VoIP

Key terms about VoIP

H.323

SIP

CODECs

G.711

G.729

G.723

FXS and FXO

Gateway

T.38 FAX

These are what

everyone talks about

What is VoIP…the technology

• Voice over IP (VoIP) samples 10 – 60ms of voice with an Analog-to-Digital conversion process (CODEC). This is similar to the way the phone company does it today with PCM (Voice over T1/E1).

• These samples are placed into an IP packet and sent over the network.

• A far-end device reassembles the voice stream on the other side.

IP Network

Internet

VoIP

Gateway

Analog or

Digital voice

circuit

VoIP

Gateway IP Packets with Voice Samples

Analog or

Digital voice

circuit

Typical VoIP System Elements

IP Network

PSTN

Terminals

IP Phone

Multimedia PC

Gateways

• PSTN, ISDN

• V5, SS7

Softswitch

• Gatekeeper

• Call-Manager

• Softswitch

• Network-Server

• Network Interworking

• Signaling Conversion

• Media Conversion

• Packetization and reassembly

• ISDN, PSTN, V 5.2, SS7

• Client Registration

• Authentication

• Status

• Number Mapping

• Accounting

• User Interaction

• Dial-tone, Ringtone, etc

• Registers with Call Control

• Media Conversion

VoIP Technology: Media Standards

G.711

G.726

G.729

G.723 @ 6.3

GSM-EFR

Comments

Toll quality, full rate, lowest delay

Free: good compromise

Licensed: best compromise

Licensed: low bandwidth

For Reference: mobile phones

Codec Codec

Rate

[kb/s]

64

16 - 40

8

6.3

12.2

IP BW/Call

one way

[kb/s]

96

32 - 56

24

17

-

Recommend G.711 if no bandwidth limitations apply!

Toll Quality

Low Delay

Best all around!

Packet

Length

[ms]

10/20

20

20

30

Various CODECs are used for voice compression:

Fax over IP: watch out for this

1) Fax Relay, T.38

IP

A/D D/A

Fax Bypass, T.30 Fax over G.711, 96Kb

Fax-Relay, T.38 packets

2) Fax Bypass, G.711

T.30 Fax T.30 Fax

The Fax tones are terminated in the gateway, relayed in packet form and re-modulated at the far end. + Uses less bandwidth + Is reliability(offers redundancy) - Is less interoperable

The Fax is carried in a G.711 voice channel just like a regular phone call. + Is interoperability with any gateway - Uses more bandwidth

- Is less reliability

Signalling Standards Snapshot

Signaling protocols defines how VoIP equipment communicate to actually

set-up, establish and release telephone calls over IP networks. For

example – Ring, Talk and Hang-up.

H.323

The oldest and most widely supported call control protocol.

Current Version is v4 (we support it now!)

Is actively enhanced by the international standards community

Offers the most interoperability between 3rd party equipment.

Business focused

SIP

The newest of the call control protocols

IETF (Internet based); looks like html; most extendable

Messaging for all types of user devices (phones, PC, GSM)

Carrier/CLEC focus

We support it today!

MGCP

Oriented towards softswitch carrier architectures

Focuses on the central site over CPE

Supported in SmartNodes today!

VoIP Terms Defined (1)

Softswitch

Call control and route server in a VoIP network providing user AAA services and intra-network call switching. This is Independent of the VoIP protocol (H.323, MGCP, SIP).

Gatekeeper (GK)

H.323 specific term. The GK is responsible for the management of the users (clients) and gateways in his H.323 area (zone). Implemented as software on a server or integrated as a function in a Gateway.

Gateway (GW) (This is what SmartNodes do!)

Signaling or Media-Gateway (may be combined in one equipment) provides conversion between different networks-protocols or technologies.

H.323 Client

Terminal in an H.323 network. IP-Phone or Soft-Phone (e.g. NetMeeting).

AAA

User Authentication, Authorization, Accounting. Required functions for a commercial VoIP Service. Carrier centric and provided by Gatekeeper.

VoIP Terms Defined (2)

RAS

Registration Authentication Status: H.323 Sub-protocol used to register “log-in” an

H.323 Gateway or Client at the Gatekeeper

SIP User Agent

SIP Equipment or software representing an end-user. The user agent includes a a

SIP client (to initiate calls) and SIP server (to terminate calls). This is “inside” a

SmartNode gateway.

SIP Network Server

SIP Equipment or software in the network required to register and localize User

Agents and their end-users. A SIP Network Server can operate in redirect or proxy

mode. This is a server box routing calls.

Telephony Terms

THESE YOU HAVE TO KNOW!

BRI, S0, S/T 2 B + 1 D channel > 2 voice connections

E1, PRI, S2m 30 B + 1 D channel > 30 voice connections

T1, PRI 23 B + 1 D channel > 23 voice connections

FXS “phone jack”, 2-wire POTS interface

FXO “line jack”, 2-wire POTS interface

Switch

NT BRI/PRI

TE

FXO

2-wires

4-wires 4-wires

FXS

2-wires

Switch

FXS FXO

IP

ISDN

POTS

TE

IP

NT

Building Blocks for QoS (2)

A Shaper can limit a Traffic Class to a defined bandwidth

Frees Bandwidth for real-time (voice) traffic without packet loss

Improves the Performance of interactive Applications

Very usefull for short connections e.g Web requests

WWW SH

For Example: Traffic Shaping

max

Data Burst

Web-Page

voice

unused

Data Burst

Web-Page

voice

unused

Data Burst

Web-Page

max

t t

Bandwidth Bandwidth

The integration of QoS Router and VoIP Gateway makes things

much easier

• Traffic Classes are defined at network interfaces

• No tagging necessary for point-to-point links

• Optimal bandwidth usage and control

LAN LAN WAN Link

Q

GW

Q

GW

Classification

Conditioning

Marking

Smart combination of QoS and VoIP

Products

Patton VoIP products

SIP ATAs SmartLink

4020 Series

Multiport FXS/FXO

VoIP Gateways SmartNode 4110 Series

SIP Phones SmartLink 4050

Multiport FXS/FXO

VoIP Routers SmartNode 4520 Series

Modular VoIP Routers SmartNode 2000 Series

Multiport ISDN

VoIP Routers SmartNode 1000 Series

SIP IP PBX SmartLink 4520

Up to 200 Extensions

Voice Mail, voice to e-mail

Web Configured

Multiport FXS/FXO

SyncSerial VoIP IADs SmartNode 4830 Series

Multiport FXS VoIP GWs SmartNode 4900 Series

SOHO ISDN

VoIP Router SmartNode 4552 Series

New Products: SmartNode™ 4110 Series

• SN4112, SN4114, SN4116, SN4118

• 2-8 port analog VoIP Gateway

• 2/4/6/8 2-wire FXS ports

• 2/4 2-wire FXO ports

• 10/100bTx Ethernet LAN connection

• Console Port: RS-232 RJ45

• QoS support

• TOS, DiffServ

• 802.1p

• PPPoE client, DHCP client

• Memory 32MB SDRAM / 4MB Flash

• Integrated or external universal power

supplies

• 100-240 VAC (50/60 Hz)

• Desktop Chassis

• CE mark, EN 60950

FXS/FXO ToIP Media-Gateway

When to use...

Use the SN4100 series to

integrate analog terminals –

phones and PBXs – in to VoIP

networks

SmartNode™ 4520 Series

• SN4112, SN4114, SN4116, SN4118

• 2-8 port analog VoIP Gateway

• 2/4/6/8 2-wire FXS ports

• 2/4 2-wire FXO ports

• Dual 10/100bTx Ethernet LAN/WAN

• Console Port: RS-232 RJ45

• Full QoS support

• TOS, DiffServ, 802.1p

• Traffic Management

• Full featured IP-Router

• NAT/PAT, PPPoE, DHCP, ACL,

QoS

• Memory 32MB SDRAM / 4MB Flash

• Integrated or external universal power

supply

• 100-240 VAC (50/60 Hz)

• Desktop Chassis

• CE mark, EN 60950

Dual Ethernet ToIP Router-Gateway

When to use...

Use the SN4500 Series as an

CPE Access Gateway for analog

voice and data on any

broadband access; Cable, DSL

or WLL

NEW: SmartNode™ 4552

10/100 Ethernet WAN For universal connectivity to DSL, Cable, WLL or Fiber uplinks

4 port Ethernet Switch 10/100bTX For SOHO LAN connectivity. Connect PC, Printer, WiFi Bridge without extra hub or switch

2 ISDN BRI/So ports Insert the Gateway between your installed ISDN Terminals and the ISDN NT for simple installation and universal call routing

Life-Line Bypass A bypass Relay connects the local ISDN port directly to the fallback line in case of power failures.

The SmartNode™ 4552 is a Voice over IP CPE for ISDN BRI/So users. It

combines a feature rich Broadband Access Router with advanced Quality of

Service features and high-quality VoIP for ISDN Terminals.

SmartNode™ 1200 / 4552 Typical Installation

Example of an Installation with a DSL Access

Splitter DSL Modem

ISDN NT

Copper

Ethernet

10bT

ISDN S/T

Internet Access

VoIP Access

ISDN Fallback

ADSL Annex B

SmartNode™ 1400

When to use...

Use the SN1400 for dual ISDN

BRI PBX networking or LAN

gateway. Stack for n x BRI.

Integrated Broadband Access Router

and VoIP Gateway

• 4-Channel VoIP Gateway

• 2 ISDN BRI NT/TE configurable

• Lifeline: Bypass switch between BRI

Ports

• LAN/WAN: 2 x 10bT Ethernet

• Console Port: RS-232 RJ45

• Full featured 10 Mb/s Broadband Access

Router

• NAT/PAT, ACL/FW, PPPoE, DHCP,

QoS

• CPU Motorola MPC850 @ 50 MHz

• Memory 16MB SDRAM / 4MB Flash

• Integrated universal power supply

• 100-240 VAC (50/60 Hz)

• Desktop and Wall-mount Chassis

• CE mark, EN 60950

• Optional Line Power with PM-BRI-ext

SmartNode™ 1400/4634 Typical Installation

Example of an Installation for PBX Networking with 4

simultaneous VoIP calls

Data Network

PSTN

Site A Site B

VoIP Network

DSL Modem

2 x ISDN S/T

SmartNode™ 2300

Up to 60 VoIP channels (2xPRI)

10/100bT LAN

10bT WAN or DMZ

X.21/V.35 Serial WAN port

3 PMC Expansion slots

ISDN PRI, BRI and FXS ports with respective

Interface Cards

Full featured 10Mb/s Wire speed routing

NAT/PAT, ACL/FW, DHCP, PPP, FR,

QoS

CPU Motorola MPC860 @ 50 MHz

Memory 16MB SDRAM / 8MB Flash

Internal power supply: 100-240 VAC (50/60

Hz)

19” 1HU Desktop or Rackmount chassis

• CE mark, EN 60950

• Optional Line Power with PM-40V-int

When to use...

Use the SN2300 with up to 60

VoIP channels as enterprise

CPE or PBX networking

gateway

Modular Serial/Ethernet Access

Router and VoIP Gateway

SmartNode™ 2300 Interfaces

3 Interface Card Slots

• PMC Format

• PCI (packet) interface

• PCM (circuit) interface

ETH 0/0

Ethernet

10baseT

WAN or DMZ

Console: RS-

232, RJ45

Serial 0/0

X.21, V.35

WAN port for

PPP, FR

Router

ETH 0/1

Ethernet

10/100bTX

LAN

Data Access Voice Access

SmartNode™ 2400

Up to 120 VoIP channels (4xPRI)

Dual 10/100bT LAN/WAN

Full featured 100Mb/s Wire speed routing

NAT/PAT, ACL/FW, DHCP, PPPoE

CPU Motorola MPC750 @ 333 MHz

Memory 32MB SDRAM (upgradable) /

8MB Flash

19” 1HU desktop or rack-mount alu-

chassis

Internal power supply: 100-240 VAC

(50/60 Hz)

• CE mark, EN 60950

• Optional Line Power available with power

module: PM-BRI-ext When to use...

Use the SN2400 with up to 4 IC-

E1V/T1V and 120 VoIP

channels as CO gateway

Modular Ethernet Access Router and

VoIP Gateway

4 Interface Card Slots

• PMC Format

• PCI (packet) interface

• PCM (circuit) interface

SmartNode™ 2400 Interfaces

Console: RS-

232, RJ45

ETH 0/0 and 0/1

FastEthernet

10/100bTX

LAN or WAN

SmartNode™ Interface Card IC-E1V

30-channel VoIP Gateway Card

1 ISDN PRI E1, S2m port

NT or TE configurable

Full Codec and Fax over IP support

G.711, G.726, G.729, G.723

T.38 Fax-Relay

G.711 Fax-Bypass

Echo Cancellation, DTMF Relay

PMC standard form factor

No E1 data on this card

ISDN Primary Rate interface

Card for SmartNode 2000

Series

When to use...

Use the IC-E1V for PBX

networking in a CPE or as

concentrator port in the CO

gateway.

Use up to 2 in 2300 and 4 in

2400

SmartNode™ Interface Card IC-T1V

24-channel VoIP Gateway Card

1 ISDN PRI port

NT or TE configurable

Full Codec and Fax over IP support

G.711, G.726, G.729, G.723

T.38 Fax-Relay

G.711 Fax-Bypass

Echo Cancellation, DTMF Relay

PMC standard form factor

Signaling ISDN NI-2

ISDN Primary Rate interface Card for

SmartNode 2000 Series

When to use...

Use the IC-T1V for PBX

networking in a CPE or as

concentrator port in the CO

gateway.

Use up to 2 in 2300 and 4 in

2400

SmartNode™ Interface Card IC-4BRV-8V

8-channel VoIP Gateway Card

4 ISDN BRI, So, S/T ports

configurable NT/TE

• Configurable pt-pt / pt-mpt

Full Codec and FoIP support

G.711, G.726, G.729, G.723

T.38 Fax-Relay

G.711 Fax-Bypass

Echo Cancellation, DTMF Relay

PMC standard form factor

Optional Line Power with PM-48V-int

4 Port ISDN Basic Rate interface

Card for SmartNode 2000 Series

When to use...

Use the IC-4BRV-8V ISDN BRI

PBX networking with call routing

and local PSTN breakout.

SmartNode™ Interface Card IC-4FXS

4 Port FXS Interface Card for

SmartNode 2000 Series

4-channel VoIP Gateway Card

4 Euro POTS ports

2-wire FXS loopstart

Full Codec and FoIP support

G.711, G.726, G.729, G.723

T.38 Fax-Relay

G.711 Fax-Bypass

Echo Cancellation, DTMF Relay

PMC standard form factor

Requires power module PM-48V-int to be installed inside 2300 or 2400 for line and ring power

When to use...

Use the IC-4FXS for analog

phones or PBX systems at the

CPE

SmartNode™ 4960

It is not modular!

1E1

4E1

VoIP license from 15 to 120 channels

PROMOTION UNTIL END OF OCTOBER:

You pay one and we give two

VoIP Applications

IP Telephony in the LAN

Enterprise networking with VoIP

Multi-Service Carrier Access

Applications in the Provider Market

Multi-Service Broadband Access

Bind Customers through Service

Differentiation

Bind Customers with Bundled Services

Cut Operation Costs through Converged

Service Delivery

PSTN

Provider Backbone

Internet

Services

Application

Services

Voice

Services

Customer Networks

SmartNode

Customer Premises

Gateways

WLL

xDSL

CATV Leased Lines

BB Access

PowerLine

Applications in Enterprise Networks

Global Enterprise Communications

IP Network

Internet

PSTN

Main Office Branch Office

• Cut WAN costs in office to office communication

• Long distance and international toll bypass

• Telephony integration of Home Offices

• Telephony integration of remote branches

SmartNode SmartNode

PBX Extensions

Ethernet LAN

PBX Networking Installation (1)

Equipment

• SmartNode 2300 with 2 x IC-4BRV

• SmartNode is used as Gateway, Router and Switch

• 100bT LAN

• Serial WAN

Site A Site B

TVA PBX PSTN

4 x BRI

4 x BRI

2 x BRI 2 x BRI

100bTX

leased line

X.21 X.21

PBX Networking Installation (2)

Customer Benefits

• Interoffice Toll Bypass based on legacy PBX installation

• Telephony, Internet Access and VPN with a single device

SN4528 SN4114

SN4526

IP/WAN/VPN

WWW 8-lines 4-lines

6-lines

PLAR – Private Line / Hot line

Customer Benefits

• Toll free hotline service over existing Data network Infrastructure

• Connectivity on any IP network

SN4114 SN4114

IP/WAN/VPN

WWW

Enterprise Home Office PBX Extension

Main Office

LAN

Gatekeeper

Public Gateway

SN1400

PBX

Router

NAT

Firewall

Internet

PSTN

Home Office

BRI

BRI

Modem

Modem

2 xBRI

5 xBRI

SN1200

Enterprise Opportunity Analysis

Multiple PBXs at different sites

The sites are already connected to the Internet with sufficient bandwidth (50 to 100k per voice connection), or a

connection can be established easily. (e.g. Leased Lines, DSL, Cable Modem, Laserlink, WiFi etc.)

Remote

Offices without

PBX

The PBXs are already

networked using QSIG

The PBXs are not networked. Calls

between sites go through the PSTN

SmartNode Solution: toll

bypass over IP. Save on

the monthly telefone bill.

SmartNode Solution:

QSIG networking over

IP. Save the cost of

dedicated leased lines.

SmartNode Solution :

remote sites are served

as IP extensions of the

central PBX.

Check if it is a SmartNode Opportunity?

Home Office

Access to

central PBX

Condition

Requirement

Environment

Solution