linkpro voip gateway prepared by sales & marketing department toplink c&c corporation
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LinkPro VoIP Gateway
Prepared by Sales & Marketing DepartmentTOPLINK C&C CORPORATION
• New Market Segments- Enterprise - ISP/ITSP/TSP
- SOHO
• VoIP Market Potentials- 90% of enterprise expected to move
to IP-based systems within five years (Phillips Group)- Current economic conditions discourage
major capital investment- VoIP minutes will be increased from 1.5
Billions to 128 Billions in Year 2005 (Probe Research)
VoIP Market Trends
• The fundamental shift towards voice over IP has begun both in the enterprise and public network
1999 offers a unique milestone - For the first time in history, more data moved through
the public network than voice• In 1999, over 2 Billion minutes of voice traffic was carried
across IP network & it’s doubled every 2 - 3 months. • By 2002, the worldwide market for VoIP equipment is expected
to exceed $3 Billion
Source: Intel Dialogic Executive Summit 2000
Evolution to IP Telephony
VoIP Market Maturity
VoIP Market Trends
Market Sizing – Gateway Market• IP Telephony Forecasts ( Million Units)
3.3
9.08
21.03
108.81
70.15
40.7
1.34
0 25 50 75 100 125
2000
2001
2002
2003
2004
2005
2006
Source : Frost & Sullivan
• IP Based Network PlatformIP Based Network Platform
– Open Standard, scalable & device independent.Open Standard, scalable & device independent.
– Enable Next Generation Telephony Services with Integrated Enable Next Generation Telephony Services with Integrated
multimedia Services, Data, Voice, & Video.multimedia Services, Data, Voice, & Video.
• Open Services Creation on a single infrastructure, Open Services Creation on a single infrastructure,
easy to deploy & manage.easy to deploy & manage.
• Real Time & mature IP Voice QualityReal Time & mature IP Voice Quality
• Cost Effectiveness, deployment & operationCost Effectiveness, deployment & operation
Why VoIP ?
Circuit vs. Packet SwitchingPublic Telephone
NetworkIP Network
Circuit Switched Packet Switched
Dedicates capacity for duration of connection
Uses available capacity inefficiently
Shares available transmission capacity among all users
More efficient utilization of capacity
TDM vs. IP Based
• The conventional PSTN is a highly centralized, non-distributed network, for both voice related applications
• Use IP based distributed architectures in Signaling to maximize effectiveness– Enhanced reliability and generally lower costs– Multiple IP elements can appear as a single entity to the PSTN– Flexibility to scale more closely to demands of growing
networks– Open API to value added applications
Benefits of IP Based Architecture• Scalable
– Large number of gateways– Large number of simultaneous users– Distributed access / location transparency
• Secure at all levels– Browser client may use Secure Sockets Layer
(SSL)– Database security enforces user restrictions
• Database & Device Independence• Standards
– HTTP, SNMP, etc.
VoIP - Next Generation Telephony
Key Benefits:
- Enhanced & user friendly telephony features
- Extremely lower investment associated with ownership & operation
- “Always On” & nicely integrated with IP based applications
VoIP for Next Generation Telephony
Network Convergence is the key
to new applications and services.
An An Intelligent networkIntelligent network that enables that enables
integrated telephony, data and video integrated telephony, data and video
servicesservices
PSTN
Mobile 2G
Other operator
NGN
Internet
Other operator
unbundling
SoftSwitch
Residential
Corporate
ISP
ASP/multimedia
N EXT G EN E R A TI O N N ETW O RK
Converged Network
OSS / NM
A single IP Based Infrastructure
IN Services
Trunk Gateway
Residential VoIP Gateway
Wireless VoIP Gateway
xDSL
Enterprise/CampusVoIP Gateway
PSTN
DLC/AGWDLC/AGW
Packet Network
Control Layer
Transport/Media Layer
CentralizedCentralizedControlControl
DistributedDistributedSwitchingSwitching
Value Added Services
Switch-based
Switch-based
Standalone
Standalone
Router-based
Router-based
VoIP Product Examples
VoIP Products
• VoIP Gatekeepers, Call Managers, Call Agents, & Proxy Servers.
• VoIP Gateways• IP PBX, IP Phones, & VoIP Phone Adapters• VoIP Routers• VoIP Boradband Servers
• Transmission
Optical Fiber, Leased Line, ADSL, Cable Modem, & Wireless etc..
• Networking
Routers, IP/ATM Switches, Network Protocols, & Network Management.
• VoIP Processing
Coders, Echo Cancellation, Silence Detection, & Call control, etc..
VoIP Technologies
• International E Calls• Pre-paid Cards• On Net & Off Net Calls• Follow me• Click to call via email address/host name,
location, or service type.• Integration with UMS, Call Center applications, or
Wireless services, E-Commerce/CRM applications etc..
VoIP Applications
VoIP Applications
• PSTN Related ServicesPSTN Related Services
– IP-800, IP-900, VPNIP-800, IP-900, VPN
– Single Number ServicesSingle Number Services
• Voice & Data service IntegrationsVoice & Data service Integrations
– Unified Personal CommunicationsUnified Personal Communications
– Email, wireless, PDA, voice, instant messaging, web, e-Email, wireless, PDA, voice, instant messaging, web, e-
Commerce/CRMCommerce/CRM..
• Internet RoamingInternet Roaming
• Quality of Service (QoS)/Class of Service Quality of Service (QoS)/Class of Service
• Telecomm Service Provider
Chung Hwa Telecom’s E Calls, Web to Phone, Web Hot Line (Net Version of “800”) & Voice VPN.
• Enterprise VPN Applications
Distributed PBX over Private IP network• Home VoIP Applications
IP Calls, Interactive Multimedia (Net Games).
VoIP Real Life Examples
VoIP Network Example – ITSP/ISP application
CATV NetworkHFC
PBX
PSTN
Gateway 1
Gateway 2
Building 1
ADSL
Modem
CISCO CMTS
IP Network
CISCO Gatekeeper
CISCO CS5300 GatewayISP/ITSP
PSTN
HomeGateway 5
Elite
Elite
PSTN
Gateway 4
ADSL Modem
Branch Office
Elite
Cable Modem
Enterprise VoIP Network Topology
IP Network
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Head Quarters Hsinchu
Static IP
PSTN
ADSL Router
Gateway 4
Branch Office San Jose, CA
Static IP
PSTNNAT Router
ADSL ModemGateway 5
Home Office Hsinchu
Dynamic
PSTNStatic IP
ADSL Router Gateway 6 Branch Office TaipeiPSTNGateway 6
Gateway 3
Elite Gatekeeper
Branch Office
Campus VoIP Network Topology
DormitoryLAN
CampusLAN
PSTN
FXO*24FXO*24
電話機
H.323 IPhoneH.323 IPhoneClientClient
PSTN
電話機
#1#1
#3#3
RouterRouter
FXO*24FXO*24
#2#2
Elite ATS #3Elite ATS #3
101101
102102
103103
104104
499499
500500
#1#1FXSFXS
FXSFXS
FXSFXS
FXSFXS
#50#50
FXO*48FXO*48
Hub/RouterHub/Router
EliteElite
EliteElite
#51#51EliteElite
#56#56EliteElite
100Base-T100Base-T
Elite ATS #1Elite ATS #1
Elite ATS #2Elite ATS #2
FXSFXS
FXSFXS電話機
電話機
電話機
電話機
電話機
電話機
900 (Hunt Group)900 (Hunt Group)
AnalogAnalogPBXPBX
HQ ZoneHQ Zone
DormDormZoneZone
100Base-T100Base-T
VoIP Network Manager
VoIP Benefits – Service Providers
• Mature voice processing & IP based technologies
• New broadband infrastructure• Network convergence and Next Generation
Networking (NGN)• Cost effective network deployment, operation, &
network management• Efficient integration with emerging advanced
applications and services, E-commerce/CRM applications etc..
VoIP Benefits – Enterprise
• Toll Quality Voice/Fax over IP based VPN or Public Network
• Tremendous Savings in monthly phone bills both domestic and oversea long distance
• Coexist with enterprise PBX for convenient system growth and ease of management
• Distributed PBX and extension numbers to remote offices, branch offices, & home offices anywhere
• Integration with enhanced & value added services
VoIP Product Selections
• Performance/Cost criteria• Standards conformation• Voice Processing• Features and Mode of operation
Standards Conformation
• H.323, SIP and MGCP/Megaco/H.248.• HTTP• SNMP• PSTN Interfaces
Voice Processing
• Voice coders: G.711,G.723.1 and/or G.729A/B.
• Real Time FAX, T.30 and T.38. • VAD and CNG• Echo Cancellations• Issues with Packet Loss, Latency, &
Jitters
VoIP Quality Issues
• Voice codec
• Delay
• Jitter
• Echo
• Packet loss
• DTMF and CPT detection/transport
Delay
IPNetwork
Transmit delay• Accumulation• Voice processing• Protocol processing
Network delay• Transmission• Queuing
Receive delay• Protocol processing• Jitter removal• Voice processing
Delay (Cont’d)
0%
10%
20%
30%
% Interview
ed W
ith Difficulty
* ITU-T G.114
Round Trip Delay (ms)
0 100 200 300 400 500 600
Acceptable
Jitter
1IP
Network
234 1324
Variations in packet inter-arrival rate• Changes in IP network load• Variation in routing paths• Variable queuing delays
1234
Echo
• In telephony systems line echo heard by the speaker is caused by the reflections from hybrids which convert 4 wire circuits to 2 wire circuits.
• PSTN requires echo cancellation when round trip delay exceeds 50 ms.
Hello
Hello
Central Office Switch
2 wirelocal loop
4 wiretrunks PBX
4 wiretrunks
Packet Loss
IP Network
1234561346
25
13
46
1346
0%
5%
10%
15%
20%
25%
30%
35%
perfect excellent good acceptance annoying bad unstable
Per
cen
tag
e P
acke
t Lo
ss
Packet Loss (Cont’d)
DTMF & Call Progress Tone Transport
IP Network
Compressed voice packet
• DTMF and CP tone do not travel well across the packet network. Coding and packetization distorts and segments them, making them unrecognizable on the remote end. ITG then, must detect DTMF and CP tone locally, and optionally transport tones outside of the voice band.
• Required for reliable transmission of tones when using LBR codecs.
Decompressionengine
voice bandTone
detector
tone information packetcall control band
Compressionengine
Tone generator
Mode of operation
• Phone to Phone, PC to Phone, PC to FAX, & FAX to FAX
• Gateway mode or Gatekeeper mode
VoIP Field Tests
• Voice Codec/Fax Test• DTMF In-Band/Out-of-Band Carry Test• Compatibility Test• Network Impairment Test• Performance Test• Interoperability Test (with Cisco Gateway /
Gatekeeper)• Long Run Reliability Test• Load Test
LinkPro Product Offerings
Linkpro’s Embedded VoIP Gateways
ITG-400 ITG-400R ITG-404 ITG-404R
ITG-404S ITG-404SR
ITG-800 ITG-804 ITG-804S
ITG-808 ITG-808S
AmiGate Embedded Low-density Internet Telephony Gateway
Features
• User Interface Port Modules: Module types: i) Loop start FXO (RJ11)
ii) Loop start FXS (RJ11) iii) E&M (RJ45)
• Programmable Line Interfaces: Complex line impedance• Network Interface Ports: One 10/100 Base-T, RJ45 connector. • Voice Coders Supported: G.711, G.723.1, G.729A/B.• Fax T.30• Fax Relay T.38
• Simultaneous Connections 2, 4,or 8 channels voice/fax per gateway
• Dynamic IP support PPPoE or DHCP with DDNS
• NAT/Firewall support
• Programmable settings for PBX/CO requirements
AmiGate Embedded Low-density Internet Telephony Gateway
Features (cont’d)
• Voice Processing VAD, DTMF Detection/Generation, G.168 Echo Cancellation, Comfort Noise Generation (CNG), Call Progress Detection, Fax/Voice Detection, & Gain Control.
• Call Control Protocols H.323 (Now), SIP(4Q02), & MGCP/MEGACO/H.248 (1Q03)
• Management RS-232 Console port HTTP server allowing configuration and management through web browser
Built-in Telnet Server, & SNMP• Software Upgrades Flash memory and built-in TFTP allowing
software upgrades via IP network• Chassis 19” Rack Mountable or Desktop
Key Features• Supports gateway-to-gateway and gateway-t
o-gatekeeper modes• Supports various telephony interfaces for ph
ones, faxes, and PBXs in more than 50 countries.
• Ease of use and maintenance• Highly reliable and mature voice quality• Supports Dialing by Host Name• Supports dynamic IP (PPPoE or DHCP with D
DNS) and NAT/Firewall environment• QoS for VoIP packets• Hot line / Hunt Group support• User friendly management tools• Supports Remote Debug
Applications• Phone and real time fax• On-Net Calls• On-Net and Off-Net Calls• Off-Net Calls• Dynamic IP Environment• NAT/Firewall Environment• Hot Line• Call Center• ISP/ITSP• Enterprise• Campus
Applications – Phone/Fax
Taipei Office
IPNetwork
PSTNPSTN
Santa Clara Office
Telephone(408) 444-5555
Telephone(2) 1234-8888
90018000
Elite-1 Elite-2Router Router
FAX FAX
PBX
Applications – On-Net Calls
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Building 1
Static IP
PSTN
ADSL Modem
Gateway 4
Branch Office 1
Dynamic IP
PSTN
ADSL ModemGateway 5
HomeDynamic IP
PSTNStatic IP
ADSL Router Gateway 6 Branch Office 2PSTNADSL Router Gateway 6 Branch Office 2
IP Network
Elite
211.20.96.4
’90’
Elite‘408’
mary01.dyndns.org
mary02.dyndns.org
Elite
’10’
Elite
Applications – On-Net to Off-Net
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Building 1
Static IP
PSTN
ADSL Modem
Gateway 4
Branch Office 1
Dynamic IP
PSTN
ADSL ModemGateway 5
HomeDynamic IP
PSTNStatic IP
ADSL Router Gateway 6 Branch Office 2PSTNADSL Router Gateway 6 Branch Office 2
IP Network
Elite
211.20.96.4
’90’
Elite‘408’
mary01.dyndns.org
mary02.dyndns.org
Elite
’10’
Elite
Applications – Off-Net to Off-Net
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Building 1
Static IP
PSTN
ADSL Modem
Gateway 4
Branch Office 1
Dynamic IP
PSTN
ADSL ModemGateway 5
HomeDynamic IP
PSTNStatic IP
ADSL Router Gateway 6 Branch Office 2PSTNADSL Router Gateway 6 Branch Office 2
IP Network
Elite
211.20.96.4
’90’
Elite‘408’
mary01.dyndns.org
mary02.dyndns.org
Elite
’10’
Elite
Applications – Dynamic IP Environment
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Building 1
Static IP
PSTNADSL Modem
Gateway 4
Branch Office 1
Dynamic IP
PSTN
ADSL Modem
Gateway 5Home
Dynamic IP PSTNStatic IP
ADSL Router Gateway 6 Branch Office 2PSTNADSL Router Gateway 6 Branch Office 2
IP Network
Elite
211.20.96.4
’90’
Elite‘408’mary01.dyndns.org
mary02.dyndns.org
Elite’10’
Elite
NAT Router
Applications – Dynamic IP Environment
DDNS Name:mary02.dyndns.org
(216.94.170.66)
DDNS Name:mary01.dyndns.org
(61.155.107.86)
886
408Area 886 Area 408
DDNS
Application – NAT/Firewall Environment
IP Network
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Head Quarters Hsinchu
Static IP
PSTN
ADSL Router
Gateway 4
Branch Office San Jose, CA
Static IP
PSTN
NAT RouterADSL ModemGateway 5
Home Office Hsinchu
Dynamic
PSTNStatic IP
ADSL Router Gateway 6 Branch Office TaipeiPSTNStatic IP
ADSL Router Gateway 6
Gateway 3
Elite Gatekeeper
Mary01.dyndns.org
Applications – NAT/Firewall Environment
Johnccc01.dyndns.org
IP Network
NAT ROUTER
CABLE MODEM
747
PSTN
1-408-xxxxxxxADSL Modem
205
808X-JOHN
400-Peter
820
Ext 6
07
port
1
Ext 603
Ext 605
.
.
ACCEL-808X
211.20.96.4
FXO
PBX
FXS
ADSL Router
ADSL MODEM
61.222.156.182
200-JESSIE
61.216.127.90
WAN: 61.216.127.83Host name: jessie.dyndns.org
www.dyndns.orgDNS
Applications – Hot Line
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Building 1
Static IP
PSTN
ADSL Modem
Gateway 4
Branch Office 1
Dynamic IP
PSTN
ADSL ModemGateway 5
HomeDynamic IP
PSTNStatic IP
ADSL Router Gateway 6 Branch Office 2PSTNADSL Router Gateway 6 Branch Office 2
IP Network
Elite
211.20.96.4
’90’
Elite‘408’
mary01.dyndns.org
mary02.dyndns.org
Elite
’10’
Elite
9001 B
5678-1234
A
Applications – Call Center
PSTN
IP Network
PBX
PSTN
PSTN
Elite
Elite
Elite
Elite
Elite
Customer
ADSL Router
ADSL Router
ADSL Router
ADSL Router
Data Base
Workstation Workstation Workstation
Customer Service CenterDistributorCustomer
Bejin
Shanhai
Tokyo
HQ Hsinchu
Enterprise VoIPEnterprise VoIPEnterprise VoIPEnterprise VoIP
PBXGateway
LAN S/W
RouterElite
GW
GW
GW
PSTN
PSTN
Cisco 5300
ITSP VoIP to PSTNITSP VoIP to PSTNITSP VoIP to PSTNITSP VoIP to PSTNITSP VoIP GatekeeperITSP VoIP GatekeeperITSP VoIP GatekeeperITSP VoIP Gatekeeper
VoIP
DB
Applications - ITSP
Application - Enterprise
IP Network
PBX
PSTN
ADSL Router
Gateway 1
Gateway 2
Head Quarters Hsinchu
Static IP
PSTN
ADSL Router
Gateway 4
Branch Office San Jose, CA
Static IP
PSTNNAT Router
ADSL ModemGateway 5
Home Office Hsinchu
Dynamic
PSTNStatic IP
ADSL Router Gateway 6 Branch Office TaipeiPSTNStatic IP
ADSL Router Gateway 6
Gateway 3
Elite Gatekeeper
Applications - Campus
DormitoryLAN
CampusLAN
PSTN
FXO*24FXO*24
電話機
H.323 IPhoneH.323 IPhoneClientClient
PSTN
電話機
#1#1
#3#3
RouterRouter
FXO*24FXO*24
#2#2
Elite ATS #3Elite ATS #3
101101
102102
103103
104104
499499
500500
#1#1FXSFXS
FXSFXS
FXSFXS
FXSFXS
#50#50
FXO*48FXO*48
Hub/RouterHub/Router
EliteElite
EliteElite
#51#51EliteElite
#56#56EliteElite
100Base-T100Base-T
Elite ATS #1Elite ATS #1
Elite ATS #2Elite ATS #2
FXSFXS
FXSFXS電話機
電話機
電話機
電話機
電話機
電話機
900 (Hunt Group)900 (Hunt Group)
AnalogAnalogPBXPBX
HQ ZoneHQ Zone
DormDormZoneZone
100Base-T100Base-T
VoIP Network Manager
Interoperability Tests
• Gateway
Cisco ‘s• GateKeeper
Cisco, Intel, Lucent, RADVision, & Acer.• IP Phone
Cisco, MS NetMeeting, SYMBOL, & ACT.• NAT Router
Draytek, Dlink, Sercomm, Zerone, Ugate, & Nexland, JAHT• PBX
Alcatel, Avaya, Lucent, Nortel, Fujitsu, NEC, & Panasonic, etc..
Road Map
• New Features
PPPoE
Dynamic DNS
DHCP
H.450: Call Forward, Call Transfer, & Call Wait.
SNMP Agent
SIP Based
• New Products
Embedded VoIP NAT Router with QoS
Embedded Digital T1/E1 VoIP Gateway
Partnership Is Our Winning Strategy
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