TC Communications TC8518 T1, TC8518 E1 User Manual

TC8518 T1/E1, Voice/Data & 10/100

Base-T Ethernet Fiber Optic

Multiplexer

User Manual

MNL-85180-01-22

TC Communications
17881 Cartwright Road
Irvine, California U.S.A. 92614
Tel. [phone]
Fax [phone]
E-Mail: sales @tccomm.com
Website: www.tccomm.com

All Rights Reserved
Copyright 2011 by TC Communications. Products describe
one or more U.S. and foreign patents.

d in this publication are protected by

Trademarks

The TC Communications logo is a registered trademark.
JumboSwitch is a registered trademark of
Other product and brand names may be trademarks or registered trademarks of th

TC Communications.

eir respective owners.

Documentation Disclaimer

This document is provided “as-is” and is to be used only as a general guide. TC Communications disclaims all
warranties, express or implied, regarding the accuracy of the information. TC Communications shall not be liable for
any indirect, special, incidental, or consequential damages (including damages for loss of business, loss of profits,
loss of business information, business interruption or other pecuniary loss) arising out of errors in this document.

The information given in this document is reviewed regularly and any necessary corrections will be included in
subsequ
improvements without notice.

Dissemination or reproduction of this document, or evaluation
except where expressly permitted. Violations are liable for damages. All rights reserved, particularly for the
purposes of patent application or trademark registration. This document contains proprietary information, which is
protected by copyright. All rights are reserved. No part of this document may be photocopied, repro duced or
translated to another language without the prior written consent of TC Communications.

ent editions. We appreciate any suggested improvements. We reserve the right to make technical

and communication of its contents, is not authorized

Record of Revisions

Revision Date Description of Changes

1.0

2.0

2.1

2.2

2 TC8518 Rev 2.2 User Manual

10/22/07 Initial Release of TC8518.

09/23/10 Add voice and data option.

02/07/12 Update local/remote loop back instructions.

01/29/14 Updated rear expansion images.

Guide to Alert Symbols

These alert symbols are used in Caution, Warning, and Danger notes.

Symbol Meaning

Pinching or crushing hazard

Electrical hazard.

Equipment alert: be careful of
damage from static electricity

General alert: used for all
other hazardous conditions
(referring to people, not
equipment).

TC8518 Rev 2.2 User Manual 3

4 TC8518 Rev 2.2 User Manual

TABLE OF CONTENTS

1Introduction

1.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.3 TC8518 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.3.2 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.3.3 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.3.4 Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.3.5 Specifications (TC8518) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1.3.6 Pin Assignments, Configurations and Default Settings. . . . . . . . . . 1-12

1.3.7 Default Software Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

1.3.8 Default Unit Alarm Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

1.3.9 Optical Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

1.3.10 Environmental & EMI Compliance . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

1.3.11 Physical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

2 Installation

2.1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3 Environmental Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3.1 Equipment Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.4 Mechanical Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.4.1 19-Inch Rack Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.4.2 Power Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.5 Unit Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.5.1 Powering on the TC8518 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.6 Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.7 Quick-Start Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.7.1 Installation Procedure Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

3 Management through the Web

3.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.3 Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.3.1 Home: Physical Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3.2 Home: Unit Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.3.3 Home: Unit Alarm: Alarm Trigger Criteria. . . . . . . . . . . . . . . . . . . . . 3-5

3.4 Basic Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.5 IP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3.5.1 IP Address Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

3.6 Advanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

3.6.1 Advanced: About TC8518. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

3.6.2 Advanced: Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

3.6.3 Advanced: Reboot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

3.6.4 Advanced: Restore Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

3.6.5 Advanced: Firmware Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

3.6.6 Advanced: Upgrade From a Computer on the Network . . . . . . . . . 3-19

3.7 Simple Network Management Protocol (SNMP) Settings . . . . . . . . . . 3-20

TC8518 Rev 2.2 User Manual TOC-1

TABLE OF CONTENTS

3.8 Login Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

3.9 T1/E1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

3.9.1 T1/E1 Options: Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

3.9.2 T1/E1 Options: Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

3.9.3 T1/E1 Options: Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

3.9.4 T1/E1 Options: Statistics Error Seconds Total . . . . . . . . . . . . . . . . 3-25

3.9.5 T1/E1 Options: Statistics History . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26

3.9.6 T1/E1 Options: Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

3.10 Optical Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

3.10.1 Optical Options: Optical Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

3.10.2 Optical Options: Optical Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

3.10.3 Optical Options: Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

3.11 Ethernet Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

3.11.1 Ethernet Options: Po rt Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

3.11.2 Ethernet Options: Rate Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

3.11.3 Ethernet Options: Po rt Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

3.11.4 Ethernet Options: Po rt Statistics: Port History . . . . . . . . . . . . . . . . 3-34

3.11.5 Ethernet Options: Port Statistics: Event Statistics . . . . . . . . . . . . . 3-35

3.11.6 Ethernet Options: Ethernet over Fiber . . . . . . . . . . . . . . . . . . . . . . 3-36

3.12 Logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38

4 Command Line Interface

4.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.3 Console/Telnet Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.3.1 IP Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.3.2 Login Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.3.3 Advanced Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.3.4 Firmware Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.3.5 Serial Port Setting (Apply to Serial Expansion Card) . . . . . . . . . . . . 4-6

4.3.6 Phone Port Settings (Applies to Phone expansion card) . . . . . . . . . 4-7

5 SNMP Management

5.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 SNMP Query . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.3 SNMP Third Party Management Software . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.4 SNMP Trap Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

6 Troubleshooting

6.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2 All LEDs are "OFF". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3 "Alarm Condition" - ALARM LED on the front panel. . . . . . . . . . . . . . . . 6-2

6.4 Optic Cable Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.5 Calculating the loss on the Fiber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.6 Loopback Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.6.1 T1/E1 Local Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.6.2 Optical Local Loopback Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.6.3 Ethernet Local Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

TOC-2 TC8518 Rev 2.2 User Manual

TABLE OF CONTENTS

6.6.4 T1/E1 Remote Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.6.5 Ethernet Remote Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.7 Loopback Test - Remote Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.8 T1/E1 CSU loop up & loop down codes. . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Appendix A Return Policy

A.1 Return Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

A.1.1 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

A.1.2 Limitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Appendix B Safety

B.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

B.2 Certified Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

B.2.1 Qualification Requirements for Personnel . . . . . . . . . . . . . . . . . . . . B-1

B.2.2 National and International Safety Regulations . . . . . . . . . . . . . . . . . B-1

B.2.3 Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

B.3 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

B.4 Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glossary-1

TC8518 Rev 2.2 User Manual TOC-3

TABLE OF CONTENTS

TOC-4 TC8518 Rev 2.2 User Manual

Chapter 1 Introduction

1.1 Introduction

This manual contains a description of the TC8518 as a T1/E1, Data/Voice &
Ethernet Fiber Optic Multiplexer that provides T1/E1, Data/Voice & Ethernet
connectivity over fiber optics. It supports 8/12/16 channels of T1 or E1 and 3-port
Ethernet switch over single mode (1300/1550nm), or multimode fiber (1300nm).
The TC8518 has any one of these options: 8 additional T1, 4 additional E1, 8­channel voice, 4-channel 2-wire/4-wire analog, 8-channel data (RS-232/RS-422/RS-

485).
This manual intends to:

- document items necessary to define each product and its method of
operation

- provide technical information of the functional capabilities and
performance levels necessary for system level networking designs

Figure 1-1 TC8518 (front)

TC8518 Rev 2.2 User Manual 1-1

Chapter 1 Introduction General Information

1.2 General Information

This manual is for the operation and maintenance of the TC8518. It is intended for
TC Communications factory-trained personnel.

1.3 TC8518 Product Description

This manual contains a description of the TC8518 as a T1/E1, Data/Voice &
Ethernet Fiber Optic Multiplexer that provides T1/E1, Data/Voice & Ethernet
connectivity over fiber optics. It supports 8/12/16 channels of T1 or E1 and 3-port
Ethernet switch over single mode (1300/1550nm), or multimode fiber (1300nm).
TC8518 has any one of these options: 8 additional T1, 6 additional E1, 8-channel
voice, 4-channel 2-wire/4-wire analog, 8-channel data (RS-232/RS-422/RS-485).

It offers advanced features, such as jitter removal and support for AMI, B8ZS
coding for T1 and AMI, HDB3 coding for E1. The TC 8518 offers optimum
flexibility, extremely low current consumption, and high reliability.

Transparent to the framing format, the TC8518's T1/E1 interface shapes the transmit
pulse to support CCITT G.703. Copper line distances for connecting T1/E1 can
range from 0 to 655 feet. The internal elastic buffer removes jitter from the
transmitted data.

Each T1/E1 channel LED indicator eases installation and facilitates troubleshooting.
These LEDs can indicate an Alarm condition, T1/E1 Signal Loss, active Sync status
and more.

The 3-Port Ethernet switch supports half/full-duplex and a combined bandwidth of
100Mbps. The TC8518 supports VLAN* and supports Ethernet Huge Frames (1916
bytes). Each T1 or E1 channel is independent, transparent to the framing format, and
supports all applicable standards and line codes( AMI, B8ZS for T1 and HDB3,
AMI for E1).

Management, setup, diagnostics, and monitoring are accessed via Web, SNMP,
Telnet or Serial Console.

The TC8518 supports fiber optic distances up to 100 km and offers an optional two­way, "one fiber" communication option to maximize fiber cable usage. Standard
redundant power and redundant optics including automatic switchover ensure
maximum reliability.

Highly cost effective when used to multiplex T1/E1 channels & 10/100 Ethernet
over a single duplex fiber, the TC8518 is often used in interconnecting PBXs in
different buildings, extending satellite down links, transmiting beyond the normal
limitation of twisted pairs (without a repeater), or connecting cell sites to central
offices.

The TC8518 is available in basic stand-alone or 1U high rackmount. SC Optical
Connectors and RJ-48F ports are standard. Standard power is 90/260VAC and
includes redundant power supplies. Optional power sources include 24VDC,
48VDC, and 125VDC.

1-2 TC8518 Rev 2.2 User Manual

Chapter 1 Introduction TC8518 Product Description

1.3.1 Features

• Integrates Multiple T1/E1 and Ethernet Over Fiber Optics

• 8, 16, 20, or 24 Channels of T1 or 8, 16, 20 Channels of E1

• 3-Port Auto-Negotiating & Auto-Sensing Ethernet Switch (100Mbps total
bandwidth)

• Optional Voice (up to 8 channels FXS/FXO), 2-wire/4-wire analog (up to 4
channels), or Data (up to 8 channels RS-232/RS-422/RS-485)

• Ethernet VLAN* and Rate Limiting Capabilities, plus Statistics Monitoring
(T1/E1, Optics, Ethernet)

• Hi-Temp (-20 to +70) and Extreme Temp (-40 to +80) Versions (optional)

• Supports the Following Line Codes. T1: AMI/B8ZS, E1: AMI/HDB3

• T1/E1 Jitter Attenuator

• Loopback support for testing/troubleshooti ng: Local and Remote Loopback for
Ethernet, T1/E1, and Optics

• Management Using Web, SNMP, Console, and Telnet

• Distances ranging up to 2km on Multimode (1310nm) and up to 100km on
Single Mode (1310nm/1550nm)

• Two-way "One Fiber" Communication (optional)

• Standard Optical Redundancy and Power Redundancy

• Power Supplies Available: 90-260VAC, 24VDC, -48VDC, or 125VDC

• Local Dry Contact Alarm Relay

• Network Time Server (NTP)

• Rackmount or Standalone

* Future Release

TC8518 Rev 2.2 User Manual 1-3

Chapter 1 Introduction TC8518 Product Description

Ethernet Ports

Ethernet Ports
Status LEDs

Fiber Ports

Fiber Ports
Status LEDs

T1/E1 Ports T1/E1 Ports

Status LEDs

Console Port

T1/E1 Ports

Power LEDs

Alarm Relay

Alarm LED

ACO

Reset

1.3.1.1 TC8518 Front Panels

The TC8518 front panel consists of:

• Power Source A and B availability

• Alarm Relay (ALM RLY)

• Alarm (ALM)

• ACO Button

• Console Port (CON)

• 3 Ethernet Ports and related status LEDs

• 2 Fiber Ports and related status LEDs

• 16 T1/E1 Ports and related status LEDs

Figure 1-2 TC8518 Front Panel Connectors and Indicators

1-4 TC8518 Rev 2.2 User Manual

Chapter 1 Introduction TC8518 Product Description

TC8518 Front Panel

TC8518 Rev 2.2 User Manual 1-5

Chapter 1 Introduction TC8518 Product Description

1.3.1.2 TC8518 System Configuration

TC8518 T1:
Standard:

4CH T1, 8CH T1, 12CH T1 and 16CH T1

Options (Only one of the following can be selected):

1. Phone FXS: 4CH FXS or 8CH FXS

2. Phone FXO: 4CH FXO or 8CH FXO

3. 2 wire/4 wire analog (up to 4 channels)

4. Serial: 4CH RS-232 or 8CH RS-232, with RTS CTS

5. Serial: 4CH RS-422/485 or 8CH RS-422/485

6. Serial: 4CH RS232 w/RTS CTS+4CH RS422/485

7. Additional T1: 4CH or 8CH

TC8518 E1:
Standard:

4CH E1, 8CH E1, 12CH E1 and 16CH E1

Options (Only one of the following can be selected):

1. Phone FXS: 4CH FXS or 8CH FXS

2. Phone FXO: 4CH FXO or 8CH FXO

3. 2 wire/4 wire analog (up to 4 channels)

4. Serial: 4CH RS-232

5. Serial: 4CH RS-422/485

6. Additional E1: 4CH

1-6 TC8518 Rev 2.2 User Manual

Chapter 1 Introduction TC8518 Product Description

TC8518 with T1/E1
Expansion (Back)

TC8518 with FXS
Expansion (Back)

TC8518 with FXO
Expansion (Back)

TC8518 with RS-232/
RS-422/RS-485 (Back)
*For Future Release

TC8518 with 4
Channel 2 Wire or 4
Wire Analog (Back)

Figure 1-3 TC8518 Expansion Options

TC8518 Rev 2.2 User Manual 1-7

Chapter 1 Introduction TC8518 Product Description

1.3.1.3 Hardware

The TC8518 has these standard features:

• Power, Fiber Redundancy

• Full interoperability and compatibility combined with seamless, transparent
integration with other Layer 2 Ethernet switches

• Local Dry Contact Alarm Relay (DCAR)

• System readout LEDs

1.3.2 Environment

The TC8518 is an industrially hardened platform ruggedized for extreme weather
conditions. The standard temperature option encompasses most environmental
conditions, however, the TC8518 is also offered with an extreme temperature option
for harsh conditions. Each card is monitored for temperature. There are no cooling
fans or filtering devices.

• High Temperature (-20°C to +70°C)

• Extreme Temperature (-40°C to +80°C) Optional

1.3.3 Power

Each TC8518 is furnished with dual power inputs. There are several power supply
input options available, see TC8518 System Configuration, on page 1-6.

• LEDs indicate if power is being supplied to the unit

• Dual power input is available

1.3.4 Management

The TC8518 has the following management features:

• Programmable Unit Alarms

• Remote management (Web, Telnet, SNMP)

• Security

1.3.4.1 Simple Network Management Protocol

Simple Network Management Protocol (SNMP) is used in network management
systems to monitor network-attached devices for conditions that warrant
administrative attention. The TC8518 comes standard with a built-in SNMP Agent.

The MIB file that TC provides is compatible with and may be run on any third party
SNMP Management software. See

1-8 TC8518 Rev 2.2 User Manual

SNMP Management for a complete description.

Chapter 1 Introduction TC8518 Product Description

1.3.4.2 Console Terminal Sessions

A command-line interface (CLI) is a method for interacting with the system. It
provides information to the user through the use of terminal interface via the console
port.

TC8518 Rev 2.2 User Manual 1-9

Chapter 1 Introduction TC8518 Product Description

1.3.5 Specifications (TC8518)

Optical Fiber Interface

Wavelength 1310 nm Multi-mode

1310/1550 nm Single Mode
Connector SC Standard
Loss Budget 15dB Multimode 1310nm @ 62.5/125µm

Up to 40dB Single Mode 1310/1550nm @9/125µm

Optical Fiber Interface Characteristics

Multi-Mode

Wavelength (nm) Connector Distance (km) Loss Budget
Uni-direction 1310 SC (Subscriber Connector) 2

15

Single Mode

Uni-direction 1310 SC (Subscriber Connector) 30 20
1310 SC (Subscriber Connector) 50 30
1550 SC (Subscriber Connector) 20 12
1550 SC (Subscriber Connector) 100 40
Single bi-direction

master) 1310/1550

(

SC (Subscriber Connector) 30 20

T1 Line Interface

Line Rate 1.544 Mbps ± 50 bps Output Signal DSX1
Line Code AMI or B8ZS Framing Transparent
Input Signal ABAM cable length up to

5 feet

65

1-10 TC8518 Rev 2.2 User Manual

Connector RJ48C

Chapter 1 Introduction TC8518 Product Description

E1 Line Interface

Line Rate 2.048 Mbps ± 50 bps Connector RJ48C
Line Code AMI, HDB3 Line Impedance 120 Ohm for twisted

ir, 75 Ohm coax/

pa
RJ48C

Ethernet Switch

• 10/100 Mbps half/ full duplex Ethernet Switch over 3 Ports.

• Support VLAN and extended Ethernet frame support.

Management Port

Connector RJ45 on front panel (10/100 Ethernet ports

1, 2, & 3)

Protocol Web, SNMP, Telnet, Console

Console

Connector RJ45 on front panel (CON/RS-232 port)
Electrical RS232 Interface
Baud Rate 9600

Indicators

• Power A, Power B, Unit Alarm, T1/E1 Channel, Local Test, Remote Test, Remote

Console

• Optics: SYNC, RDI, OPT-A, OPT-B,

• Ethernet: 100M, FUL/COL, LINK/ACT

• Local optical signal receives in

• Remote optical signal receives indication

USE-B

dication, working and protection.

, working and protection.

TC8518 Rev 2.2 User Manual 1-11

Chapter 1 Introduction TC8518 Product Description

Physical/Electrical

Dimensions 19 x 1.75 x 11 in / 48.26 x 4.43 x 27.94 cm

(W x H x D)
Mounting Standalone, 19 or 23 inch rack mount
Power Source (AC) 90 to 260 VAC, 50/ 60 Hz
Power Source (DC) 24VDC

48VDC

125VDC
Power Protection Standard Redundancy
Power Consumption < 20 W
Temperature Range -10°C to 50°C (Standard); -20°C to 70°C

igh Temp); -40°C to 80°C (Extreme

(H

Temp);

Diagnostic Tests

Optical Fiber Local and Remote Loopbacks
T1/E1 Lines Local and Remote Loopbacks

Compliance Items

EMI/EMC EN55022
ANSI.403-1999, ANSI T1.408, AT&T TR
ITU G.703, G.704, G.706, G.736, G.77
ETSI ETS 300 166, JTG.703, JTI.431, TBR12, TBR13, CTR4
CSA 60950
FCC PART 15 CLASS A
NEMA TS-2
CALTRANS TEES

62411

5, G.823, I.431, O.151, O.161

1.3.6 Pin Assignments, Configurations and Default Settings

Pin definition and connections are listed below. Console port can be connected via
RS232 interface to a PC using HyperTerminal configured for VT100 or any VT100
terminal emulator.

1-12 TC8518 Rev 2.2 User Manual

Chapter 1 Introduction TC8518 Product Description

Pin Assignments

Console RJ-45 Port Pin Assignment Ethernet RJ-45 Port Pin Assignment

Pin Number Signal Pin Number Signal
3 Transmit Data 1 TPTX+
4 Signal Ground 2 TPTX+
5 Signal Ground 3 TPRX+
6 Receive Data 4 TPRX+

5 Chassis GND
6 Chassis GND

Alarm Relay Connector

Pin Number Signal Description
3 Alarm Fuse Normal Close (left)
4 Alarm Fuse Common (middle)
5 Alarm Fuse Normal Open (right)

DC Power Connector

Pin Number Signal Description
1 (Left) +V +DC Return
2 (Right) -V -DC 24/28 V

T1/E1 RJ48 Line Connector

Pin Number Signal Signal Direction
1 Receive Ring Input to TC8518
2 Receive Tip Input to TC8518
4 Transmit Ring Output from TC8518
5 Transmit Tip Output from TC8518
7 Unassigned

TC8518 Rev 2.2 User Manual 1-13

Chapter 1 Introduction TC8518 Product Description

6 5 4 3 2 1

6 5 4 3

2 1

Signal Ground

RXD

TXD

Not Us
RTS
CTS

RS-232

Pin Assignment

RJ-11 Port

On TC3847-1

TC8518

T1/E1 RJ48 Line Connector

8 Unassigned

Console Port

Configuration Option Default
Baud Rate 9600 9600
Data Length 8-bits 8-bits
Stop Bits 1-bit 1-bit
Parity None None

RJ-11 600Ω Analog Port Pin Assignment

4 Wire

1 - N/A 1 - N/A
2 - Input 2 - N/A
3 - Output 3 - Input/Output
4 - Output 4 - Input/Output
5 - Input 5 - N/A
6 - N/A 6 - N/A

RS-232 Pin
Assignment

2 Wire RJ-11 Jack

(Pin Assignment)

1-14 TC8518 Rev 2.2 User Manual

6

5

4

3

2

1

Signal Ground

RXD+

TXD+

Not Used
RXD­TXD-

4-Wire RS-422/485

Pin Assignment

RJ-11 Port

On TC3847-1

TC8518

6 5

4 3

2 1

Signal Ground

RXD/TXD+

Not Used
RXD/TXD-

2-Wire RS-485

Pin Assignment

RJ-11 Port

On TC3847-1

Not Used

Not Used

TC8518

Chapter 1 Introduction TC8518 Product Description

4-Wire RS-422/485
Pin Assignment

2-Wire RS-485
Pin Assignment

1.3.7 Default Software Configuration

Network Management (WEB/SNMP/CLI/TELNET)

Configuration Option Default
IP Address 192.168.1.1
Subnet Mask 255.255.255.0
Gateway IP 0.0.0.0
Username admin
Password admin

TC8518 Rev 2.2 User Manual 1-15

User administrator

Chapter 1 Introduction TC8518 Product Description

SNMP

Configuration Option Default
Read-Only

Community N
Read-Write

Community N
Trusted Peer IP, Subnet Undefined
SNMP Traps Enable, Disable Disable

ame

ame

public

private

Optical

Configuration Option Default
Timing Mode Non-Looped,

oped

Lo

Statistics Refresh Rate 60 Seconds

Non-Looped

T1/E1

Configuration Option Default
Channels Enable, Disable Disable
Line Code AMI, B8ZS, HDB3
Line Termination 100 Ohm
Line Build-Out 1 to 655 ft
Local Loopback Enable, Disable Disable
Remote Loopback Enable, Disable Disable

Ethernet

Configuration Option Default
Ports Enable, Disable Enable
Speed/Duplex 10/100Mbps, Full/Half/Auto Auto-negotiation
Flow Control Enable, Disable Disable

1-16 TC8518 Rev 2.2 User Manual

Chapter 1 Introduction TC8518 Product Description

1.3.8 Default Unit Alarm Settings

When the TC8518 reports an alarm condition, such as loss of synchronization, the
alarm will cause the ALM LED on the front panel to flash RED . Each alarm can be
individually enabled or disabled. The alarm types are listed in the table below.

Alarm Type

Alarm Option Default
System Loss of Power

Unit Temp >90C
Alarm Cut Off
Dry Contact Relay
Loopback

Optical LOS

RXBER
RDI
OPT-A LOS
OPT-B LOS

T1/E1 AIS

LOS
BPV
TOCD
TCLE

Disable, Enable
Disable, Enable
Disable, Enable
Disable, Enable
Disable, Enable

Disable, Enable
Disable, Enable
Disable, Enable
Disable, Enable
Disable, Enable

Disable, Enable
Disable, Enable
Disable, Enable
Disable, Enable
Disable, Enable

Disable
Disable
Disable
Disable
Enable

Enable
Disable
Disable
Disable
Disable

Enable
Enable
Enable
Disable
Disable

1.3.9 Optical Redundancy

Figure 3 below, illustrates the function of optical redundancy. Optical redundancy is
used to prevent the loss of data transmission in the event that an optic cable or
transceiver is malfunctioning. Should this occur, the secondary optic link & receiver
"B" is enabled automatically, thereby preserving the integrity of the communication.
In the meantime, the "Alarm" LED will flash and the buzzer will sound to indicate
an optic alarm (depending on Optic alarm settings).

With optical redundancy, the optic transmitter "TxA" and "TxB" both transmit the
same signal to the remote unit. It is up to the remote unit to decide whether "RxA"
or "RxB" should be used as the valid incoming optical signal. By default, "RxA" is
the primary receiver; "RxB" is the standby backup.

TC8518 Rev 2.2 User Manual 1-17

Chapter 1 Introduction TC8518 Product Description

Figure 1-4 Redundant Optics Logic Diagram

1-18 TC8518 Rev 2.2 User Manual

Chapter 1 Introduction TC8518 Product Description

1.3.10 Environmental & EMI Compliance

TC8518 Rev 2.2 User Manual 1-19

Chapter 1 Introduction TC8518 Product Description

1.3.11 Physical Dimensions

1-20 TC8518 Rev 2.2 User Manual

Chapter 2 Installation

2.1 General Information

The installation section describes how to:

• Unpack the unit

• Ensure an optimum site location

• Install the power supply and dry contact connection

2.2 Unpacking

Before unpacking any equipment:

• Inspect all shipping containers for evidence of external damage caused during
transportation.

• Inspect for damage after it is removed from the containers.

IMPORTANT

Any claims concerning shipping damage should be made directly to
the pertinent shipping agencies. Any discrepancies should be
reported immediately to the Customer Service Department at TC
Communications, Inc. at [phone].

2.3 Environmental Requirements

The TC8518 should be located in an area that provides adequate light, work space,
and ventilation. You should choose the correct temperature option that encompasses
your environmental conditions. See Environment, on page 1-8.

2.3.1 Equipment Location

Clearance allowances should be given to route the cable to prevent damage to the
connectors and allow for easy installation and upgrades.

2.3.1.1 Site Selection Criteria

The following is a site criteria guideline to help you select a proper installation site
for the TC8518.

• Room for adequate ventilation and cable routing

Important

TC8518 Rev 2.2 User Manual 2-1

Avoid locating it next to any equipment that may produce electrical
interference or strong magnetic fields, such as elevator shafts or
heavy duty power supplies.

Chapter 2 Installation Mechanical Installation

Power Supply A (A/C)

2.4 Mechanical Installation

The TC8518 can either be stand-alone or rack-mounted.

2.4.1 19-Inch Rack Mounting

All TC8518s can be mounted on standard 19-inch racks.

Table 2-1: 19-Inch Configurations

TC8518 mounted to 19­inch rack

2.4.2 Power Supplies

The TC8518 offers several different power input options (12 VDC, 24 VDC, -48
VDC, 110V/220V). Each configuration allows for two power supplies to share the
load. The unit can still operate with one power input (either A or B).

Important

Table 2-2: Power Supplies

TC8518 Power Supply (A/C)

Read and only connect a supply voltage that corresponds to the
type plate of your device. Make sure that the contact load capacity
of the signal contact is not exceeded.

2-2 TC8518 Rev 2.2 User Manual

Chapter 2 Installation Mechanical Installation

On

Off

Normal Close

COM

Normal Open

Determine if the front panel of PWR A and PWR B LED is green or ON.

If Then

The LED is green on both power
A and B.

The front LED is OFF. This indicates a problem with the power source, the

Proceed.

power supply or the connector. Please see Power
Supplies, on pa

ge 2-2.

2.4.2.1 Dry Contact Alarm Relay (DCAR)

A terminal block on the TC8518 provides for the dry contact relay alarm. This relay
may be used in conjunction with an external device to monitor the condition of the
TC8518. The rack mounted DCAR is located at the bottom of the TC8518.

Normally in the OPEN position, any alarm condition will trigger the switch to the
CLOSED position.

Figure 2-1 TC8518 Dry Contact Alarm Relay

TC8518 Rev 2.2 User Manual 2-3

Chapter 2 Installation Unit Power

DCAR Specifications

Max Load Voltage 125 VAC, 60VDC
Continuous Load Current 1A
Peak Load Current 2A
Power Rating AC: 62.5VA

DC: 30W

NOTE Use only uni-directional transmissions.

NOTICE

A dry contact is a set of two switch contacts, like a set of contacts from a
relay or from a toggle switch, etc., that has both terminals available and
neither contact is connected to power. (Dry = no power) The contacts may be
NO, normally open (also called form A), or NC, normally closed (also called
form B). Form C would be a SPDT (single pole double throw) with 3
connections. You can connect the contact to any type of monitoring device
you want, regardless of whether the device is already connected to power or
any other circuit.

2.5 Unit Power

2.5.1 Powering on the TC8518

After powering up the TC8518, there will be a thirty second internal circuit testing.
See SNMP Query, on page 5-1.

2.6 Cabling

There are three types of interface connectors used for the TC8518.

• The RJ-45(10/100 Base-T) Ports at the front of the TC8518 are accessed by
using RJ-45 Ethernet connections. Be careful when inserting this type of
conn

ector as it is the weak point in any Ethernet cable.

• The Console (CON) Port at the bottom of the chassis is accessed through RS­232 Serial interface. Users will need a straight-through DB9 cable to connect
the PC to the console port.

• T1/E1 ports on the TC8518 are accessed using T1 RJ-48 straight-through
(ex.Channel Bank) or cross-over (ex. Cisco Router).

2-4 TC8518 Rev 2.2 User Manual

Chapter 2 Installation Quick-Start Guide

• The phone ports (RJ-11) on the expansion card are accessed using 2-wire
phone cable.

Table 2-3: Cable Configurations

RJ-45 Ethernet Connection

RJ-45 to DB-9 (Included in
the Package)

RJ48-to-BNC Adapter (For
E1 Only) Optional

2.7 Quick-Start Guide

This section describes the basic TC8518 configuration and setup.
Power On:
When power is initially connected to the TC8518, the Power, Alarm, Optic LEDs

will light solid or flash for a few minutes, T1/E1 channel LEDs will light in a
rotating pattern, and the alarm buzzer will sound. Once the unit finishes booting up,
the buzzer will stop and the T1/E1 LEDs will stop rotating.

2.7.1 Installation Procedure Summary

The TC8518 is designed for quick and easy installation.

1. Prepare a PC to have the following settings: set the IP address to be in the

192.168.1.x range, for example, 192.168.1.50. The subnet mask should be

255.255.255.0. Using a CAT-5 cable, connect the PC to a TC8518 Ethernet port;

with a web browser, enter http://192.168.1.1/; login with username "admin" and
password "admin".

TC8518 Rev 2.2 User Manual 2-5

Chapter 2 Installation Quick-Start Guide

2. Set the Basic Settings to label and describe the TC8518. Please refer to Figure 3-

5, Web Application - Basic Settings.

3. Set up the new IP address for the TC8518. This page can be accessed from the

"IP Settings" link. Please refer to Web Application - IP Settings in Chapter 3, on
page 3-9.

Note: After the IP has been applied, you will need to enter this new IP address in
your web browser.

4. Setup the T1/E1 channels. This can be accessed from the "T1/E1 Options:

Settings". Enable the channels to be used and edit each channel to the application's
settings. If multiple channels share the same configuration, it is possible to use the
"Copy Channel Settings". See Web Application - T1/E1 Options: Settings in
Chapter 3, on page 3-24.

5. Repeat the steps for the second TC8518 unit. Using the PC, ping both TC8518s to

verify a connection.

6. Connect fiber optic cables between the local & remote units. The local unit's TxA

connects to the remote unit's RxA, and the local unit's RxA connects to the remote
unit's TxA. The local TxB connects to the remote RxB, and the local unit's RxB
connects to the remote unit's TxB. Observe that the "SYNC", "OPT-A", and
"OPTB" LEDs lights solid when a good optic connection is present. With a PC
connected to only one TC8518, ping both units to verify a connection.

7. Conduct a Local Optical Loopback, and Remote Optical Loopback Test on each

unit (refer to Pages 7-76 through 7-81)

8. For Ethernet (10/100Base-T) signals, connect the Category 5 cable to one of the

RJ-45 switch ports on the front panel of the TC8518. Observe that the 100M, FULL/
COL, and LINK/ACT LEDs are on solid. If the Ethernet signal is 10Base-T and half
duplex, the 100M and FULL LEDs should be off. If the Ethernet signal is 100Mbps
and full duplex, the 100M and FULL LEDs should be lit.

Category 5 Cable Notes:
The TC8518 Ethernet ports are auto-sensing and auto-negotiating. This allows the

use of either a straight through CAT5 cable or a cross-over CAT5 cable. This also
means the TC8518 can detect the speed of the Ethernet connection without having
to configure it.

2-6 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web

3.1 Introduction

TC Communications’ web management application is integrated on your TC8518.
This user friendly interface may be accessed through the Ethernet ports on the
TC8518. The web management may also be accessed remotely over the network if
the TC8518 has been integrated to your network.

3.2 Setup

Connecting to the web interface, is as simple as typing the IP address assigned to the
TC8518 into your web browser address field. Setup, diagnostics, and management
are accessed via Web, SNMP, Serial Console, and Telnet. To connect your PC to
the TC8518 and access these pages, see below.

To connect a PC

1. Using a CAT-5e or a CAT-6 cable, connect the PC to a TC8518 Ethernet port.

2. Power up the PC and access your Internet Browser.

3. Access the PC web browser and enter: https://192.168.1.1/.

NOTE The default IP address for TC8518 is 192.168.1.1. If there are

multiple TC8518s in the network, make sure you change the IP
address in order to prevent an IP conflict.

4. Login with default username “admin” and password “admin” or use the
password and username assigned to you by the administrator.

The Home page appears.

TC8518 Rev 2.2 User Manual 3-1

Chapter 3 Management through the Web Home Page

3.3 Home Page

The Home Page displays an overall view of the TC8518. Please refer to Figure 3-2,
Web Application - Home: Physical Status.

Unit Uptime: Displays the time duration the TC8518 has been powered on. It
separates the time into days, hours, minutes, and seconds.

T1/E1 Error Status: Displays if there is an alarm signal from T1/E1 channels. A
green icon indicates there is no alarm present, and a red icon indicates an error is
present. "---" indicates the channel is disabled.

Optical Error Status: Displays if there is an alarm signal from the optical ports. A
green icon indicates there is no alarm present, and a red icon indicates an error is
present. An Optical A LOS and Optical B LOS represent respective optical ports.
Optical Error monitors all possible optical faults. Please refer to Figure 3-4, Web
Application - Home: Unit Alarm - Criteria.

Port/Channel Error Status: Displays the configurations of the Ethernet ports and
T1/E1 channels. Ethernet port statuses display the settings, connection speed, and
duplex. T1/E1 channel statuses display the settings. Please refer to Section 4.8.Pages
4-51 and 4-53.

Figure 3-1 Web Application - Home Page

3-2 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Home Page

3.3.1 Home: Physical Status

The Physical Status page displays the internal temperature of the TC8518 and the
power supply statuses. Please refer to Figure 3-2, Web Application - Home: Physical
Status.

Unit Temperature: The internal temperature of the TC8518 is regularly measured
and displayed to provide the Network Administrator with the most current
temperature status. The temperature is displayed in both Celsius and Fahrenheit
scales.

Unit Power Status: Displays the most current statuses of the redundant power
supplies, Power A and Power B. Plug-in Status displays one of three statuses:
Installed and Supplying Power, Installed and Not Supplying Power, or Not Installed.
The power type is also displayed, AC or DC.

Installed; Supplying Power: The power module is installed in the unit and it is
supplying power.

Installed; Not Supplying Power: The power module is installed in the unit, but it is
not supplying power.

Not Installed: The power module is not present or detected in the unit.

Figure 3-2 Web Application - Home: Physical Status

TC8518 Rev 2.2 User Manual 3-3

Chapter 3 Management through the Web Home Page

3.3.2 Home: Unit Alarm

The Unit Alarm page displays the alarm status of the entire TC8518 unit. Alarm
trigger criteria can be set on this page. Users must click on "Apply" for changes to
take effect.

Unit Alarm Status: Displays the TC8518 alarm condition.
Unit Alarm Settings:

Alarm Buzzer Enabled: Enables the TC8518 to have an audible alarm to sound
when a fault is detected.

Dry Contact Enabled: Allows an external device to signal the alarm condition.

Alarm Trigger Criteria: Click the 'Modify' button to configure the alarm triggers.
Please refer to Figure 3-4, Web Application - Home: Unit Alarm - Criteria.

Clear Alarm: Clears all alarm signals on the TC8518. If an existing alarm is still
present and the page is refreshed, the alarm condition will reappear.

Alarm Cut-Off (ACO): Clears all alarm signals on the TC8518. If an existing
alarm is still present and the page is refreshed, the alarm condition will still be off.
Only a new alarm that is triggered will change the Unit Alarm Status to on.

NOTE There is also a hardware ACO button located on the front of the

TC8518. It serves 2 functions:

1) If you press and release the ACO button, it will clear all
alarms until a new fault trigger is detected. Meaning, if an
alarm condition still exists, the alarm indicators will not
reflect as such.

2) If you press and hold the ACO button for 5 seconds, it
will clear all alarm conditions. However, if an alarm
condition still exists, then the alarm indicator will
immediately reflect it.

3-4 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Home Page

Figure 3-3 Web Application - Home: Unit Alarm

3.3.3 Home: Unit Alarm: Alarm Trigger Criteria

The Unit Alarm: Alarm Trigger Criteria page categorizes all possible alarm triggers
for T1/E1, Optical, Loopback, and Physical Status alarms. The desired alarm
triggers can be configured on this page. This page is accessible from the Unit Alarm
page. At the Alarm Trigger Criteria section, click on "Modify" to reach this page.
Please refer to Figure 3-3, Web Application - Home: Unit Alarm for default settings.

T1/E1 Triggers

AIS Alarm Indication Signal
LOS Loss Of T1/E1 Signal
BPV Bipolar Violation
TOCD Transmit Open-Circuit Detect

the LIU has detected an open circuit on the T1/E1
channel's transmit pair. This could be due to bad
connections at either end of the cable or a cable
break. It could also be due to a faulty receiver at the
far end.

. TOCD indicates that

TC8518 Rev 2.2 User Manual 3-5

Chapter 3 Management through the Web Home Page

T1/E1 Triggers

TCLE Transmit Current-Limit Exceeded. TCLE indicates

that there is a short on the T1/E1 channel's transmit
pair. Common sources of this problem is damaged
cables or a faulty receiver at the far end.

Optical Triggers

LOS Loss of Signal (Optical)
RXBER Receive Bit Error Rate Threshold Exceeded
RDI Remote Defect Indication
Optical A LOS Optical A Port LOS
Optical B LOS Optical B Port LOS

Loopback Triggers:

All Remote and Local (Ethernet, Optical, and T1/E1)

Physical Status Triggers:

Loss of Power (Power A or Power B)
Unit Temperature > 90 C

3-6 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Basic Settings

Figure 3-4 Web Application - Home: Unit Alarm - Criteria

3.4 Basic Settings

The Basic Settings page allows the Network Administrator to label and describe the
TC8518 in order to distinguish it fromother TC8518 units.

Name, Location, Contact, Description #1-#3

All of these fields can be entered with descriptions useful to the Network
Administrator. It is recommended that the Contact information should refer to the
Network Administrator.

TC8518 Rev 2.2 User Manual 3-7

Chapter 3 Management through the Web IP Settings

Figure 3-5 Web Application - Basic Settings

3.5 IP Settings

The IP Settings page displays the current IP and Network Settings and allows for IP
configurations.

3-8 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web IP Settings

Figure 3-6 Web Application - IP Settings

TC8518 Rev 2.2 User Manual 3-9

Chapter 3 Management through the Web Advanced

3.5.1 IP Address Aliases

IP Address Aliases feature allows the TC8518 to respond to different IP addresses.
It is recommended that the alias IP address to not be in the same subnet as the
Current IP Address. The TC8518 has a maximum of 16 IP Address Aliases.

Figure 3-7 Web Application - IP Address Alias

3.6 Advanced

The Advanced page gives the Network Administrator access to administrative
functions.

About TC8518: Ple
TC8518.

Configuration File: Please refer to Figure 3-10, Web Application - Advanced -
Configuration File, Figure 3-11, Web Application - Advanced - Load Configuration
File and Figure 3-12, Web Application - Advanced - Save Configuration File.

Date and Time: Please refer to Figure 3-13, Web Application - Advanced - Date
and Time.

Reboot: Please refer to Figure 3-14, Web Application - Advanced - Reboot.
Restore Defaults: Please refer to Figure 3-15, Web Application - Advanced -

Restore Defaults.

3-10 TC8518 Rev 2.2 User Manual

ase refer to Figure 3-9, Web Application - Advanced - About

Chapter 3 Management through the Web Advanced

TC8518 Firmware Upgrade: Please refer to Figure 3-16, Web Application -
Advanced - Firmware Upgrade and Figure 3-17, Web Application - Advanced ­Upgrade from a Network PC.

Figure 3-8 Web Application - Advanced Page

3.6.1 Advanced: About TC8518

The About TC8518 page displays technical information regarding the TC8518
hardware and software. Contact information for TC Communications is also
displayed.

TC8518 Rev 2.2 User Manual 3-11

Chapter 3 Management through the Web Advanced

Figure 3-9 Web Application - Advanced - About TC8518

3.6.2 Advanced: Configuration File

The Configuration File page allows the Network Administrator to save current
TC8518 settings or load previously saved TC8518 settings.

3-12 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Advanced

Figure 3-10 Web Application - Advanced - Configuration File

Load Configuration File: This page allows the user to choose the location of where
the configuration file is. Please refer to Figure 3-11, Web Application - Advanced -
Load Configuration File.

TC8518 Rev 2.2 User Manual 3-13

Chapter 3 Management through the Web Advanced

Figure 3-11 Web Application - Advanced - Load Configuration File

Save Configuration File: The Save Configuration File feature allows the current
TC8518 settings to be saved into a file. The file will be a *.conf file. Please refer to
Figure 3-12, Web Application - Advanced - Save Configuration File.

3-14 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Advanced

Figure 3-12 Web Application - Advanced - Save Configuration File

The Date and Time page displays all time related fields and configurations.
Localization: Displays the current date and time. The current Time Zone is

displayed and can be selected from the drop table. To manually configure the time,
click on "Clock Set" at the bottom of the page.

Daylight Saving Time: Enable

/Disable. Configurable if the Automatic Time

Update is disabled
Automatic Time Update: Enable/D

isable. Time Of Day (TOD) allows user to
manually set the time. Network Time Protocol (NTP) enables the clock to
synchronize with a time server. Users can define which time server to use as the
default Time Server.

Status: Displays the connection status with the chosen Time Server.

TC8518 Rev 2.2 User Manual 3-15

Chapter 3 Management through the Web Advanced

Figure 3-13 Web Application - Advanced - Date and Time

3-16 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Advanced

3.6.3 Advanced: Reboot

The Reboot page allows the user to reboot the unit.

Figure 3-14 Web Application - Advanced - Reboot

TC8518 Rev 2.2 User Manual 3-17

Chapter 3 Management through the Web Advanced

3.6.4 Advanced: Restore Defaults

The Restore Default page allows the user to reset all settings to his or her original
default settings.

Figure 3-15 Web Application - Advanced - Restore Defaults

3-18 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Advanced

3.6.5 Advanced: Firmware Upgrade

The Firmware Upgrade page allows the user to upgrade the firmware of the
TC8518.

Figure 3-16 Web Application - Advanced - Firmware Upgrade

3.6.6 Advanced: Upgrade From a Computer on the Network

The Upgrade page allows the user to choose the file to use as the upgrade.

TC8518 Rev 2.2 User Manual 3-19

Chapter 3 Management through the Web Simple Network Management Protocol (SNMP) Settings

Figure 3-17 Web Application - Advanced - Upgrade from a Network PC

3.7 Simple Network Management Protocol (SNMP) Settings

The SNMP page allows the user to enable/disable SNMP management and
configure settings. Please refer to Figure 3-18, Web Application - Simple Network
Management Protocol (SNMP) Page.

Read-Only Community Name: Displays the current Read-Only Community
Name. It can be user-defined. A SNMP management software with the Read-Only
Community Name is granted authorization to view TC8518 values.

Read-Write Community Name: Displays the current Read-Write Community
Name. It can be user-defined. Any SNMP management software with the Read­Write Community Name is granted authorization to read and configure any TC8518
values.

Trusted Peer: The user can define a specific IP address or a subnet of IP addresses
that are authorized to use a SNMP management software to manage the TC8518.

SNMP Traps: Enable/Disable SNMP to send traps to a SNMP management
software when an error is triggered.

3-20 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Login Settings

Figure 3-18 Web Application - Simple Network Management Protocol
(SNMP) Page

3.8 Login Settings

The Login Settings page allows the user to define security access for the TC8518.
Users: Displays the list of u

removed and usernames and passwords can be defined.

sers with access to the TC8518. Users can be added or

TC8518 Rev 2.2 User Manual 3-21

Chapter 3 Management through the Web Login Settings

Groups: A tool to assist users in organizing multiple TC8518 users.

Figure 3-19 Web Application - Login Settings Page

3-22 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web T1/E1 Options

3.9 T1/E1 Options

3.9.1 T1/E1 Options: Status

The T1/E1 Status page displays the channel alarm status and signal strength of
enabled T1/E1 channels. Channels that appear gray are disabled channels.

Figure 3-20 Web Application - T1/E1 Options: Status Page

3.9.2 T1/E1 Options: Settings

The T1/E1 Settings page displays the T1/E1 channel alarm status and summary.
Please refer to Figure 3-21, Web Application - T1/E1 Options: Settings.

T1/E1 Alarm Status: Displays if a T1/E1 channel alarm signal has been triggered.
Clear Alarm on All Channels: Allows users to clear all alarms on T1/E1 channels.
T1/E1 Alarm Settings Summary: Displays the summary of alarm trigger settings

for T1/E1 Channels
T1/E1 Settings Summary: Each channel can be edited. A useful feature for users is

the ability to edit one channel and then copy the same settings onto other channels.

TC8518 Rev 2.2 User Manual 3-23

Chapter 3 Management through the Web T1/E1 Op tions

For example, Channel 1 is configured to have Mode T1 and Build-Out to 0-133ft. If
the user would like other channels to share this configuration, the user can select
multiple channels by clicking on the checkbox for each channel, choose "Copy
Channel Settings From" to be Ch 1, and click on Copy". This feature allows for
simple and quick changes to multiple channels.

Figure 3-21 Web Application - T1/E1 Options: Settings

3.9.3 T1/E1 Options: Statistics

The T1/E1 Statistics page displays all T1/E1 channels' statistics and alarm status
history.

Save Rate: User
history.

Refresh Rate: The interval at which the T1/E1 statistics are updated. Range of 30­600 seconds.

3-24 TC8518 Rev 2.2 User Manual

-defined time interval at which the T1/E1 statistics are saved into a

Chapter 3 Management through the Web T1/E1 Options

Clear Summaries on All Channels: Reset all error counters to zero. Each channel
has its own respective history that can be accessed by clicking on the icon under
"Action".

Figure 3-22 Web Application - T1/E1 Options: Statistics

3.9.4 T1/E1 Options: Statistics Error Seconds Total

The T1/E1 Statistics Error Seconds Total displays the time duration of each error for
each T1/E1 channel.

Refresh Rate: User­refreshed.

Clear Totals on All Channels: Clear the accumulated errors back to zero.

TC8518 Rev 2.2 User Manual 3-25

defined time interval at which the T1/E1 Error Seconds Total is

Chapter 3 Management through the Web T1/E1 Op tions

Figure 3-23 Web Application - T1/E1 Options: Statistics Error Seconds
Total

3.9.5 T1/E1 Options: Statistics History

The T1/E1 Statistics History page displays the errors that occurred within defined
time intervals for an individual channel.

View: Displays previous rows of statistics history entries from the past.

3-26 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web T1/E1 Options

Figure 3-24 Web Application - T1/E1 Options: Statistics History

3.9.6 T1/E1 Options: Diagnostics

This page displays the diagnostic options related to the T1/E1 channels.
Loop Code Monitor: Selects which signal will be monitored for CSU Loop Up /

Down codes. See section 6.8.
Local Loopback: When enabled, the T1/E1 signal coming in to the RJ48 port will

be looped back out. See section 6.6.
Remote Loopback: When enabled, the T1/E1 signal coming in from the remote

unit, over the OC/3 signal, will be looped back to the remote unit. See section 6.6.

TC8518 Rev 2.2 User Manual 3-27

Chapter 3 Management through the Web Optical Options

Figure 3-25 Web Application - T1/E1 Options: Diagnostics

3.10 Optical Options

3.10.1 Optical Options: Optical Status

The TC8518's Optical Status displays the current status of alarms in regards to
optics. "Current" and "Since Last Cleared" indicate to the Network Administrator if
there has been an error since the last time the TC8518 was cleared of alarms.

Current: Displays the current status of optical alarms.
Since Last Cleared: Displays if an optical alarm has been triggered since the last

time the "Clear Alarm" button was clicked.
For example, two TC8518s are connected properly and the Optical Status page

appears similar to Figure 3-26, Web Application - Optical Options: Status. Then
suppose Optical A suffers a Loss of Signal (Opt A LOS), but then is corrected after
five minutes. Current will have displayed red only during that five minutes and
then return to green. Since Last Cleared will display "Error" and remain doing so.
This allows the network administrator to know if an error had occurred on the
optical ports recen

tly.

3-28 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Optical Options

Figure 3-26 Web Application - Optical Options: Status

3.10.2 Optical Options: Optical Settings

The TC8518's Optical Options displays the Optics Type, the Timing Mode, and
Remote Optical Loopback time.

Optics Type: Displays the type of fiber optic signal wavelength and mode.
Timing Mode:

clocked according to the local machine. Looped indicates the signal will be
transmitted with the same timing as the signal that was received.

Remote Optical Loopback: Enables the local TC8518 to loopback any signal it
receives through the optics. Time increments is in minutes.

Note: This feature is for advanced users only. Enabling this can have serious
consequences on your network. It is intended for users with Ethernet testers.

Non-Looped means the TC8518 optics will transmit the signal

TC8518 Rev 2.2 User Manual 3-29

Chapter 3 Management through the Web Optical Options

Figure 3-27 Web Application - Optical Options: Settings

3.10.3 Optical Options: Statistics

The TC8518's Optical Statistics displays a summary of error types on the optics.
Refresh Rate: The interval at which the optical statistics are updated. Range of 30

to 600 seconds.

Clear All Statistics: Icon under Action column resets a
Clear Statistic Counter: Clears individual error types.

ll error counters to zero.

3-30 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Ethernet Options

Figure 3-28 Web Application - Optical Options: Statistics

3.11 Ethernet Options

3.11.1 Ethernet Options: Port Settings

The TC8518's Ethernet Port Settings displays each Ethernet port's status and allows
the configuration of port settings. Please refer to Figure 3-29, Web Application -
Ethernet Options: Port Settings.

Port In Use: Enable or disable the Ethernet port. Default setting is Enabled.
Speed/Duplex: Choose either 100Mbps Full, 10Mbps Full, 100Mbps Half, 10Mbps

Half. Default setting is Auto-Negotiate.

Flow Control: Enable or disable Flow Control; Default is disabled.
Eth # Label: Label the port with desired name to distinguish from other ports, up to

30 characters.

Huge Frame Support: Enable support for Ethernet frames up to 1916 bytes.
Timed Local Loopback: Enable local loopback on an Ethernet port. Range of 1-

1440 minutes.
Note: This feature is for advanced users only. Enabling this can have serious

consequences on your network. It is intended for users with Ethernet testers.

TC8518 Rev 2.2 User Manual 3-31

Chapter 3 Management through the Web Ethernet Options

Figure 3-29 Web Application - Ethernet Options: Port Settings

3.11.2 Ethernet Options: Rate Limit

The TC8518's Ethernet Rate Limit feature allows the Network Administrator to
regulate the bandwidth of each of the 3 Ethernet ports.

Transmitting and Receiving are separated to allow for extreme flexibility. The port
rate limits can be set in increments of 32Kbps. If the Network Administrator enters a
value that is not a multiple of 32, the TC8518 will automatically round to the nearest
multiple of 32. For example, if you enter a limit of 100Kbps, then the TC8518 will
automatically convert the 100Kbps into 128Kbps.

If you do not want any rate limit imposed on a port, enter '0' for that port's "Norm.
Tx Limit" or "Normal Rx Limit" and click "Apply".

3-32 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Ethernet Options

Figure 3-30 Web Application - Ethernet Options: Rate Limit

3.11.3 Ethernet Options: Port Statistics

The Ethernet Port Statistics offers a comprehensive overview of the Ethernet traffic
passing through the TC8518. It allows for a history of statistics that can be saved in
regular intervals. The Network Administrator can define the save rate in increments
of minutes.

Note: Setting the Save Rate to less than 5 minutes will damage the flash memory.
The Statistics Summary also separates the traffic into transmit (Tx) and receive (Rx)

for each of the 3 Ethernet ports. The key Ethernet statistics that are monitored are
Frames per Second (FPS), Bytes per Second (BPS), and Bandwidth Usage
Percentage (BU%).

Statistics of Ethernet ports #1, #2, and #3 are independently monitored and
recorded, and a Po
icons at the right of the Statistics Summary under the View column.

rt History and Event Statistics can be accessed by the respective

TC8518 Rev 2.2 User Manual 3-33

Chapter 3 Management through the Web Ethernet Options

Figure 3-31 Web Application - Ethernet Options: Port Statistics

3.11.4 Ethernet Options: Port Statistics: Port History

The TC8518 Port History offers a comprehensive list of the statistics of a specific
port shown on the Ethernet Options: Port Statistics page. It is updated with an entry
for each Save Rate increment on the Ethernet Options: Port Statistics link.

Note: Setting the Save Rate to less than 5 minutes will damage the flash memory.

3-34 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Ethernet Options

Figure 3-32 Web Application - Ethernet Options: Port Statistics: Port
History

3.11.5 Ethernet Options: Port Statistics: Event Statistics

The TC8518 Event Statistics offers a comprehensive list of the event statistics of a
particular port since the unit was powered on. It displays totals of Ethernet events
that the TC8518 experiences.

At the bottom of the page there is a 'Clear Event' button that allows the Network
Administrator to clear the events and start at zero. This allows for statistics
beginning at the Network Administrator's desired time.

The "Refresh" button allows the Network Administrator to view the most current
event statistics

available.

TC8518 Rev 2.2 User Manual 3-35

Chapter 3 Management through the Web Ethernet Options

Figure 3-33 Web Application - Ethernet Options: Port Statistics: Event
Statistics

3.11.6 Ethernet Options: Ethernet over Fiber

Ethernet over Fiber allows the user to temporarily enable Remote Ethernet
Loopback without interrupting the T1/E1 signals. It is a feature to troubleshoot the
TC8518's Ethernet function without interrupting the operation of the T1/E1
channels.

The Framing Mode is Generic Framing Procedure (GFP). The Ethernet over Fiber
feature can be enabled in increments of minutes.

Note: This feature is for advanced users only. Enabling this can have serious
consequences on your network. It is intended for users with Ethernet testers.

3-36 TC8518 Rev 2.2 User Manual

Chapter 3 Management through the Web Ethernet Options

Figure 3-34 Web Application - Ethernet Options: Ethernet over Fiber
Settings

TC8518 Rev 2.2 User Manual 3-37

Chapter 3 Management through the Web Logout

3.12 Logout

The Logout link on the left column will exit the user from the TC8518 Web
Management. It will return the user to the Login page.

Figure 3-35 Web Application - Logout

3-38 TC8518 Rev 2.2 User Manual

Chapter 4 Command Line Interface

4.1 Introduction

Command Line Interface (CLI) is a text only interface integrated on-board the
TC8518. This reference chapter defines commands, describes the parameter options,
and shows examples you can choose using this tool. There are a few simple steps for
using CLI.

A. Type a command. The system will continue to wait for you to finish entering

the text command until you press the Enter key.

B. A command-line interpreter then receives, analyzes, and executes the requested

command.

C. After the command is executed, the command usually returns output to you in

the form of text lines on the CLI. This output may be an answer if the
command was a question, or otherwise a summary of the operation.

4.2 Setup

Accessing TC Command with your PC is as simple as connecting a cable from your
PC to the TC8518 and booting up the software.

To connect a PC

1. Using a RJ45 to DB9 Cable cable, connect the PC to a TC8518 Console port

(CON).

2. From the Start icon, access Accessories/Communications/Hyper terminal.

The New Connection - Hyper Terminal page appears.

TC8518 Rev 2.2 User Manual 4-1

Chapter 4 Command Line Interface Setup

3. Select the corresponding COM number from the pull-down menu and click on

OK.

If you do not know your COM number, you can find out by going to: Control
Panel/System. Under the Hardware tab, click “Device Manager”, and a new
window will open. Look for “Ports (COM & LPT)”, and you should see the
COM number you are currently using.

4. Create a new file with these settings.

4-2 TC8518 Rev 2.2 User Manual

• Configuration - 9600

• Data bits - 8

• Parity - None

• Stop bits - 1

• Flow Control - None

Chapter 4 Command Line Interface Console/Telnet Management

5. Click “Apply”

4.3 Console/Telnet Management

The console management can be accessed through the RS-232 port on the front
panel (RJ-45 connector) using a PC and terminal software (Hyper Terminal).

Attention: If you are unsure about the settings, contact your network administrator.
Improper settings may result in disruption of the existing network.

Once you connect to the TC8518, you will be prompted to enter a username and
password. Both the username and password are "admin".

There are a couple of key functions that are essential to be familiar with.
help: At any given point, this will assist the user with instructions on how to use

functions.
tab key: This will help fill out a partially entered function. For example, if the user

typed only "he" and then pressed the tab key, the console will automatically
complete the word (i.e.

"help").

exit: This allows the user to leave the directory he or she is presently in.

TC8518 Rev 2.2 User Manual 4-3

Chapter 4 Command Line Interface Console/Telnet Management

Figure 4-1 Terminal Settings: Console Home

4.3.1 IP Settings

The IP Settings allows the user to view (get) or to configure (set) IP settings.

Figure 4-2 Terminal Settings: Console IP Settings

4.3.2 Login Settings

The Login Settings allows the user to view or configure login details such as
username, passwords, etc.

4-4 TC8518 Rev 2.2 User Manual

Chapter 4 Command Line Interface Console/Telnet Management

Figure 4-3 Terminal Settings: Console Login Settings

4.3.3 Advanced Settings

The Advanced Settings allows the user to enable Load Configuration, Reboot, and
Restore to Default.

Figure 4-4 Terminal Settings: Console Login Settings

4.3.4 Firmware Update

The Firmware Update allows the user to update the firmware of the TC8518.

TC8518 Rev 2.2 User Manual 4-5

Chapter 4 Command Line Interface Console/Telnet Management

Figure 4-5 Terminal Settings: Console Firmware Update

4.3.5 Serial Port Setting (Apply to Serial Expansion Card)

CLI Commands Functions

serial settings_get Shows serial ports current settings.
serail status_get Shows serial ports current status.
serial enable_set Enables/Disables serial ports.
serial mode_set Sets mode to RS422/RS48

(Only used in RS422/RS485-2wire/RS485-4wire)
serial local_loopback_set Enables/Disables local loo
serial remote_loopback_set Enables/Disables remote loopb
serial baud_rate_set Allow user to set a baud rate from 1200 to 115200 baud.

5-2wire/RS485-4wire

pback on serial ports.

ack on serial ports.

Figure 4-6 Terminal Settings: Serial Get Settings

4-6 TC8518 Rev 2.2 User Manual

Chapter 4 Command Line Interface Console/Telnet Management

Figure 4-7 Terminal Settings: Serial Get Status

4.3.6 Phone Port Settings (Applies to Phone expansion card)

1. FXO Expansion:

CLI Commands Functions

fxo port_status Shows phone lines status and caller ID settings.
fxo caller_id_enable Enables/Disables caller ID featur

e in FXO-to-FXS mode.

Figure 4-8 Terminal Settings: FXO Port Status

2. FXS Expansion:

CLI Commands Functions

fxs port_status Shows phone lines status and caller ID settings

TC8518 Rev 2.2 User Manual 4-7

Chapter 4 Command Line Interface Console/Telnet Management

CLI Commands Functions

fxs caller_id_enable Enables/Disables caller ID feature in FXO-to-FXS mode.

Figure 4-9 Terminal Settings: FXS Port Status

4-8 TC8518 Rev 2.2 User Manual

Chapter 5 SNMP Management

5.1 Introduction

The TC8518 comes standard with built-in SNMP Agent. Contact TC
Communications Technical Support to get a copy of the MIB file. The TC
Communications MIB file can be run on any 3rd party SNMP Management
Software. Trap IP must be defined by the user and the MIB file compiled by SNMP
Manager software prior to the trap operation.

5.2 SNMP Query

Figure 5-1, SNMP Query Response shows an example of a SNMP management
station. This figure illustrates a SNMP Query of a TC8518. In this illustration, the
Query shows that all T1 alarm statuses are off.

Figure 5-1 SNMP Query Response

5.3 SNMP Third Party Management Software

Figure 5-2, Third Party SNMP Manager shows an example of the TC8518 SNMP
being managed with a third party vendor software.

TC8518 Rev 2.2 User Manual 5-1

Chapter 5 SNMP Management SNMP Trap Management

Figure 5-2 Third Party SNMP Manager

5.4 SNMP Trap Management

Figure 5-3, SNMP Trap Display shows two examples of Alarm Traps sent from the
TC8518 to the SNMP Manager Software on the administrator’s desktop.

Figure 5-3 SNMP Trap Display

5-2 TC8518 Rev 2.2 User Manual

Chapter 6 Troubleshooting

T1/E1 Port 1-16

Speed

Duplex/Collison

Ethernet Port 1,2,3

Link/Activity

6.1 Introduction

Alarm conditions occur whenever an optical or electrical problem (fault conditions)
is detected by the TC8518. Under normal operation, all LEDs for the T1/E1 ports
with a valid signal present should be lit (solid green). All T1/E1 Ports with no
electrical signal present, should be Off.

Figure 6-1 TC8518 T1/E1 Port Status

The Ethernet LINK/ACT LED is solid green when a port is connected and link
signal is present (the signal will flash when activity is present). The FULL/COL
LED will be lit depending on the incoming signal. (If the Ethernet signal is 10/
100Mbps and full duplex, the FULL/COL and 100M LEDs should be lit). If the
Ethernet connection is not 100Mbps or if it is half duplex, then both FULL/COL and
100M LEDs will be off.

Figure 6-2 TC8518 Ethernet Port Status

The Optical A and B (If unit is equipped with Optical Redundancy) LEDs should
be lit (Solid Green). The MGMT Port LEDs, The 100M LED will be lit if the signal
is 100Mbps or off if the signal is 10Mbps.

TC8518 Rev 2.2 User Manual 6-1

Optical A

Optical B

Loop Back Test

Sync with Remote Unit

Chapter 6 Troubleshooting All LEDs are "OFF"

Alarm LED

Alarm Cut-Off Button

Figure 6-3 TC8518 Optical Port Status

6.2 All LEDs are "OFF"

If no LEDs are lit on the unit, check the power supply, connector plug, and/or the
power source. If the problem persists, contact the Technical Support Department at
TC Communications, Inc.

Warranty Breach Warning Note:

Do not, for any reason, open the TC8518 unit. If you suspect of any problems with
the unit, contact the Technical Support Department at TC Communications, Inc. for
assistance. If the unit is opened without prior authorization from TC
Communications, it will result in the loss of warranty.

6.3 "Alarm Condition" - ALARM LED on the front panel

When an alarm condition is detected, the "ALARM" LED will flash red, and the dry
contact relay will close or open depending on which contact you use. By default, the
following fault conditions will cause the alarm to be triggered:

1. Optic signal lost from "RxA" (or "RxB" on dual optic models).

2. Optic signal is marginal, which causes invalid data packets to be received; the

"Rx-A" (or "Rx-B") LED will be flashing.

3. The remote unit lost power.

Figure 6-4 TC8518 Alarm Status

6-2 TC8518 Rev 2.2 User Manual

Chapter 6 Troubleshooting Optic Cable Types

6.4 Optic Cable Types

Conventionally, fiber optic cable with yellow-colored insulation is used for Single
Mode applications; gray or orange-colored insulated cable is for Multimode use. If
Multimode cable is used in a Single Mode application, the test results could be
erroneous and confusing.

6.5 Calculating the loss on the Fiber

The fiber optic link and/or connectors are frequently the source of various problems.
Check out the connectors and the integrity of the link first. Ideally, the link should
be calibrated for total loss after the installation has been completed. This will
accomplish two things: (1) it will verify that the total loss of the link is within the
loss budget of the device and (2) it will provide a benchmark for future testing. For
example, a system that has been tested as having 6dB total loss when installed and
suddenly tests out as having a loss of 10dB probably has a connector or link
problem.

Figure 6-5 Reference for Calculating Fiber Loss

6.6 Loopback Tests

Loopback tests assist troubleshooting by helping in pinpointing the source of error.
The TC8518 is a sophisticated product designed with multiple advanced
technologies. Loopback tests have been implemented to test independent
components of it.

TC8518 Rev 2.2 User Manual 6-3

Chapter 6 Troubleshooting Loopback Tests

Figure 6-6 Loopback Unit Diagram

6.6.1 T1/E1 Local Loopback Test

Local loopback is used to test wiring and the T1/E1 transceiver functionality. It can
be enabled and disabled by sending a CSU Loop-up (10000) or Loop-down (100)
pattern from the T1/E1 electrical side.

6.6.2 Optical Local Loopback Test

Optical local loopback tests if the optical transceivers on the local TC8518 are
operating properly.

6.6.3 Ethernet Local Loopback Test

Ethernet local loopback tests if the Ethernet capabilities on the local TC8518 are
operating properly.

6.6.4 T1/E1 Remote Loopback Test

T1/E1 Remote Loopback tests both the remote TC8518's optical transceivers and its
T1/E1 capabilities. Please refer to Figure 6-8, Local Loopback Tests.

6.6.5 Ethernet Remote Loopback Test

Ethernet Remote Loopback tests the remote TC8518's optical transceivers and
Ethernet capabilities.

6-4 TC8518 Rev 2.2 User Manual

Chapter 6 Troubleshooting Loopback Tests

Figure 6-7 Ethernet Remote Loopback Test

TC8518 Rev 2.2 User Manual 6-5

Chapter 6 Troubleshooting Loopback Tests

Figure 6-8 Local Loopback Tests

6-6 TC8518 Rev 2.2 User Manual

Chapter 6 Troubleshooting Loopback Test - Remote Ethernet

6.7 Loopback Test - Remote Ethernet

Figure 6-9 Remote Loopback: Ethernet Tests

TC8518 Rev 2.2 User Manual 6-7

Chapter 6 Troubleshooting T1/E1 CSU loop up & loop down codes

Figure 6-10 Loopback Test - T1/E1 Remote

6.8 T1/E1 CSU loop up & loop down codes

The TC8518 supports CSU up (10000) and CSU down (100) codes by automatically
enabling loopbacks. CSU line code monitoring is disabled by default and can be
configured using CLI by issuing the following command:

t1e1 loop_code_monitor_set

Alternatively one can go to the T1/E1 Diagnostic webpage and set it up there. The
options are Disabled, Enable Local and Enable Remote. By setting it to Enable
Local, the device will be monitoring the incoming T1/E1 signal going to the RJ48
port for loop codes and will enable/disable local loopback accordingly. Using the
Enable Remote setting will monitor the T1/E1 signal coming in from the remote unit
(over the OC/3 signal) and enable / disable the remote loopback accordingly.

The diagram below shows the T1/E1 signal flow and related loopbacks.

6-8 TC8518 Rev 2.2 User Manual

Chapter 6 Troubleshooting T1/E1 CSU loop up & loop down codes

Figure 6-11 T1/E1 Remote Loop Back Signal Flow

TC8518 Unit A
Loop Monitor

Disabled Enable Remote This setting allows the Telco to send loop codes

TC8518 Unit B
Loop Monitor

Functionality

that will enable/disable the remote loopback on
Unit B for a specific T1 channel.

Figure 6-12 T1/E1 Local Loop Back Signal Flow

TC8518 Unit A
Loop Monitor

Enable Local Disabled This setting allows the Telco to send loop codes

TC8518 Rev 2.2 User Manual 6-9

TC8518 Unit B
Loop Monitor

Functionality

that will enable/disable the local loopback on Unit
A for a specific T1 channel.

Chapter 6 Troubleshooting T1/E1 CSU loop up & loop down codes

Figure 6-13 T1/E1 Both Units Loop Back Signal Flow

TC8518 Unit A
Loop Monitor

Enable Local Enable Local This setting allows the Telco to enable/disable Unit

TC8518 Unit B
Loop Monitor

Functionality

A's local loopback by sending loop codes from the
CO side. Also, loop codes sent from the
demarcation side will enable/disable the local
loopback on unit B.

6-10 TC8518 Rev 2.2 User Manual

Appendix A Return Policy

A.1 Return Policy

To return a product, you must first obtain a Return Material Authorization number
from the Customer Service Department. If the product’s warranty has expired, you
will need to provide a purchase order to authorize the repair. When returning a
product for a suspected failure, please provide a description of the problem and any
results of diagnostic tests that have been conducted.

A.1.1 Warranty

Damages by lightning or power surges are not covered under this warranty.
All products manufactured by TC Communications, Inc. come with a five year

(beginning 1-1-02) warranty. TC Communications, Inc. warrants to the Buyer that
all goods sold will perform in accordance with the applicable data sheets, drawings
or written specifications. It also warrants that, at the time of sale, the goods will be
free from defects in material or workmanship. This warranty shall apply for a period
of five years from the date of shipment, unless goods have been subject to misuse,
neglect, altered or destroyed serial number labels, accidents (damages caused in
whole or in part to accident, lightning, power surge, floods, fires, earthquakes,
natural disasters, or Acts of God.), improper installation or maintenance, or
alteration or repair by anyone other than Seller or its authorized representative.

Buyer should notify TC Communications, Inc. promptly in writing of any claim
based upon warranty, and TC Communications, Inc., at its option, may first inspect
such goods at the premises of the Buyer, or may give written authorization to Buyer
to return the goods to TC Communications, Inc., transportation charges prepaid, for
examination by TC Communications, Inc. Buyer shall bear the risk of loss until all
goods authorized to be returned are delivered to TC Communications, Inc. TC
Communications, Inc. shall not be liable for any inspection, packing or labor costs
in connection with the return of goods.

In the event that TC Communications, Inc. breaches its obligation of warranty, the
sole and exclusive remedy of the Buyer is limited to replacement, repair or credit of
the purchase price, at TC Communications, Inc.’s option.

TC8518 Rev 2.2 User Manual A-1

A Return Policy Return Policy

To return a product, you must first obtain a Return Material Authorization (RMA)
number and RMA form from the Customer Service Department. If the product’s
warranty has expired, you will need to provide a purchase order to authorize the
repair. When returning a product for a suspected failure, please fill out RMA form
provided with a description of the problem(s) and any results of diagnostic tests that
have been conducted. The shipping expense to TC Communications should be
prepaid. The product should be properly packaged and insured. After the product is
repaired, TC Communications will ship the product back to the shipper at TC's cost
to U.S. domestic destinations. (Foreign customers are responsible for all shipping
costs, duties and taxes [both ways]. We will reject any packages with airway bill
indicating TC communications is responsible for Duties and Taxes. To avoid
Customs Duties and Taxes, please include proper documents indicating the
product(s) are returned for repair/retest).

A.1.2 Limitation of Liability

1. In no event shall the total liability of T C COMMUNICATIONS, INC. to

purchaser and/or end user for all damages including but not limited to
compensatory, consequential and punitive damages, exceed the total amount
paid to T C Communications, Inc. by purchaser for the goods from which the
claim arose, in no event shall T C COMMUNICATIONS, INC. be responsible
for indirect and consequential damages.

2. In no event shall liability attached to T C COMMUNICATIONS, INC. unless

notice in writing is given to T C COMMUNICATIONS, INC. within ten days
of the occurrence of the event giving rise to such claim.

3. T C COMMUNICATIONS, INC. shall not be responsible for delays or non-

deliveries directly or indirectly resulting from or contributed to by foreign or
domestic embargoes, seizure, fire, flood, explosion, strike, act of God,
vandalism, insurrection, riot, war, or the adoption or enactment of any law,
ordinances, regulation, or ruling or order or any other cause beyond the control
of T C COMMUNICATIONS, INC.

4. T C COMMUNICATIONS, INC. shall not be responsible for loss or damage

in transit and any claims for such loss or damage shall be filed by the purchaser
with the carrier.

A-2 TC8518 Rev 2.2 User Manual

Appendix BSafety

B.1 Overview

This manual contains instructions which must be observed to ensure your own
personal safety and to avoid damage to devices and machinery.

B.2 Certified Usage

Please observe the following: the TC8518 may only be employed for the purposes
described in the catalog and technical description, and only in conjunction with
external devices and components recommended or approved by TC
Communications. The product can only be operated correctly and safely if it is
transported, stored, installed and assembled properly and correctly. Furthermore, it
must be operated and serviced carefully.

B.2.1 Qualification Requirements for Personnel

Qualified personnel as understood in this manual and the warning signs, are persons
who are familiar with the setup, assembly, startup, and operation of this product and
are appropriately qualified for their job. This includes, for example, those persons
who have been trained or directed or authorized to switch on and off, to ground and
to label power circuits and devices or systems in accordance with current safety
engineering standards.

B.2.2 National and International Safety Regulations

Ensure that the electrical installation meets local or nationally applicable safety
regulations. The product can be used in living areas (living area, place of business,
small business) and in industrial areas.

CAUTION

All LED components conform to the following standard; Light
Emitting Diode - Class 1 Led Product.

TC8518 Rev 2.2 User Manual B-1

B Safety Power Supply

NOTE Appropriate testing has established that this device fulfills the

requirements of a class A digital device in line with part 15 of the
FCC regulations.

These requirements are designed to provide sufficient protection
against interference where the device is being used in a business
environment. The device creates and uses high frequencies and can
radiate at the same frequencies, and if it is not installed and used in
accordance with this operating manual, it can cause radio transmission
interference. The use of this device in a living area can also cause
interference, and in this case the user is obliged to cover the costs of
removing the interference.

B.2.3 Recycling

After usage, this product must be disposed of properly as electronic waste in
accordance with the current disposal regulations of your county / state / country.

B.3 Power Supply

This device is electrically operated. Adhere strictly to the safety requirements
relating to voltages applied to the device as described in the Specifications
(TC8518), on page 1-10.

B.3.0.1 General Safety Instructions

The TC8518 is designed for operation with a safety extra-low voltage. It may only
be connected to the supply voltage connections and to the signal contact with SELV
circuits with the voltage restrictions in accordance with IEC/EN 60950-1. The
supply voltage is electrically isolated from the housing.

• Use only undamaged systems! See Unpacking, on page 2-1.

• Relevant for North America: For Use in Class 2 Circuits. The subject unit is to

be supplied by a Class 2 power source complying with the requirements of the
National Electrical Code, table 11(b). If the power is redundant supplied (two
individual power sources) the power sources together should comply with the
requirements of the National Electrical Code, table 11 (b).

• Relevant for North America: Use 60/75°C or 75°C copper wire (CU) only.

• Relevant for North America for devices certified for hazardous locations:

Peripheral equipment must be suitable for the lo
input and output (I/O) wiring must be in accordance with Class I, Division 2
wiring methods [Article 501-4(b) of the National Electrical Code, NFPA 70]
and in accordance with the authority having jurisdiction.

cation it is used in. Power,

• The device does not contain any service components. Internal fuses only

trigger if there is a fault in the device. If the device is not functioning correctly,
or if it is damaged, switch off the voltage supply and contact TC
Communications customer service.

B-2 TC8518 Rev 2.2 User Manual

B Safety Environment

• Only switch on the supply voltage to the device if the housing is closed, the

terminal blocks are wired up correctly and the terminal blocks are connected to
the correct type of voltage supply.

B.3.0.2 Grounding

All TC Communications products are fully grounded and are in compliance
accordance with all regulations and Specifications (TC8518), on page 1-10.

B.3.0.3 Housing

Only technicians authorized by TC Communications are permitted to open the
housing and break the seal.

• E nsure that the electrical installation meet s local or nationally applicable safety

regulations.

• Never insert pointed objects (thin screwdrivers, wires, etc.) into the inside of

the ventilation holes in the side of the housing! Failure to observe this point
may result in injuries caused by electric shocks.

B.4 Environment

“Industrial Hardened” and “Industrial Ethernet” describe communications products
designed to operate in industrial process control environments or geographical
locations where harsh conditions are common.

To meet this level of durability, “Industrial” grade (synonyms for “industrial”
commonly include “rugged,” “outdoor,” “hardened,” and “substation hardened”)
TC's communications products are manufactured with special components,
connectors and circuitry. This ensures reliable operation in the event of wide
temperature swings, electromagnetic interference (EMI), radio interference,
vibrations, or moisture and humidity fluctuations. Conformal coating is optional.

TC Communications Industrial Grade products are designed to exceed pertinent
industry specifications. For example, communications equipment used in power
substations are subject to extremes of temperature and humidity, as well as electrica l
transients from high voltage switching.

These environmental conditions are described in industrial standard specifications
IEC 61850-3 and IEEE 1613 for networking devices. Similarly, equipment used for
traffic control applications are required to withstand roadside vibration in addition to
high/low heat and humidity. Testing standards pertinent to traffic control are
described in the environmental requirements of the NEMA TS-2 standard.

Every TC Communications product passes through “live operating temperature”
testing (unlike randomly selected products for statistical sampling) before it is
shipped. Each unit is connected to an operating BER tester to ensure error-free
operation while the temperature chamber cycles from -40ºC to 80ºC during the 24
hour testing period.

TC8518 Rev 2.2 User Manual B-3

B Safety Environment

• The installation location is to be selected so as to ensure compliance with the

climatic limits listed in the Technical Data.

• Ensure the following criteria in site selection;

- Room for adequate ventilation and cable routing.

- Reserve space at least 0.5 m at the front and rear of the unit for human
access

, cables, and air flow.

.

Important

• Avoid locating it next to any equipment that may produce
electrical interference or strong magnetic fields, such as elevator
shafts or heavy duty power supplies.

• As with any electronic equipment, keep the unit from excessive
moisture, heat, vibration, and freezing temperatures.

B-4 TC8518 Rev 2.2 User Manual

Glossary

A

B

Bandwidth

C

Counter-

Rotating Ring

ALM

Bridge

Bus

A front panel LED that indicates an alarm. See SNMP Query, on page 5-1.

A range of frequencies available for signaling; the differences between the
highest and lowest frequencies of a band are expressed in (Hz).

A device used to connect two separate LANs or used to divide a large LAN into
smaller LANs. Each LAN acts as its own LAN, but uses a bridge device to
communicate from one LAN to another.

Path or channel, usually electrical, with one or more conductors, where all
devices are able to receive all transmissions at the same time.

Aka. Self-Healing Ring; has two physical transmission lines or rings with
transmitting and receiving signals in each ring traveling in opposite directions. If
the line or a device along the ring fails, the ring re-anneals by bypassing the
device and or line and forms with the other ring to form a new single ring.

D

DCE

DCAR

DTE
DTR

TC8518 Rev 2.2 User Manual Glossary-1

Acronym for Data Communication Equipment, aka. Data Circuit-Terminating
Equipment.

Acronym for Dry Contact Alarm Relay

Acronym for Data Terminating or Data Terminal Equipment.

Acronym for Data Terminal Ready.

E

F

Fiber Optic

Flow Control

Full Duplex

EIA

Ethernet

Cable

FPGA

Acronym for Electronic Industries Association. EIA, a standards body, has a set
of standards which includes data communications and interface standards among
others.

Product name for one of the first popular LAN technologies, later standardized as
IEEE 802.3.

Thin filaments of glass or other transparent material sheathed in an insulator
through which a light beam may be transmitted for long distances by means of
multiple internal reflections. A waveguide used to transmit digital information.

A method for a receiver to control the information flow from a transmitter. It
eliminates data overflow at the receiver.

Acronym for Field Programmable Gate Array.

A communication method where both ends can transmit and receive
simultaneously.

H

Half Duplex

I

IGMP Snooping

IP Address

Hub

A communication method where one end transmits while the other end receives,
then reverses the process.

A device for local area networks (LANs) that is used to interconnect multiple
devices over an internal bus.

IGMP snooping is the process of listening to IGMP network traffic. IGMP
snooping, as implied by the name, is a feature that allows a layer 2 switch to
“listen in” on the IGMP conversation between hosts and routers by processing the
layer 3 IGMP packets sent in a multicast network.

An Internet Protocol (IP) address is a numerical identification (logical address)
that is assigned to network devices, in this case the TC3848-1. Each TC3848-1 in
the network will have its own unique IP address.

Glossary-2 TC8518 Rev 2.2 User Manual