GreaTEL GT8 User manual
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GT8 User Manual
Release 2.3
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Welcome
Welcome to the GT8 VoIP Gateway User manual. This document covers features,
functionalities, and installation procedures for the GT8 series, and provides tested
configuration examples for our gateway users. After reading this book, you will learn more
about the gateway, get familiar with the installation process, and feel more comfortable in
using the software to perform all administrative activities.
Version:
Document Version: 2.3.
Applicable Software Version: 1.9.x Series.
Copyright:
© Copyright 2007 GED. All rights reserved.
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TABLE OF CONTENTS
PRODUCT INTRODUCTION.........................................................................................................................7
Overview ...................................................................................................................................................7
Features ....................................................................................................................................................8
Hardware Platform...................................................................................................................................9
Physical...............................................................................................................................................9
System Specifications.......................................................................................................................10
PREPARATION FOR INSTALLATION.......................................................................................................11
Safety Check ..........................................................................................................................................11
Installation Environment........................................................................................................................11
Temperature/Humidity .....................................................................................................................11
Dust Control and Air Flow...............................................................................................................12
Interference and Lightening Hazard.................................................................................................12
Installing GT8...................................................................................................................................12
Inspecting GT8 and Its Accessories ...................................................................................................12
INSTALLATION..............................................................................................................................................14
Installing GT8 .........................................................................................................................................14
Connecting the Cables..........................................................................................................................14
Connecting the Ethernet Port............................................................................................................14
Connecting FXS Cable.....................................................................................................................16
Connecting FXO Cable ....................................................................................................................16
Connecting the Power Supply..............................................................................................................17
Final Checks after Installation..............................................................................................................17
FUNCTION DESCRIPTION .........................................................................................................................18
Registration.............................................................................................................................................18
Function Description of Most Used Buttons.......................................................................................19
System Configurations ..........................................................................................................................20
Software Version..............................................................................................................................21
Hardware Version.............................................................................................................................21
DSP Version.....................................................................................................................................21
RTP Port Min and Max ....................................................................................................................21
First Digit Timeout...........................................................................................................................21
Inter Digit Timeout...........................................................................................................................22
Critical Dgt Timeout.........................................................................................................................22
DTMF Mode.....................................................................................................................................22
Default Codec...................................................................................................................................22
Echo cancellation..............................................................................................................................23
Set up the Phone Numbers ..................................................................................................................23
Hardware ..........................................................................................................................................24
Prefix ................................................................................................................................................24
FXS(1~4)/ FXO(1~4).......................................................................................................................24
MGCP Setting.........................................................................................................................................25
MGCP Port.......................................................................................................................................26
Call Agent.........................................................................................................................................26
Domain Name...................................................................................................................................27
Default Packages ..............................................................................................................................27
Persistent Line Event........................................................................................................................27
Wildcard...........................................................................................................................................27
All Wildcard.....................................................................................................................................27
End-Of-Line Using...........................................................................................................................28
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Quarantine Default to Loop..............................................................................................................28
Default Package Don’t Send Name..................................................................................................28
Always Enable 1st Digit Timeout.....................................................................................................28
Onhook don’t Delete Connection.....................................................................................................28
Notify Instead of 401/402.................................................................................................................29
Using L Package Handle FXO .........................................................................................................29
Using Configured Digit Map............................................................................................................29
SIP Setting ..............................................................................................................................................29
SIP Port.............................................................................................................................................30
SIP Proxy..........................................................................................................................................30
SIP Registrar.....................................................................................................................................30
Registration Expires(s) .....................................................................................................................31
SIP Domain Name............................................................................................................................31
Authentication Mode........................................................................................................................31
User Name........................................................................................................................................31
Password...........................................................................................................................................31
Network Configuration...........................................................................................................................32
Hostname..........................................................................................................................................32
Gateway IP Address .........................................................................................................................33
DHCP ...............................................................................................................................................33
Ethernet IP Address..........................................................................................................................33
Subnet Mask.....................................................................................................................................33
Hardware Address ............................................................................................................................33
DNS..................................................................................................................................................33
DNS Primary Server.........................................................................................................................34
DNS Alternate Server.......................................................................................................................34
PPPoE...............................................................................................................................................34
Time Primary Server ........................................................................................................................34
Time Alternate Server ......................................................................................................................34
Timeout.............................................................................................................................................34
Interval..............................................................................................................................................34
Time Zone ........................................................................................................................................35
Supplementary Features ......................................................................................................................35
Setting up the Feature Keys..............................................................................................................35
Set up All Forward ...........................................................................................................................40
Set up Busy Forward ........................................................................................................................41
Set up No Answer Forward ..............................................................................................................41
Set up Fashion Ring..........................................................................................................................42
Set up Hotline...................................................................................................................................42
Dialing Plan and Routing Table ...........................................................................................................43
Set up the Dialing Plan.....................................................................................................................43
Set up the Routing Table ..................................................................................................................44
Set up the FXS Ports.............................................................................................................................51
Phone Number..................................................................................................................................52
Registration.......................................................................................................................................52
Display Name...................................................................................................................................53
Password...........................................................................................................................................53
Originating Restriction .....................................................................................................................53
Call Waiting field .............................................................................................................................53
Call Holding .....................................................................................................................................53
Call Forward.....................................................................................................................................53
Caller ID...........................................................................................................................................53
CID On Call Waiting........................................................................................................................54
Anonymous Call...............................................................................................................................54
Hotline..............................................................................................................................................54
Hotline Delay....................................................................................................................................54
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Do Not Disturb.................................................................................................................................54
Speed Dial ........................................................................................................................................54
Fashion Ring.....................................................................................................................................54
Reverse Battery.................................................................................................................................54
DDI Line...........................................................................................................................................55
Maintenance .....................................................................................................................................55
Call Control Reset ............................................................................................................................55
All Forward Number ........................................................................................................................55
Busy Forward ...................................................................................................................................55
No answer Fwd Number...................................................................................................................55
Hotline Number................................................................................................................................55
Speed Dial List .................................................................................................................................56
Fashion Ring ID................................................................................................................................56
Set up the FXO.......................................................................................................................................56
Phone Number..................................................................................................................................57
Registration.......................................................................................................................................57
Display Name...................................................................................................................................57
Password...........................................................................................................................................57
Originating Restriction .....................................................................................................................58
Hotline..............................................................................................................................................58
Dialtone ............................................................................................................................................58
Echo Cancellation.............................................................................................................................58
Detect FSK .......................................................................................................................................58
Hotline Number................................................................................................................................58
Advanced Options .................................................................................................................................58
System Advanced Options................................................................................................................58
Advanced FXO Options ...................................................................................................................62
Advanced FXS Options....................................................................................................................64
Advanced IP Options........................................................................................................................66
Advanced SIP Options......................................................................................................................72
Backup Agent Config.......................................................................................................................75
Border Proxy Config ........................................................................................................................76
EMS Optional...................................................................................................................................78
Bill Optional.....................................................................................................................................78
Log Information ......................................................................................................................................81
Call Status Information.....................................................................................................................81
Resources Information......................................................................................................................82
Message Information........................................................................................................................82
Error Information..............................................................................................................................83
Startup Information...........................................................................................................................83
Clear Message Information...............................................................................................................83
System Tools..........................................................................................................................................84
Restore Factory Setting ....................................................................................................................84
Software Update...............................................................................................................................84
Change Password..............................................................................................................................85
Restart Gateway................................................................................................................................86
Help ..................................................................................................................................................86
Exit ...........................................................................................................................................................86
APPENDIX......................................................................................................................................................87
Factory Default Settings........................................................................................................................87
Glossary ..................................................................................................................................................90
DHCP（Dynamic Host Configuration Protocol）................................................................90
DSP（Digital Signal Processing）..........................................................................................90
RTP（Real-Time Transport Protocol）..................................................................................90
DTMF（Dual Tone Multi-Frequency）....................................................................................91
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Speech CODEC ............................................................................................................................92
Echo Cancellation........................................................................................................................92
MGCP (Media Gateway Control Protocol) .............................................................................93
MGCP Call Agent .........................................................................................................................94
401/402 Response Code.............................................................................................................95
NTFY................................................................................................................................................95
SIP (Session Initiation Protocol)..............................................................................................95
Proxy.............................................................................................................................................100
Registrar.......................................................................................................................................100
Registration Expire(s)...............................................................................................................100
DNS (Domain Name System, or Service or Server）........................................................100
PPPoE（Point-to-Point Protocol Over Ethernet）............................................................100
Time Server .................................................................................................................................101
Caller ID Detecting.....................................................................................................................101
SNMP (Simple Network Management Protocol) ................................................................101
UDP Port.......................................................................................................................................102
SNMP Trap...................................................................................................................................102
NAT（Network Address Translator or Translation）.......................................................102
SDP (Session Description Protocol).....................................................................................102
STUN（Simple Traversal of UDP over NATs）..................................................................102
RADIUS（Remote Authentication Dial In User Service）...............................................103
RADIUS Server ...........................................................................................................................103
Signal Gain ..................................................................................................................................103
Line Impedance..........................................................................................................................103
Signal Mode.................................................................................................................................104
Jitter Buffer .................................................................................................................................104
RTP Payload Type .....................................................................................................................104
SID ( Silence Information Description).................................................................................104
Voice Proxy .................................................................................................................................104
Symmetric RTP...........................................................................................................................105
Kernel............................................................................................................................................105
SDP（Session Description Protocol）................................................................................105
G.723.1 Voice CODEC...............................................................................................................105
TOS (Type of Service)...............................................................................................................106
T.38 Standard Fax Protocol.....................................................................................................106
Redundancy Frame ...................................................................................................................106
V.21................................................................................................................................................106
NSF（Nonstandard facilities）...............................................................................................106
Request Line ...............................................................................................................................107
Via ..................................................................................................................................................107
Border Agent...............................................................................................................................107
RC4 Algorithm ............................................................................................................................107
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1
PRODUCT
INTRODUCTION
Overview
GT8 is a multi-purpose VoIP gateway product series designed with
the needs of service providers and enterprises in mind. With GT8
gateways, service providers can provide telephony and fax services
to subscribers using many access methods such as FTTB, HFC, and
ADSL. Enterprises can use the GT8’s traditional PBX interface to
implement voice VPN solutions with their private IP or public VPN
networks. GT8 can also serve as a remote SIP terminal for IP-PBX
solution.
GT8 has a variety of models. Each model can be customized to
have different number of FXS ports and FXO ports. It shares the
same software system as other GED’s VoIP products (GT48 and
GTT) and therefore keeps the advantages in functionality, quality,
and compatibility of GED products. In hardware GT8 uses Motorola’s
MPC852 as the Central Processing Unit, and TI C5509 high
efficiency chip to process voice and faxes. The powerful hardware
equipment ensures GT8 to send signaling and IP packets in different
channels even when traffic is at the peak, thus supports major
functions such as voice codec (G.711, G.729A, G.723.1, GSM and
iLBC) and echo cancellation.
This manual is mainly about GT8 installation and web configuration.
Please note that after you have made changes to many of the
parameters on GT8 Web Configuration page and clicked the Submit
button, you may get messages like “Submission is successful. Please
PRODUCT INTRODUCTION
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restart the system to make the changes effective.” You need to
restart GT8 using the instruction in Restart gateway.
GT8 also has the capability to restore the default settings. Just click
the Restore Default button.
GT8 configuration parameters have brief descriptions. To find out,
just point your mouse over the parameter.
Features
GT8 has the following features:
•It supports SIP/MGCP protocols
•It supports route selection (it can route a call or direct it to the
internet according to the called number)
•It supports RADIUS based CDR protocol
•It supports gain adjustment to FXS/FXO ports
•It supports the intrusion into NAT through a STUN server
•It supports traditional terminal devices, including phones, fax,
and PBX
•It supports a variety of supplementary services such as All
forward, Forward No Answer, Forward Busy Line, Call waiting,
and Distinctive Ring, etc.
•It can obtain static IP address or capture mobile IP address
through DHCP and PPPoE
•It supports the traditional fax service using T.30 and T.38
formats
•GT8 with FXO ports
•It supports the following sinaling protocols:
• SIP (Compliant to RFC 3261 and TISPAN)
• MGCP
•It supports the following codec:
• G.711
• G.723.1
• G.729A
• GSM
PRODUCT INTRODUCTION
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• iLBC
• G.168 Echo Cancellation
• DTMF RFC2833 and T.38
Hardware Platform
Physical
Figure 0-1 GT8 Front View
①Reset button (RST)
②Power indicator (PWR). If lit, power is on
③Ethernet port indicator. If lit, it is in operation
④FXS/FXO indicators. The port number is lit
when in use
Figure 0-2 GT8 Rear View
PRODUCT INTRODUCTION
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①Power plug-in
②10/100 baseT Ethernet port
③FXS/FXO ports, a total of 8
Table 0-1 GT8 Configuration Options
RJ11 Port Configuration
Model
Number 1 2 3 4 5 6 7 8
GT8-4S FXS1 FXS2 FXS3 FXS4 Null Null Null Null
GT8-8S FXS1 FXS1 FXS3 FXS4 FXS5 FXS6 FXS7 FXS8
GT8-/4 FXO1 FXO2 FXO3 FXO4 Null Null Null Null
GT8-4S/4 FXS1 FXS2 FXS3 FXS4 FXO1 FXO2 FXO3 FXO4
System Specifications
Table 0-2 GT8 Specification
Specification
Internal Memory 32MB
Flash Memory 4MB
On-hook Battery -56V
Off-hook Battery -24V
Ringing Voltage 60V
REN Equivalence 5 for short loop ( 1000 feet), 3 for long loop (5000
feet)
Loop Current = or > 21 mA
Loop Resistance Up to 188 Ω
Surge Voltage Level two surge protection. Can stand up to 1000V
(10/100uS) power surge
Max Line Length 1500 m
Off-hook Detection Loop Start
Dialing DTMF
Input Voltage 12V DC
Input Current 1.5Amp (Max)
Power Consumption 15Watt (Max)
Operation Temperature 0 ~ 40°C
Non Operation
Temperature –25 ~ 70°C
Operation Humidity 5 ~ 95% (Non Condensed)
Dimension (H×L×W) 300x190x45 mm
Weight 800g
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