SG2001_VIP.ppt Page 1 PLANET Technology Corp. Product Guide 2001 VoIP Products Your Voice over Internet By Product Department.

SG2001_VIP.ppt Page 1

PLANET Technology Corp.

Product Guide 2001

VoIP ProductsYour Voice over Internet

By Product Department


The VoIP Products

• Product Range• Product Position• About the Telephony Gateway• Deeper Look at the how it works


Product Range

• Enterprise Solutions

• Choice for SOHO Users


Enterprise Solution

• VIP-000– 2-slot Internet Telephony Gateway– Modules

• VIP-FXO: Foreign Exchange Office

• VIP-FXS: Foreign Exchange Station

• ISDN Line Module

• VIP-SGK– Remote Authentication System– Handle up to 48 Internet Telephony Gateway


VIP-0002-slot Internet Telephony Gateway

• 2-slot for module connectivity– Up to 8 channel simultaneously– Choice of modules, flexible in installation

• Management– Telnet/ Web manageable– Local Dial phone book– Hunt Group Support– Hot line support


SOHO Solutions

• VIP-200– 2-port Internet Telephony Gateway– 2-port FXS interface for direct analog devices

• VIP-400– 4-port Internet Telephony Gateway– 2-port FXS interface for analog devices– 2-port FXO interface for PBX/ PSTN


Product Positioning

• VIP-000 is suitable for Small to Middle sized enterprise– 8 lines can direct connect to local PBX sharing all your

phone users

• VIP-200 is suitable for Small Home Users or Remote Branches– One phone set/ One Fax machine

• VIP-400 is suitable for Small offices & branches– Phone set and Fax machine– PBX and PSTN


About the Telephony Gateway

• Concept about VIP-xxx• Benefits• Key Features• About FXO and FXS• Applications

– Installation– How to make calls– How to receive calls


Concepts of the Gateway

• The VIP-xxx is a device that convert/revert your analog voice into/from digital data

• Transfer you voice data through Internet

• Requirements– The Internet Telephony Gateway– Ethernet Networks and Router(s) to the Internet– Your existing telephone system

• Standards, H.323– The standard provides a foundation for audio, video, and

data communications across IP-based networks, including the Internet


The Benefits

• Lower the PSTN cost, especially the International call

• Plug and Call• Cooperate with existing phone system

• Cooperate with the TCP/IP networks and widely used OS, the Windows System

• Do not have to change the behavior of having a call


Key Features

• Up to 8 Analog port for up to 8-channel in one time

• Choice of FXO or FXS modules for flexible installation

• 10/100Mbps UTP port for LAN installation

• Support ITU 729A/B, G723.1 G.711 for most popular ITG services in the market

• H.323 protocol stack compliant for Internet Telephony Applications like NetMeeting, Web Phone, etc.


Key Features –ctd.

• GateKeeper Support for advanced management

• HTTP engine for web-browser management

• Flexible Dial Plan for speed dialing• Voice Processing

– Voice Activity Detection (VAD)– Comfort Noise Generation (CNG)– Hybrid Echo Cancellation (HEC)– Voice /FAX detection (T.38 fax support)


About the two InterfaceFXO & FXS

• About the two– FXO: Foreign eXchange Office– FXS: Foreign eXchange Station

• FXO accepted connections– PBX internal line– PSTN line

• FXS accepted connections– PBX external line – KTS

• Like analog phone set / Fax machine

FXO

FXS


Application –1 (FXS to KTS)Topic: Pure Internet Phone System for Small Office

• With FXS installed, up to 8 KTS (Key Telephone System) come to 8 Internet Phones

FXS

Internet Phone Service provider

VIP-200/400


Application –2 (FXS to PBX) Topic: Pure Internet Phone System for Mid-Sized Office

• With FXS installed, up to 8 lines can connect to the existing PBX external line for pure Internet Call


FXS


Application –3 (FXO to PBX) Topic: Pure Internet Phone System for Mid-Sized Office

• With FXO installed, up to 8 lines can connect to the existing PBX internal line for pure Internet Call


FXO


Application –4 (FXO to PSTN) Topic: Pure Internet Phone System for Mid-Sized Office

• With FXO installed, up to 8 PSTN lines can connect to the Telephony Gateway for pure Internet Call


FXO


How it works to call out - 1 Example to have a Dial base on Application 1

– Store the IP Address of Branch 1 to VIP-000, say Region 1 with number “1”

– Setup the Phone number of each phone number in this branch, say from 1 to 8.

– Pick up any phone in Headquarter and press “11”

– The VIP-000 will find and contact with the ITG in branch and check the number “1”

– Phone 1 in branch then “Rings”

FXS

HQ

Branch 1


How it works to call out - 2 Example to have a Dial base on Application 3

– Store the IP Address of Branch 1 to VIP-000, say Region 1 with number “1”

– Setup the Phone number of each phone number in this branch, say from 1 to 8.

– Pick up any phone in Headquarter and press, extension number for ITG, then press “11”

– The VIP-000 will find and contact with the ITG in branch and check the number “1”

– Phone 1 in branch then “Rings”

HQ

Branch 1

FXO


How it works to accept a call - 1 Example to receive a call base on Application 2

– Store HQ’s IP to Branch’s IGT say Region 1

– Prefix the Region 1 with number “0” , I.e. record phone 1 to 8 in HQ with “01”, “02”...

– In HQ, setup a port 1 accept “1”, 2 for “2”, etc.

– Pick up the phone in branch and dial number “0106” or “0206”

– Extension 106/206 in HQ then rings to indicate a call.

HQ

Branch 1

FXS


How it works to accept a call - 2 Example to have a Dial base on Application 4

– Store HQ’s IP to Branch’s IGT say Region 1

– Prefix the Region 1 with number “0” , I.e. record phone 1 to 8 in HQ with “01”, “02”...

– In HQ, setup a port 1 accept “1”, 2 for “2”, etc.

– Or setup the phone number according to the area. For example, port 1, set as area code 1, and/or the accepted number 1-8574195

– Pick up the phone in branch and dial number “018574195”

– ITG will call out use number 8574195

HQ

Branch 1

FXO


How it works to accept a call - 3 Example to have a Dial from H.323 Application

– Store the number in HQ’s ITG.

– In a H.323 application like Microsoft NetMeeting, set up the H.323 gateway to the IP of the ITG in HQ.

– Have a call through the gateway base on the phone number stored in the ITG

– The recipient's phone should rings after the PC connect to the ITG through Internet.

HQ

FXO


Have a deeper lookSome Information for understanding the Gateway

• Voice Construction and transmission

• Voice quality Issue– Voice Codec– Delay– Jitter– Echo– Packet loss

• Some advanced setting for VIP-xxx


Voice construction / Transmission

• Analog Voice to PCM– Analog voice record from the MIC of the phone set– The analog converted PCM digital stream

• PCM Processing– Echo remove– VAD remove silence– Forward to CODEC

• PCM Transfer to Frames– PCM stream fed into CODEC and frames created– Also compress PCM stream follow algorithm

• G.729a/b: 8Kbit per second, G.723: 5.3/6.3Kbps

• Frames to Packets• Packet addressing and forwarding


Voice Quality IssueVoice Codec

Codec MIPS Frame timeG.723.1* 17 30 msG.729A 12 10 msG.711 2 125 us

0.5

0

1.5

1.0

2.5

2.0

3.5

3.0

4.5

4.0Mean O

pinion Score

kps 5.3 6.3 8 64

G.723.1(5.3 kbps)

G.723.1(6.3 kbps)

G.729A G.711

* IEEE Comm. 9/97


Voice Quality IssueDelay

GatewayGateway

90 ms90 msOne-WayOne-Way

VoiceVoice AccumulationAccumulation Voice & Voice &

Protocol ProcessingProtocol Processing

TransmissionTransmissionQueueingQueueing

Protocol ProcessingProtocol ProcessingJitter RemoveJitter Remove

Voice ProcessingVoice Processing

5 ms5 msPropagationPropagation

IP NetworkIP NetworkPSTNPSTN


Voice Quality IssueJitter

ITG implements adaptable play-out buffer:• Dynamic buffer size• Large jitter buffer for fax

1IP

Network

234 1324

Variations in packet inter-arrival rate• Changes in IP network load• Variation in routing paths• Variable queuing delays

1234


Voice Quality IssueECHO Cancelation

• 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.

Echo

Hello

Hello

Central Office Switch

2 wirelocal loop

4 wiretrunks PBX

4 wiretrunks


Voice Quality IssuePacket Loss

ITG compensate the lost packet by replaying once or twice the last frame received during the interval when the lost packet was supposed to be played out.

1

IP Network

234561

2

34

5

6

1

1

34

4

6


Some Advanced Setting of VIP-xxx

• PLAR (Private Line Auto-Ring down)– Set tcid n dial_in plar Destination

• Ring Frequency– Tel set ring_freq n– Tel show ring_freq

• Coding– Show coding n– Set coding n parameters

• Future Product enhancement– Impendance adjustable– Dynamic DNS


Thank you!

SG2001_VIP.ppt Page 1 PLANET Technology Corp. Product Guide 2001 VoIP Products Your Voice over Internet By Product Department.

Documents

internet slide

fax support slide

phone users vip

product department slide

pbx pstn slide

product positioning

telephony gateway concept

fax machine vip