H3C VG 21-08 User manual

H3C VG 21-08 Voice Gateway
Installation Manual
Hangzhou Huawei-3Com Technology Co., Ltd
http://www.huawei-3com.com
Manual Version: T2-08043T-20060720-C-1.00

Copyright © 2006, Hangzhou Huawei-3Com Technology
Co., Ltd. and its licensors
All Rights Reserved
No part of this manual may be reproduced or transmitted in any form
or by any means without prior written consent of Hangzhou
Huawei-3Com Technology Co., Ltd.
Trademarks
H3C, Aolynk, , IRF, H3Care, , Neocean, , TOP
G, SecEngine, SecPath, COMWARE, VVG, V2G, VnG, PSPT, NetPilot,
and XGbus are trademarks of Hangzhou Huawei-3Com Technology
Co., Ltd.
All other trademarks that may be mentioned in this manual are the
property of their respective owners.
Notice
The information in this document is subject to change without notice.
Every effort has been made in the preparation of this document to
ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of
any kind, express or implied.
To obtain the latest information, please access:
http://www.huawei-3com.com
Technical Support
[e-mail]
http://www.huawei-3com.com

About This Manual
Related Documentation
In addition to this manual, each H3C VG Series Voice Gateways
documentation set includes the following:
Manual Content
H3C VG Series Voice Gateways
Operation Manual
It provides guidelines to user
operations on the H3C VG
Series Voice Gateways.
H3C VG Series Voice Gateways
Command Manual
It provides all commands
available in the H3C VG Series
Voice Gateways as well as the
command usage and examples.
H3C VG Series Voice Gateways
Web-based Configuration
Manual
It provides guidelines to
Web-based configuration on the
H3C VG Series Voice
Gateways.
Organization
H3C VG 21-08 Voice Gateway Installation Manual is organized
as follows:
Chapter Contents
1 Product Overview
Profiles the core technology,
features, product appearance,
performance and interface
attributes of the VG 21-08.

Chapter Contents
2 Installation Preparations Focuses on the site
requirements, precautions, and
tools for installation.
3 Installing the VG 21-08
Installing the VG 21-08
elaborates the installation
flowchart and how to install H3C
VG 21-08 Voice Gateway.
4 Booting and Configuring the
VG 21-08
Presents booting and
configuration fundamentals of
H3C VG 21-08 Voice Gateway
including setting up, powering
up the device, and basic
configuration procedures.
5 Software Maintenance Lists the way to maintain the
software of H3C VG 21-08
Voice Gateway.
6 Troubleshooting Introduces possible symptoms
and the solutions to them.
Conventions
The manual uses the following conventions:
I. Command conventions
Convention Description
Boldface The keywords of a command line are in
Boldface.
italic Command arguments are in italic.
[ ] Items (keywords or arguments) in square
brackets [ ] are optional.

Convention Description
{ x | y | ... }
Alternative items are grouped in braces
and separated by vertical bars. One is
selected.
[ x | y | ... ]
Optional alternative items are grouped in
square brackets and separated by vertical
bars. One or none is selected.
{ x | y | ... } *
Alternative items are grouped in braces
and separated by vertical bars. A minimum
of one or a maximum of all can be selected.
[ x | y | ... ] *
Optional alternative items are grouped in
square brackets and separated by vertical
bars. Many or none can be selected.
# A line starting with the # sign is comments.
II. GUI conventions
Convention Description
< > Button names are inside angle brackets.
For example, click <OK>.
[ ]
Window names, menu items, data table
and field names are inside square
brackets. For example, pop up the [New
User] window.
/ Multi-level menus are separated by forward
slashes. For example, [File/Create/Folder].

Symbols III.
Convention Description
Warning Means reader be extremely careful.
Improper operation may cause bodily
injury.
Caution
Means reader be careful. Improper
operation may cause data loss or damage
to equipment.
Note Means a complementary description.
Environmental Protection
This product has been designed to comply with the requirements
on environmental protection. For the proper storage, use and disposal
of this product, national laws and regulations must be observed.

Installation Manual
H3C VG 21-08 Voice Gateway Table of Contents
i
Table of Contents
Chapter 1 Product Overview ........................................................1-1
1.1 Introduction ........................................................................1-1
1.2 Hardware Features ............................................................1-1
1.2.1 Appearance.............................................................1-1
1.2.2 System Specifications.............................................1-2
1.2.3 LEDs........................................................................1-3
1.2.4 Interface Attributes..................................................1-5
Chapter 2 Installation Preparations.............................................2-1
2.1 Site Requirements..............................................................2-1
2.1.1 Temperature/Humidity.............................................2-1
2.1.2 Cleanliness..............................................................2-2
2.1.3 ESD Prevention.......................................................2-3
2.1.4 Electromagnetic Environment .................................2-4
2.1.5 Lightning Protection.................................................2-4
2.1.6 Checking the Rack..................................................2-4
2.2 Safety Precautions.............................................................2-5
2.3 Tools, Meters, and Devices ...............................................2-6
Chapter 3 Installing the VG 21-08 ................................................3-1
3.1 Installation flowchart ..........................................................3-1
3.2 Installing the VG 21-08 ......................................................3-2
3.2.1 Table Mounting........................................................3-2
3.3 Connecting the Grounding Cable.......................................3-2
3.4 Connecting to the Console Terminal..................................3-3
3.5 Connecting to an Ethernet Interface..................................3-4

Installation Manual
H3C VG 21-08 Voice Gateway Table of Contents
ii
3.6 Connecting the Telephone Cable......................................3-5
3.7 Connecting the PSU ..........................................................3-6
3.8 Verifying Installation...........................................................3-7
Chapter 4 Booting and Configuring the VG 21-08......................4-1
4.1 Booting...............................................................................4-1
4.1.1 Setting up a Configuration Environment .................4-1
4.1.2 Powering up the VG 21-08......................................4-5
4.1.3 Startup Process.......................................................4-7
4.2 Configuration Fundamentals..............................................4-9
4.2.1 Basic Configuration Procedures..............................4-9
4.2.2 Features of the Command Line Interface................4-9
Chapter 5 Software Maintenance.................................................5-1
5.1 Boot Menu..........................................................................5-1
5.2 Upgrading Application and Boot ROM Programs Using
XModem...................................................................................5-4
5.3 Backing up and Restoring the Extended Segment of the Boot
ROM Program..........................................................................5-9
5.4 Repairing Errors in the Extended Segment of Boot ROM5-10
5.5 Upgrading the Application Program Using TFTP.............5-12
5.6 Uploading/Downloading Configuration File and Program
Using FTP..............................................................................5-17
5.7 Recovering/Replacing the Lost Password.......................5-22
Chapter 6 Troubleshooting...........................................................6-1
6.1 Troubleshooting the Power System...................................6-1
6.2 Troubleshooting the Configuration System........................6-1

Installation Manual
H3C VG 21-08 Voice Gateway List of Figures
iii
List of Figures
Figure 1-1 Appearance of the VG 21-08.................................1-1
Figure 1-2 VG 21-08 front panel .............................................1-2
Figure 1-3 VG 21-08 rear panel..............................................1-2
Figure 1-4 VG 21-08 front panel .............................................1-4
Figure 3-1 Installation flowchart..............................................3-1
Figure 3-2 Console cable assembly........................................3-3
Figure 3-3 Ethernet cable assembly .......................................3-4
Figure 4-1 Local configuration through the console port.........4-1
Figure 4-2 Set up a new connection .......................................4-2
Figure 4-3 Set the connection port..........................................4-3
Figure 4-4 Set communication parameters.............................4-4
Figure 4-5 Set the terminal type..............................................4-5
Figure 5-1 The Send File dialog box.......................................5-6
Figure 5-2 The Sending File interface.....................................5-6
Figure 5-3 Set up an environment for upgrading through TFTP
........................................................................................5-12
Figure 5-4 Setting up an environment for local upload/download
through FTP....................................................................5-18
Figure 5-5 Setting up an environment for remote
upload/download through FTP.......................................5-19

Installation Manual
H3C VG 21-08 Voice Gateway List of Tables
iv
List of Tables
Table 1-1 System Specifications..............................................1-2
Table 1-2 LEDs........................................................................1-4
Table 1-3 Attributes of the console port...................................1-5
Table 1-4 Attributes of the FE interface...................................1-5
Table 1-5 Attributes of the FXO port........................................1-6
Table 2-1 Temperature/Humidity requirements in the equipment
room .................................................................................2-1
Table 2-2 Requirement on dust content in the equipment room
..........................................................................................2-2
Table 2-3 Limits on harmful gas contents in an equipment room
..........................................................................................2-2

Installation Manual
H3C VG 21-08 Voice Gateway Chapter 1 Product Overvie
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1-1
Chapter 1 Product Overview
1.1 Introduction
H3C VG 21-08 Voice Gateway (hereinafter referred to as VG
21-08) is a new-generation access device intended for enterprise and
SOHO (Small Office, Home Office) users. It integrates the access of
voice, fax, and data signals over IP networks, functioning to transform
analog voice or fax signals to IP data and forward the data.
The VG 21-08 provides abundant IP telephony features, such as
Voice over IP (VoIP), Fax over IP (FoIP), call control, resources
management, and maintenance management, as well as multiple
coding schemes. It also supports DHCP Client, boasting excellent
price/performance ratio.
The VG 21-08 provides eight FXO ports and two Ethernet
interfaces. So it can connect to the subscriber line of a
program-controlled telephone switching system through the FXO
ports and connect to the Internet through the Ethernet interfaces.
1.2 Hardware Features
1.2.1 Appearance
Figure 1-1 Appearance of the VG 21-08

Installation Manual
H3C VG 21-08 Voice Gateway Chapter 1 Product Overvie
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1-2
Figure 1-2 VG 21-08 front panel
Figure 1-3 VG 21-08 rear panel
1.2.2 System Specifications
Table 1-1 System Specifications
Item Description
Fixed interface One console port Eight FXO ports
One Ethernet interface
Processor MPC852T
Boot ROM 512 KB
SDRAM 32 KB
Flash memory 8 MB
Physical dimensions (H ×
W × D) 42 × 300 × 200 mm (1.7 × 11.8 × 7.9 in.)

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H3C VG 21-08 Voice Gateway Chapter 1 Product Overvie
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1-3
Item Description
Weight 2 kg (4.4 lb)
Input voltage
Rated voltage:
100 VAC to 240 VAC, 50/60 Hz
Max. voltage:
90 VAC to 264 VAC, 47/63 Hz
Max. power consumption 6 W
Operating temperature 0°C to 40°C (32°F to 104°F)
Relative humidity
(non-condensing) 10% to 90%
Note:
Synchronous Dynamic Random Access Memory (SDRAM) is where
the application program is running.
Flash memory stores programs and configuration files.
1.2.3 LEDs
The VG 21-08 has 11 LEDs in total as described in the following
figure.

Installation Manual 1
H3C VG 21-08 Voice Gateway Chapter Product Overvie
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1-4
(1)
(2) (4)
(3)
(1) Power LED (2) System LED
(3) FXO LEDs 1 to 8 (4) ETH LED
Figure 1-4 VG 21-08 front panel
Table 1-2 LEDs
LED Description
POWER OFF indicates the PSU is not supplying power
to the device. ON means the PSU is supplying
power to the device.
SYSTEM Blinking indicates the system is operating
normally. Steady ON or OFF means the
system is not operating normally.
FXO 1 to 8 ON indicates there is a call.
Ethernet Interface OFF indicates that no LAN link is present. Slow blinking indicates a LAN link is present.
Fast blinking indicates a data transmission.

Installation Manual
H3C VG 21-08 Voice Gateway Chapter 1 Product Overvie
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1-5
1.2.4 Interface Attributes
The VG 21-08 provides one console port, two 10/100 Mbps
Ethernet interfaces, and eight FXO ports. The following subsections
describe the attributes of these ports.
I. Console port (CON)
Table 1-3 Attributes of the console port
Attribute Description
Connector RJ-45
Number of
connectors 1
Cable Console cable
Interface standard RS232
Baud rate 9600 bps (default) to 115200 bps
Services Connection to an ASCII terminal
Connection to a serial port on a local PC to
run terminal emulation program on the PC
II. Fast Ethernet (FE) interface
Table 1-4 Attributes of the FE interface
Attribute Description
Connector RJ-45
Number of
connectors 1

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H3C VG 21-08 Voice Gateway Chapter 1 Product Overvie
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1-6
Attribute Description
Cable Straight-through cable, crossover cable
Frame format Ethernet_II
Ethernet_SNAP
Operating mode 10/100 Mbps auto-sensing
Full duplex/Half duplex auto-sensing
Network protocol Internet Protocol (IP)
III. FXO port
Table 1-5 Attributes of the FXO port
Attribute Description
Connector RJ-11
Number of
connectors 8
Cable Telephone cable with ferrite bead
Interface
standard
Trunk interface of the loop compliant with ITU
Q.552.
Overcurrent and overvoltage protection
compliant with ITU K.20
Dialing mode Supports DTMF (dual-tone multi-frequency),
compliant with GB3378; does not support pulse
dialing.
Bandwidth 300 Hz to 3400 Hz

Installation Manual
H3C VG 21-08 Voice Gateway Chapter 2 Installation Preparations
2-1
Chapter 2 Installation Preparations
2.1 Site Requirements
The VG 21-08 is intended for indoor use. To ensure normal
operation and long service life for your device, install it in an
environment that meets the requirements described in the following
subsections.
2.1.1 Temperature/Humidity
You must keep the temperature and humidity in the equipment
room within a certain range. Long-term high humidity will lead to bad
insulation or even electricity leakage, mechanical property change,
and corrosion. However, too low relative humidity is likely to leave
captive screws loose due to contraction of insulation washers and
static electricity that threatens the CMOS circuit on the device. High
temperature accelerates aging of insulation materials and lowers
reliability and service life of your VG 21-08.
The following table lists temperature and humidity requirements
for the VG 21-08.
Table 2-1 Temperature/Humidity requirements in the equipment
room
Temperature Relative humidity
0°C to 40°C (32°F to 104°F) 10% to 90%

Installation Manual
H3C VG 21-08 Voice Gateway Chapter 2 Installation Preparations
2-2
2.1.2 Cleanliness
The equipment room must be free of explosive, electric, magnetic,
and corrosive dust. The contents of dust must be limited as shown in
the following table:
Table 2-2 Requirement on dust content in the equipment room
Max. particle size (μm) 0.5 1 3 5
Max. concentration
(number of particles per
cubic meter) 1.4 × 1077 × 1052.4 ×
1051.3 × 105
Besides dust, there are rigorous limits on harmful gases that can
accelerate erosion and aging of metals, such as salts, acids, and
sulfides, as shown in the following table.
Table 2-3 Limits on harmful gas contents in an equipment room
Gas Average (mg/m3) Maximum (mg/m3)
SO20.2 1.5
H2S 0 0.03
NO20.04 0.15
NH30.05 0.15
Cl20.01 0.3

Installation Manual
H3C VG 21-08 Voice Gateway Chapter 2 Installation Preparations
2-3
2.1.3 ESD Prevention
Although VG 21-08 is designed to be Electrostatic Discharge
(ESD) preventive, excessive static electricity may enormously
damage the card circuits or even the whole device.
Static electricity affecting the VG 21-08 and the related network
mainly comes from outdoor high-pressure power cables and electric
fields caused by thunder and lightning as well as indoor environment
and materials. To prevent damage, observe the following:
zEnsure the unit and the floor is connected to earth ground.
zKeep the equipment room clean.
zMaintain suitable temperature and humidity.
zWear an ESD-preventive wrist strap and uniform when
handling the circuit board.
zPlace the removed circuit board on an ESD-preventive
workbench or in an antistatic bag right-side up.
zHold the removed circuit board only by its edge when
observing or moving it. Do not touch the components on it.
Warning:
There is an anti-dismantle seal on a screw on the chassis. You must
keep the seal intact before your sales representative maintains your
VG 21-08. Huawei-3Com is not liable for any damageor consequence
resulted from users' operation without permission.

Installation Manual
H3C VG 21-08 Voice Gateway Chapter 2 Installation Preparations
2-4
2.1.4 Electromagnetic Environment
Any possible interference source, wherever it is from, impacts the
VG 21-08 negatively in the form of capacitive coupling, inductive
coupling, electromagnetic radiation, or common-impedance (including
the grounding system) coupling. To resist the interference, make sure
to:
zTake effective measures against the interference caused by
the electrical power grid.
zUse a grounding system or lightning protection grounding
different from that for the power supply system and keep
them as far as possible.
zKeep the device far from radio transmitting station, radar
station, and high-frequency high-current devices.
zUse electromagnetic shielding when necessary.
2.1.5 Lightning Protection
Although the VG 21-08 is designed to be lightning resistant,
excessive lightning interference can damage your device. To protect
your device against lightning.
zEnsure the chassis is connected to earth ground.
zEnsure the earth point of the power socket is well connected
to earth ground.
zAdd a lightning arrester to the front end of the power input to
better protect the power supply against lightning strikes.
2.1.6 Checking the Rack
When installing the VG 21-08 in a rack, make sure that: