-warranty
items❥Name and phone number of person we can contact if we have
questions about the unit(s)
❥
Internet
Returning a Unit to Verilink
❥
❥
❥
❥
Returning a Unit to Verilink
xi
❥
Mode of shipment required (second-day air is the normal
mode of shipment for all returned material unless otherwise
specified).
BOUT THE
A
xii
T1 ESF CSU
1
Verilink’s T1 ESF CSU provides an economica l solution for pr oviding the T1 interface
between customer premises equipment and T1 facilities (telco or private). Each unit is
compatible with all T 1 carrier transmissio n equipment and is designed to comply with
all industry-standard specif ications. Both the transmitt ed and received 1.544 Mbps
signals are conditio ned.
The T1 ESF CSU is an in dustry standard T1 channe l service unit. It detects and
activates network initiated loopbacks, monitors bipolar violations, and maintains pulse
density of the transmitted signal. The unit is capable of interfacing to both B8ZS and
AMI circuits and c an c onver t si gnal fo rmat s or lin e co din g to i nt egrat e ol de r equ ipme nt .
Automatic transmission of ESF performance report messages (PRM) is also supported
by the T1 ESF CSU.
The unit is de signed to be wallmou nted usin g hook-and -loop fasten ers or “T” openings
on the base (like a telephone). The unit can also be set on a desktop.
The unit provi des ALBO circu itry on t he network re ceive path. T he network ALBO
supports a receive range from +1 to
30 decibels. The DTE suppo rts DSX1 signal
ranges up to 655 feet. The un it also provides line bu ild out (LBO) circui try on both
network and DTE. The network transmit LBO is user selectable in four increments
(from 0 to
22.5 decibels). The DTE transmit LBO is user selectable in five increments
from 0 to 655 feet.
The T1 ESF CSU operates from an external power source. Network and DTE
connections are made through RJ- 4 8C connectors. The units have primary and
secondary surge protection on both the network and DTE side (meeting the UL 1950
requirements).
Introduction
−
ENERAL INFORMATION
G
−
Features
Provides T1 facility interface and jitter tolerance per ANSI
✦
T1.102, T1.403, and AT&T TR 62411
Supports B8ZS or AMI formats
✦
Conversion for signal formats and line codi ng
✦
Supports PRM in ESF mode
✦
Space-saving design ca n be desktop or wall mount ed
✦
Standard 5-year warranty
✦
Introduction
1
Specifications
Line Rate:
1.544 Mbps (± 50 ppm)
Line Framing:
D4 or ESF
Line Code:
AMI or B8ZS
Line Impedance:
balanced 100
(± 5%)
Input Signal:
DS1, +1 to -30 dB (ALB O)
Output Signal:
3.0 V, ±15%, base-peak int o 100
Line Build Out:
0, −7.5, −15, and
22.5 dB attenuat ion
Line Protection:
1000 V lightning, fu sed input and output
Jitter Control:
per TR 62411 and T1.403
Pulse Density:
per TR 62411
Line Rate:
1.544 Mbps (± 50 ppm)
Line Framing:
D4 or ESF
Line Code:
AMI or B8ZS
Line Impedance:
balanced 100
(± 5%)
Input Signal:
DSX1 to 655 feet
Output Signal:
Selectable DSX1 signal level from 0 to
655 feet
Line Protection:
1000 V lightning, input and output
Mounting:
desktop or wallmount
Dimensions:
1.25" H, 3.5" W, 5.75 " D
Weight:
1 pound
External:
Input: 115 VAC
Output: 9 VDC, 1.2 A
FCC Compliance:
Part 15 Class A Subpart B, Part 68
Safety:
UL 60950
Industry Canada:
CS- 03, Issue 8
Operating Temp:
0° to 50°C (32° to 122°F)
Storage Temp:
20° to 70°C (
4° to 158°F)
Humidity:
95% max (non - con densing)
Network Interface
Equipment Interface
Ω
Ω
−
Ω
Mechanical
Power Source
Industry Standards
Environmental
ENERAL INFORMATION
G
2
−
−
NSTALLATION AND
This chapter contains information and instructions required to
prepare Verilink’s T1 ESF CSU for use. Included are initial
inspection procedures, mounting instructions, configuration
guidelines, connection and powering information.
This manual contains information and warnings that must be
followed to ensure safe operation and retain the equipment in a
safe condition.
This unit is carefully packaged to prevent damage in shipment.
Upon receipt, inspect the shipping container for dam age. If the
shipping con tainer or c ushionin g material is damage d, notify the
carrier immediately and make a nota tion on the delivery receipt
that the container was damage d (if possible, obtain the sign ature
and name of the person ma king deliv ery). Ret ain the pack aging
material until verifying the contents of the shipment are complete
and the unit has been c hecked both mec hanical ly and e lectric ally.
If the contents of the shipment are incomp lete or, if there is
mechanical damage or defe ct, notify Verilink. If the shipping
container is also damaged , or the cushioning materia l shows
signs of stress, notify the carrier of the damage as well as
Verilink. Keep the shipping materials for the carrier ’s inspection.
Verilink will arrange for repair or replacement without waiting
for claim settlement.
The T1 ESF CSU is shipped from the factory with the following
standard equipment:
I
2
ONFIGURATION
C
Introduction
Safety Summary
This WARNING sign denotes a potential hazard to the operator. It
calls attention to a procedure or practice that, if not correctly
performed or adhered to, could result in injury or loss of life. Do
not proceed beyond a WARNING sign until the indicated
conditions are fully understood and met.
Units are susceptible to damage caused by static electricity. Use
ESD (electrostatic discharge) precautionary m easures, such as
wearing electrostatic grounding straps.
Unpacking and Inspection
Supplied Materials
Introduction
3
✦
external DC power supply
reference manual
adhesive strips
two 9-foot RJ4 8-to-RJ48 cab les (part n umber 9 - 1544 -6 19 -009)
Select a place close to an 115 VAC outlet with clearance for
the signal and power cables as well as for bantam test cables.
The indicators and switches should be easil y accessible.
Verify the mounting surface is clean.
Cut the adhesive strip to the desired length and affix the
backing of one piece to the underside of the unit.
Attach the other adhesive strip to the piece on the underside of
the unit.
Remove the backing to expose the sticky surface.
Press the underside of the unit firmly against the sel ected p lace.
Select a place close to an 115 VAC outlet with clearance for
the signal and power cables as well as for bantam test cables.
The indicators and switches should be easil y accessible.
Vertically place two #6 screws 3-13
32 inches apart at t he
selected place. Leave the screws out a bout an eighth of a n inch.
Place the upright unit over the screws until the holes engage
and slide the unit down until it locks.
The T1 ESF CSU ha s RJ- 48C connectors for the netw ork and
equipment interfaces an d a terminal strip for the power
connection. The following paragraph s desc ribe these co nnect ion s.
Table 2-1 shows the pinout for the networ k and equi pment
connectors. The interface for these connectors is an RJ-48C jack.
1
R1 (ring, receive from network)
R1 (ring, transmit to equipment)
2
T1 (tip, receive from net w ork)
T1 (tip, transmit to equipment)
4
R (ring, transmit to network)
R (ring, receive from network)
5
T (tip, transmit to network)
T (tip, receive from netwo rk)
3, 6–8
not used
not used
✦
✦
✦
Wall-mount Installation
Using Adhesive Strips
1
2
3
4
5
6
Using Screws
1
2
3
Connections
Equipment and Network Connections
Table 2-1 Pinout for Network/Equipment Connectors
Pin NET Equipment
NSTALLATION AND CONFIGURATION
I
4
⁄
Po wer Connection
Plug the connector from the power supply into the unit. Plug the
transformer into an appropriate grounded outlet. This will apply
power to the unit.
This section describes the configuration of the T1 ESF CSU.
This unit is configured using DIP switches. Refer to Figure 2-1
for switch locations.
Switch SW1 is locat ed on the CSU c over. This eight-posit ion dip
switch provides the following configuration parameters.
(Underlined text indicates default settings.)
Configuration
NOTICE:
of the optio n switches. C hanges to the NET L BO and EQ L BO
switches do not take effect until the unit is reset. Reset the unit
by removing power from the unit and the n reapplying pow er. The
loopback switches acti vate as soon as they are thrown.
On power up, each unit is configured to the settings
Figure 2-1 Verilink T1 ESF CSU
Configuration Switch SW1
Configuration
5
NOTICE:
EQ LBO
Positions SW1-2, SW1 -3, and SW1 -4 set the EQ LBO (line
build out) transmit signal value towards the customer equipment.
The value should match the cable length from the EQ port to the
attached equipment. The default is
0 to 133 feet (AAA)
.
Equipment Loop
Position SW1-5 sets equipment loopback functions. When the
switch is set to Enabled (B), the unit is placed into an equipment
loopback where the equ ipment receives al l the data it sends. T he
unit remains in equipment loopback until the switch is set to
Disabled (A)
. The unit send s an unfra med all ones pattern to the
network.
Network Loop
Position SW1-6 sets network loopback functions. NET LOOP
can be set to Auto or Manual.
Auto (A)
enables the unit to
respond to network loop requests. Setting the switch to Manual
(B) forces the unit into a manual network loopback. During loop,
the unit sends an unframed all ones pattern to the equipment. It
responds to inband CSU loop (1-in-5 pattern) and unloop (1-in-3
pattern), ESF out-o f-band line lo opback/payload loopback, and
loop up/loop down codes, and responds to the unive rsal
loopdown code even if the switch is in the "Manual" position.
Network LBO
Positions SW1- 7 and SW1-8 set the network line build out
signal level transmitted towards the T1 facility. The default
output level is
0 dB (AA)
. Change the signal level to -7.5 dB,
-15 dB, or -22.5 dB as necessary. The telco can provid e the
proper setting. If unsure of the setting, leave it at 0 dB.
Position SW1-1 is not enabled for use.
NSTALLATION AND CONFIGURATION
I
6
3
This chapter describes the diagnostic and test features of
Verilink’s T1 ESF CSU. The unit is controlled manually using
front panel DIP switches (the DI P switches ar e discussed on
page 5). The fr ont panel indicators and side bant am jacks ar e
described below.
The unit indicators convey major alarm conditions and looping
status.
POWER
This green indicator lights when power is applied to the unit.
LOOPBACK
This amber indicator lights under the following conditions: the
NET LOOP switch is set to Manual; the EQUIP LOOP is placed
in the Enabled position; or the unit receives an inband (or
out-of-band) loop code from the network.
NET LOS
This red indicator lights if the internal alarm circuitry detects a
loss of signal co ndition fo r
175 bit times or if it detects an
unframed error from the network. The indicator stays lit until the
unit detects
4 pulses in 32 bit t imes.
EQ LOS
This red indicator lights if the internal alarm circuitry detects a
loss of signal co ndition fo r
175 bit times or if it detects an
unframed error from the DTE. The indicator stays lit until the
unit detects
4 pulses in 32 bit tim es.
Position SW1-5 sets equipment loopback functions. When the
switch is set to Enab led, the unit i s placed into a n equipment
loopback where the DTE receives all the data it sends. The unit
sends an unframed all ones pattern to the network end. The unit
remains in equipment loopback until the switch is set to
Disabled.
Introduction
Indicators
ESTING
T
≥
≥
≥
≥
Loopbacks
Equipment
Equipment
Figure 3-1 Local Loopback
T1 ESF CSU
AIS
Network
Introduction
7
Network
Position SW1-6 sets network loopback functions. NET LOOP
can be set to Auto or Manual. “Auto” enables the unit to respond
to network lo op reques ts (a 1- in-5 pat tern) and remain lo oped
until it receives a 1-in-3 pattern. Setting the switch to “Manual”
forces the unit into a manual network loopback until the switch
is returned to Auto or loopdown code is received from the
network. The unit sends an unframed all ones pattern to the
equipment end unless the equipment is also in loopback.
The following paragraphs desc ribe other loops that may be
initiated on the unit. Refer to the looping diagrams below for
further information.
CSU Inband LLB:
Each unit can be looped remotel y by
generating to wards it a stan dard CSU lin e loopback co de (00001
repeating for
5 seconds, framed or unframed ). Once lo oped,
the received signal from the T1 facility (NET IN) is regenerated
and transmitted back to the T1 facility (NET OUT).
CSU Inband Unloop:
Each unit can be unloop ed remotely by
generating to wards it a st andard CSU l ine unloop c ode (001
repeating for
5 seconds, framed or unframed).
T1.403 LLB:
The unit supports the T1.403 line loopback
command (the FDL LLB format is 00001110 11111111). Once
looped, the received signal from the T1 facility (NET IN) is
regenerated and transmitted back to the T1 facility (NET OUT).
T1.403 LLB Unloop:
The unit s upports T1 .403 FDL line
loopback unloop command messages (00111000 11111111
repeating).
T1.403 / 54016 PLB:
The unit supports T1.403 FDL payload
loopback command messages (00010100 11111111 repeating).
Equipment
AIS
Figure 3-2 Line or CSU Loopback
≥
≥
Network
Equipment
AIS
Figure 3-3 Payload Loopback (with Frame and CRC
regeneration)
ESTING
T
8
CRC
FRAME
Network
T1.403 / 54016 PLB Unlo op:
The unit supp orts T1 .403 FDL
payload loopbac k unloop command message s (00110010
11111111 rep ea ti ng ).
Te s t J a ck s
The bantam jacks located on the left side of the unit provide
signal access as follows :
The FROM NET and TO NET j acks can be use d to break t he
network connect ion to the T1 ESF CSU int ernal circuitr y and
connect the network to a piece of test equipment.
The NET MON and EQ MON jacks are used for passively
monitoring recei ved signals pa ssing throug h the unit ( between
the DTE and the network).
The FROM EQ and TO EQ ja cks can be u sed to break th e
equipment connection to th e T1 ESF CSU internal circuitry and
connect the equip ment to a pie ce of test equi pment
NOTICE:
the EQ LOS indicator lights. This is due to the test connection
and is not an indication of signal loss from the equipment.
When connected to the TO EQ and FROM EQ jacks,
Test Jacks
9
10
ESTING
T
FFIDAVIT FOR THE
A
ONNECTION OF
C
REMISES
P
1.544 M
IGITAL
D
For work to be performed in the certified territory of
Telco’s Na me: _____________ _________ ___________ _________ _________ _______
State of ___________ _________ ___________ _________ _________ _________
County of _____________ ___________ ___________ ______________ _________
I, ___________ _________ _________ ___, of _ _________ ___________ _________ ___,
(Authorized Representative Name) (Customer Name)
_____________ ___________ ____________ ____, _________ ___________ ________,
(Customer Address) (Telephone Number)
BPS AND/OR
S
QUIPMENT TO
E
ERVICES
USTOMER
C
S
UBRATE
being duly sworn, state:
I have responsibility for the operation and maintenance of the terminal equipment to be
connected to _____ ___________ ______ 1.544 Mbps and/or ___________________
subrate digital servi ces. The terminal equipment to be connected complies with Part 68
of the Commission’s rules except for the encoded analog content, and billing protection
specifications. With respect to encoded analog content and billing protection:
I attest that all operations associated with the establishment, maintenance, and
✦
adjustment of the di gital CPE with respect to enco ded analog c ontent and enc oded
billing information continuously complies with Part 68 of the FCC’s Rules and
Regulations.
The digital CPE doe s not transmit digital signal s containing encoded analog content
✦
or billing information which is intended to be decoded within the
telecommunicatio ns network.
The encoded analog and billin g protection is factory set a nd is not u nder the contro l
✦
of the customer.
I attest that the operator(s) maintainer(s) of the digital CPE responsible for the
establishment, main tenance, and ad justment of the encoded analog conten t and billin g
information has (have) been trained to perform these functions by successfully
completing one of the fo llowing: Check approp riate ones(s).
A. Training course provided by the man ufacturer/grante e of the equipm ent used to
❏
encode analog signals; or
B. Training course provided by the customer or authorized representative, using
❏
training materials and instructions provided by the m anufacturer/grantee of the
equipment used to encode analo g signals; or
C. Independent training course (e.g., trade school or technical institution) recognized
❏
by the manufacturer/grantee o f the equipm ent used to encode analog signals; or
D. In lieu of the proceeding training requirements, the operator(s) maintainer(s) is
❏
(are) under th e control o f a supervis or traine d in accordanc e with ____ _____ above.
I agree to provide ____ ______ _______ _________ ______ wi th prop er document ation to
(Telco ’s Name)
demonstrate compliance with the information as provided in the proceeding paragraph,
if so requested.
_____________ ___________ ____________ ____________ (S ignature)
_____________ ___________ ____________ ____________ (Title)
_____________ ___________ ______________ __________ (Date)
Subscribed an d Sworn to b efore me t his _____ _ day of _ _________ ________, 1 9____.
________________________________________________
Notary Public
My Commission expir es ______ ____________ _________ _________.
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