10643_02F9_c1 © 1999, Cisco Systems, Inc. Multiservice Networking For Branch Offices.

10643_02F9_c1 © 1999, Cisco Systems, Inc.

Multiservice NetworkingMultiservice Networking

For Branch OfficesFor Branch Offices

20643_02F9_c1 © 1999, Cisco Systems, Inc. www.cisco.com

AgendaAgenda

• Multiservice Networking

• Voice over X Overview

• Voice and Video Applications

• QoS

• Cisco 2600/3600 Voice Solutions

• Case Study—Toll Bypass


Installed Base Ready for ChurnInstalled Base Ready for Churn

3 Million Access Routers

1 Million TDMs

3 Million Access Routers

1 Million TDMs

Data Driving Need for BandwidthData Driving Need for Bandwidth

Data

TrafficVolume

Voice

1998

Why Multiservice?Why Multiservice?

Customers’ Needs Changing—Fast!Customers’ Needs Changing—Fast!

Infrastructure Consolidation Infrastructure Consolidation

Data

Voice

Video

Internet


Why Packet Voice?Why Packet Voice?

• Allows network convergenceLower network capital costsPacket infrastructure cost efficiencies Lower network transport costsCompression economies, nonconsequential busy hours, single network (data and voice) volume economies

• Enable new servicesInteractive call centers, enhanced fax services, video calls, expand into new markets, voice messaging


Telecom Budget

MIS Budget

“Convergence Funding”Data Load/Traffic

( >300% Growth by 2002—Gartner Group)

PBX CostsPBX Costs

Toll and Access ChargesToll and Access Charges

IT Spending

(<10% Growth per Year—IDC)

The IT Budget DilemmaThe IT Budget Dilemma


Level of Importance

or Value

Time

ArbitrageArbitrage

TransportBenefitsTransportBenefits

Value-AddedIntegratedServices

Value-AddedIntegratedServices

Operational AdvantagesOperational Advantages

New ServiceAccess Options

New ServiceAccess Options

The VoX DriversThe VoX Drivers


AgendaAgenda




• QoS




Packet Telephony StandardsPacket Telephony Standards

Quality

Utility QualityUtility Quality

BusinessQuality

BusinessQuality

TollQuality

TollQuality

VoIPVoIP

VoFRVoFR

• VoATM

(PCM/AAL1)

• VoATM

(PCM/AAL1)

Cost per Minute

(Internet)(Internet)

(Intranet)(Intranet)

• PSTNVoice

• PSTNVoice

(Cellular)(Cellular)

VoATM(AAL5)

VoATM(AAL5)

Voice Technologies Voice Technologies


VoIP/VoFR/VoATMVoIP/VoFR/VoATM

Governing BodyGoverning Body

Voice

StandardsStandards

Over ATMOver ATM Over IPOver IP Over FROver FR

ATM ForumATM

ForumIMTCIMTC Frame Relay

ForumFrame Relay

Forum

AAL/CES

AAL2

AAl5

AAL/CES

AAL2

AAl5

H.323

RTP

SGCP

MGCP

SIP

H.323

RTP

SGCP

MGCP

SIP

FRF.11

FRF.12

FRF.11

FRF.12


Voice Packets TypeType

Header Sizes

Header Sizes

Packet Efficiency

Packet Efficiency

QoSQoS RoutesRoutes

ATMATMConnection Oriented,

Layer 2

Connection Oriented,

Layer 2

Small HeadersSmall

Headers56%56%

Can be Hard (CBR)

Can be Hard (CBR)

Fixed/KnownFixed/Known

Frame RelayFrame Relay


Layer 2


Layer 2

Small HeadersSmall

Headers

62.5% (FRF.11) 79% (Cisco VoFR)

62.5% (FRF.11) 79% (Cisco VoFR)

DeterministicDeterministic Fixed/KnownFixed/Known

IP (RTP)IP (RTP) Connection–less, Layer 3Connection–less, Layer 3

Larger HeadersLarger Headers

33% 83% (with CRTP) 33% 83% (with CRTP)

Soft—Best Effort

Soft—Best Effort

FlexibleFlexible

Packet TypesPacket Types

VoIP

ATM/FR

WAN


VoIP or VoFR—Which One?VoIP or VoFR—Which One?

• Cisco is technology agnostic: voice over IP, FR, or ATM, depending on customer requirements

• Customers with router-based backbones will gravitate to VoIP solutions

• VoIP enables interoperability with I-Phone, H.323, and other LAN-based telephony applications

• Customers with switched backbones may prefer voice over Frame Relay, VoATM solutions

• Cisco is providing end-to-end solutions for many different applications

• Analysts predict VoIP will have the most long-term growth opportunity


VoIP Gateway OpportunityVoIP Gateway Opportunity

North America

Africa/Middle East

Asia/Pacific Europe South America

Gateway Market Projections by Killen and Associates

Market Size in

Millions of Dollars


Voice over IP will be the most popular service offering, with over 60% of service providers offering it,

SP Network—Service Deployment

SP Network—Service Deployment

Workgroup Collaboration

Faxover IP

Voice over IP

Voice I-VPNs

Voice VPNs

Unified Messaging

Call Center Applications

Voice over ATM

Nonprioritized Voice over Frame Relay

Prioritized Voice over Frame Relay

Ser

vice

Percent of Respondents0 10 20 30 40 50 60 70

In 24 Months

Now

1998

Service Offerings


Multiservice Challenges and Solutions

Multiservice Challenges and Solutions

Challenge SolutionSolution

PrioritizationPrioritization QoS, IP PrecedenceQoS, IP Precedence

EchoEcho Standards-Based Echo CancellationStandards-Based Echo CancellationG.165G.165

Packet LossPacket Loss Autofill in AlgorithmAutofill in Algorithm

DelayDelay Use of Real-Time Protocol, QueuingUse of Real-Time Protocol, QueuingAlgorithms, Prioritizations, DSPs Algorithms, Prioritizations, DSPs

JitterJitter Dynamic Buffer AllocationDynamic Buffer Allocation

BandwidthBandwidthUtilizationUtilization

Use of Standards-Based VoiceUse of Standards-Based VoiceCompression, Fragmentation, and QoSCompression, Fragmentation, and QoS


Voice over Frame Relay Features of Cisco 2600/C3600/MC3810

Voice over Frame Relay Features of Cisco 2600/C3600/MC3810

• Frame Relay Forum Standards-compliant FRF.11 and FRF.12 ( provides fragmentation at Layer 2)

• Cisco-switched VoFR enables voice switching throughout a Frame Relay network

• Interworking between Cisco MC3810, Cisco 2600, and Cisco 3600

• Support for G.729, G.726, G.728, G.711, and G.723.1 voice compression

• Tandem PBX Bypass functionality on Cisco 2600/3600/3810 and 720X for scalability

• Fax support

• Support for trunked and switched voice calls


Voice over IPFeatures of Cisco 2600/C3600

Voice over IPFeatures of Cisco 2600/C3600

• Compliant with industry standard H.323 • Interworking with Cisco 5300, Cisco AP VS3,

and Cisco Ethernet Telephony products; interworking with third-party applications such as Microsoft NetMeeting

• Support for G.729 and G.711 compression • Cisco gatekeeper functionality enables

large deployments• QoS features such as packet marking enabled through IP

Precedence, and priority treatment through specialized queuing• Voice and fax on any port• Integrated IVR and billing


AgendaAgenda




• QoS




Types of Voice GatewaysTypes of Voice Gateways

PBXPBX

EthernetEthernet

PSTN

WAN, Intranet, Internet

VoIP/VoFR/VoATMand DSPs

VoIP/DSPsVoIP/DSPs


Dial-Peer Voice 24 VoIPDestination-Pattern +8…Session Target IPv4:204.94.142.130

84321204.94.142.130

Intelligent Gateway Call Control

Intelligent Gateway Call Control

• Call control and call handling in the gateway

• Each gateway knows about the others

• The dial-peers map dialed numbers to IP addresses

• VoIP or VoFR

V

V

V

Intranet


Gatekeeper

Traffic FlowCall Setup

V

V

V

PBX

PBX

PBX

Gateway Initiated Calls—H.323 Gatekeeper

Gateway Initiated Calls—H.323 Gatekeeper

• Defined by H.323 (used in VoIP) • Gateways auto register with gatekeeper • Gateways initiate calls but do not know about other gateways• Telephony E.164-style addresses mapped to IP addresses

by gatekeeper• H.323 gatekeepers allow scaling

New Feature!


Cisco H.323 Gatekeeper (Video and Voice)

Cisco H.323 Gatekeeper (Video and Voice)

• VoIP scalable address resolution

• Proxy for secure access to enterprises

• Bandwidth management

• Provides QoS for intrazone calls

• H.323 traffic segregation

• Fault-tolerant network capability (HSRP)

• Available on Cisco 3640 NEBS-compliant router platforms and Cisco 2500

New Capability!


Voice over X ApplicationsVoice over X Applications

• Toll bypass Most common application

• PBX extensionExtends services to off premise

• H.323 interoperability (VoIP)Supports voice-enabled PC applications

• Hoot and holler Links to existing hoot equipment, to save costs of dedicated leased lines

• Managed voice/data services


ApplicationsApplications

Phone to PhonePhone to Phone

Phone to Phone through PBXs and Key SystemsPhone to Phone through PBXs and Key Systems

Cisco 3810Cisco 3810 Cisco 2600Cisco 2600

FXSFXS FXSFXS

Cisco 3600Cisco 3600 Cisco 2600Cisco 2600FXSFXS E&ME&M

Key SystemKey System PBXPBX

Intranet

Intranet


ApplicationsApplications

Real-Time Fax to FaxReal-Time Fax to Fax

EthernetEthernetFX0FX0

Cisco 3600Cisco 3600

Computer (H.323 App) or Ethernet Phone to PSTNComputer (H.323 App) or Ethernet Phone to PSTN


Requires VoIPRequires VoIP

PSTN

Intranet

Cisco 3600Cisco 3600 Cisco 3810Cisco 3810FXSFXS FXOFXO

Intranet


ResidentialResidential

HeadquartersHeadquarters

PBXPBX

Branch OfficeBranch Office

Cisco2600

Cisco2600

PBXPBX

Larger Branch OfficeLarger Branch Office

Cisco3600

Cisco3600

VoIP and Fax in the EnterpriseVoIP and Fax in the Enterprise

Gatekeeper Enables Quick and Large Deployments!

VoiceManager

VoiceManager

CiscoAS5300CiscoAS5300


ExistingRouter

ExistingRouter

PBXPBX

PSTN

Call Control (Gatekeeper)Call Control (Gatekeeper)

WAN(Intranet)


VoFR and Fax in the Enterprise

VoFR and Fax in the Enterprise

Frame Relay

Frame Relay

Frame Relay


PBXPBX

VoiceManager

VoiceManager

Tandem PBX

Bypass

Tandem PBX

Bypass

CiscoMC3810CiscoMC3810

Small OfficeSmall Office

PBXPBX

Cisco 3600Cisco 3600 V

PBXPBX

Larger Branch OfficeLarger Branch Office


Cisco 7206

Cisco 7206

PSTNCisco 2600Cisco 2600



VoFR with Tandem PBX Bypass

VoFR with Tandem PBX Bypass

• Allows large-scale VoFR networks • Switches voice without decompression/

recompression • Cisco 7200 manages large numbers of PVCs, switches calls

between sites A & B• Data can share same PVC

Cisco 7206 with Tandem PBX Bypass Software

Cisco 3600

CiscoMC3810

VoFR Traffic Flow after Tandem bypass

VoFR and Data Traffic Flow

Cisco 2600

PBX

Frame Relay Cloud

Frame Relay Cloud

PBX PBX

New Functionality

on Cisco 2600/3600 and 7200!

Site A

Site B


Uses Connection Trunk Feature to Deliver Analog PBX Services to Remote Phones

Off Premise Extensions (OPX) Off Premise Extensions (OPX)

Small OfficeSmall Office



PBXPBX


QoSWAN

(VoIP or VoFR)

PSTN


H.323 Interoperability (Voice and Video)

H.323 Interoperability (Voice and Video)

• H.323 VoIP

• Interoperability with H.323 Voice and Video Applications such as NetMeeting, and so on



PBXPBX

Cisco2600

Cisco2600

I-PhoneH.323 S/W

I-PhoneH.323 S/W

Microsoft NetMeetingMicrosoft

NetMeeting


PBXPBX

4 to 12 Analog Ports


Cisco 3640 Multimedia Conference

Manager

Cisco 3640 Multimedia Conference

Manager

QoSWAN

(VoIP or VoFR)

PSTN

Intel ProShareIntel ProShare


Hoot and HollerHoot and Holler

3600/2600

IP or FR Network

3600/2600

3600/2600

VV

VV

VV

3600/2600

VV

Central Hoot Bridge

Uses connection trunk to setup point-to-point hoot connections


Ethernet Phone InterworkingEthernet Phone Interworking

• H.323 VoIP • Interoperability with NetMeeting • Interoperability with Cisco Ethernet Phone


PBXPBX

Cisco2600

Cisco2600

Call Manager Call Manager


I-PhoneH.323 S/W

I-PhoneH.323 S/W


PBXPBX




PSTN

I-Phone H.323 S/W

I-Phone H.323 S/W

QoSWAN

(VoIP or VoFR)


VoIP/Data—A Managed Service

Company XCompany X

Company Y

Company ZCompany Z

POP B

VoIP-EnabledCisco 2600/3600

VoIP-Enabled Cisco AS5300

POP A

Company XCompany X

Company ZCompany Z

POP CPOP D

Company Y

Company ZCompany Z

Company XCompany X

Company XCompany X

Company ZCompany Z

Gatekeeper

Service Provider Backbone

PSTN


AgendaAgenda




• QoS




Importance of Minimizing Delay

Importance of Minimizing Delay

Usability of Voice Circuit as a Function of End-to-End DelayUsability of Voice Circuit as a Function of End-to-End Delay

0

0.5

1

0 100 200 300 400 500 600 700 800

Time (msec)

Utility

To hit the target:• Eliminate PC delay• Lower network latency• Tighten network jitter

To hit the target:• Eliminate PC delay• Lower network latency• Tighten network jitter

CB Radio

Fax Relay,Fax Broadcast

Toll Quality Satellite

I-PhoneToday

ITU Minimum


VoIP QoS Building BlocksVoIP QoS Building Blocks

• Backbone speed and scale

• Packet classification

• Bandwidth management and admission control

• Congestion management

• Queue management


• Backbone speed and scale

High-performance routers

• Packet classification

IP Precedence (DiffServ)

• Bandwidth management and admission control

Voice compression, CRTP, gatekeepers

• Congestion management

Weighted Random Early Detect

• Queue management

WFQ and other queuing

VoIP QoS Building BlocksVoIP QoS Building Blocks


One 200-Byte Data Packet

Interface BufferResources

Interface BufferResources

TransmitScheduling

Two 100-ByteVoice Packets

ClassifyClassify

11112

Configurable QueuesConfigurable QueuesTwo 100-Byte

Packets Transmitted for Every One 200

Byte Packet

Therefore = “Fair”

Flow Classification/Sorting• Source and destination address• Protocol• Session identifier (port/socket)

Flow Classification/Sorting• Source and destination address• Protocol• Session identifier (port/socket)

Weighted Fair Scheduling• Requested QoS (IP Precedence, RSVP)• Frame Relay FECN, BECN, DE• Flow throughput (Weighted-Fair)

Weighted Fair Scheduling• Requested QoS (IP Precedence, RSVP)• Frame Relay FECN, BECN, DE• Flow throughput (Weighted-Fair)

111122

Flows Share Bandwidth Equally

Weighted Fair Queuing (WFQ)Weighted Fair Queuing (WFQ)

11

22

11

De-queue

De-queue


Session

1

WeightedFair Queuing,

RSVP, IP Precedence,

and so onFragmentation

and Interleaving(RFC 1717)or FRF.12

Voice Quality: QoSVoice Quality: QoS

Session

2

Session

3

Session

4


Source: Cisco Labs

Effect of QoS on VoIP QualityEffect of QoS on VoIP Quality

Timeline

Link Saturation

(%)

Link Saturation

(%)

Quality (PSQM)

CongestedCongested

Lightly LoadedLightly

Loaded

LowQuality

HighQualityHighQuality1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Network Load

Network Load

Quality without

QoS

Quality without

QoS

Quality with QoSQuality

with QoS


AgendaAgenda




• QoS




Cisco’s Position in the MarketCisco’s Position in the Market

0

10

20

30

40

50

60

70

Q2 '98 Q3 '98 Q4 '98 Q1 '99

Cisco Bay 3Com IBM Motorola

MarketShare

(%)

FY

Voice

Ports

Voice

Ports

Over 200KMS UnitsInstalled

Over 200KMS UnitsInstalled

Voice Port Shipments (thousands)

00

1010

2020

7070

8080

9090

100100

3030

4040

5050

6060


Cisco Modular Service Integration

Cisco Modular Service Integration




VoiceVoice

Emerging

TechnologiesEmerging

Technologies LAN-to-LANLAN-to-LAN

DialDial


Modular Access Router Family Modular Access Router Family

• 50–70 kpps fast switching• 3–4 kpps process switching• Four network module slots

• 25–40 kpps fast switching• 1.5–2 kpps process switching• Two network module slots

• 12–25 kpps fast switching• LAN interfaces integrated• One network module slot




VersatilityIntegration

Performance

VersatilityIntegration

Performance


Editors’ choice:Computer TelephonyMarch 1998

Network Modules—Voice/FaxNetwork Modules—Voice/Fax

• Flexible Voice Interfaces (VICs)FXS2-, 4-wire E&M types I, II, III, VFXOBRI VIC

• Diverse signalingDelay, immediate, and wink startLoop and ground start

• DSP architecture—TI542G.729 CS-ACELP—8KG.711 PCMGroup III fax relay

• Voice transport supportVoice over IP—H.323Voice over Frame—VoFR, FRF.11, and FRF.12

Future support for:VoATM

• Two versionsNM-1V (1 VIC slot)NM-2V (2 VIC slots)


BRI VICBRI VIC

• Key featuresTwo BRI interfaces per VIC

Up to four voice channels

Q.931 user side support

Connects to PBX or offnet

Supports DID and Caller ID

New Feature!


Foreign Exchange Station Provides Connections for Standard Phones or Fax Machines or PBXs

Foreign Exchange Office Emulates a Phone and Connects to the Station Side

of a PBX or Directly to a Company. Allows for Off-premise Connections.

Centrex CO

PSTN

Trunk Side of PBX

PBX

E&M Provides for Popular Trunking Arrangements for Connecting PBX to PBX, or Switch to Switch

Cisco 3600 VIC Connection Examples

Cisco 3600 VIC Connection Examples

E&ME&M

FXSFXS

FXO/BRIFXO/BRI


Integrated ManagementIntegrated Management

• Configuration

Cisco ConfigMaker

Cisco Voice Manager

Command-line interface

Telnet

• Diagnostic and management

Thorough call detail records

Cisco Voice Manager(dial-plan managementand testing )

SNMP traps and services


Graphical Configuration and Management—Java–Based

Graphical Configuration and Management—Java–Based


Graphical Reporting Toolsfor QoS Management

Graphical Reporting Toolsfor QoS Management

Quality Measured Using ITU Standards,

Recorded in CDR


Call Data Reports for BillingCall Data Reports for Billing

Billing also Enabled through AAA Services and

Third Parties such asPortal and Belle Systems


AgendaAgenda




• QoS




The Opportunity

New York

Chicago

Frankfurt

London

TokyoHong Kong

Paris

Milan

Data Network

Voice Network

Chicago New York Paris

LondonFrankfurt

Tokyo

Hong KongMilan

PSTN


The ChallengeThe Challenge

Management?Management?

User Training?User Training?Costs?Costs?

Larger Data Pipes?Larger Data Pipes?

Quality of Service?Quality of Service?


Current Network Design—Small Branch

Current Network Design—Small Branch

Key Telephone

System

Key Telephone

System

Small Branch Office25 People

RouterRouter

.

.

.

.

.

.PSTN

Chicago New York

Paris

London

Tokyo

Hong KongMilan

Frankfurt

WAN


Network Redesign—Small Branch

Network Redesign—Small Branch

• Cisco 2600 with voice ports; VoIP has been configured using Weighted Fair Queuing to ensure QoS

• Branch-to-branch LD voice traffic now carried by the IP network

• PSTN carries local calls and backs up the IP network

• Fax traffic is also routed across WAN when it is interoffice

• Key telephone has been programmed to do least cost routing when dialing interoffice

Key Telephone

System

Key Telephone

System

Branch Office20 People

Branch Office20 People


Voice PortsAdded

Voice PortsAdded

.

.

.

.

.

.

PSTN

WAN


Network Redesign—Headquarters

Network Redesign—Headquarters

• Voice ports added with Cisco 5300 and connected to PBX through T1

• On-net LD voice traffic now carried by the IP network

• PSTN carries local calls and backs up the IP network

• Any phone connected to the PBX can now call any branch phone or vice versa, and the traffic can be routed over the data network

Cisco 5300with Voice

Cisco 5300with Voice


PBXPBX

ExistingRouterExistingRouter

PSTN

WAN


Telephone Toll WorksheetTelephone Toll Worksheet

Location

Average Average MinutesMinutes

per per Person Person per Dayper Day

PurposePurposeNumberNumber

of of PeoplePeople

Average Average Minutes Minutes

per per Office Office per Dayper Day

On-Net On-Net % to % to HQHQ

Work Work Days Days per per

MonthMonth

Total Total Minutes Minutes

per Office per Office per Monthper Month

Cost Cost per per

Minute Minute (1)(1)

Monthly Monthly Cost per Cost per

OfficeOffice

ParisParis

FrankfurtFrankfurt

MilanMilan

LondonLondon

New YorkNew York

ChicagoChicago

TokyoTokyo

Hong KongHong Kong

GenevaGeneva

TotalTotal

HQHQ

BranchBranch 3030

1515

125125

4545

1515

1515

3030

8585

160160

7575

5050

6060

170170

175175

9090

24002400

25502550

67506750

62506250

27002700

25502550

26252625

27002700

9090

20%20%

20%20%

21.6721.67

21.6721.67

11051.711051.7

11051.711051.7

10401.610401.6

29254.529254.5

27087.527087.5

11701.811701.8

11376.7511376.75

11701.811701.8

$0.25$0.25

$0.27$0.27

$0.23$0.23

$0.33$0.33

$0.33$0.33

$0.70$0.70

$0.78$0.78

$0.27$0.27

$2763$2763

$2808$2808

$6729$6729

$8939$8939

$3862$3862

$7736$7736

$8874$8874

$3159$3159

$44,870$44,870

BranchBranch

BranchBranch

BranchBranch

BranchBranch

BranchBranch

BranchBranch

BranchBranch

20%20%

20%20%

20%20%

20%20%

20%20%

20%20%

21.6721.67

21.6721.67

21.6721.67

21.6721.67

21.6721.67

21.6721.67


Capital CostsCapital Costs

Routers (Small Branch)Routers (Small Branch)Cisco 2600 w/IP PLUSVoice Ports (4)MemoryWICTotal

Cisco 2600 w/IP PLUSVoice Ports (4)MemoryWICTotal

BranchesBranches Headquarter Cisco SystemsHeadquarter Cisco Systems

Number of BranchesNumber of Branches

Total Capital CostTotal Capital Cost $103,888$103,888

$2695$3000

$400 $400$6495

$2695$3000

$400 $400$6495

66Routers (larger branch)Routers (larger branch)

Cisco 3640MemoryVoice Ports (8)1E2WCisco IOS® Software1T WIC(2)Total

Cisco 3640MemoryVoice Ports (8)1E2WCisco IOS® Software1T WIC(2)Total

$4800$400

$6000$1500$2400

$800$15,900

$4800$400

$6000$1500$2400

$800$15,900

Number of BranchesNumber of Branches 22

Total of Branch RoutersTotal of Branch Routers $70,770$70,770

Total of All New voice enabled routersTotal of All New voice enabled routers $90,770$90,770

Small PBXsSmall PBXsAdditional Trunk CardsSix in Small BranchesTwo Each in Larger Offices

Additional Trunk CardsSix in Small BranchesTwo Each in Larger Offices

$700$700

Number RequiredNumber Required 1111

Total new trunk cardsTotal new trunk cards $7700$7700

Headquarter 5300 GatewayHeadquarter 5300 GatewayRouter + Digital PortsCisco IOS Software (Included)Total

Router + Digital PortsCisco IOS Software (Included)Total

Number RequiredNumber Required

$20,000$20,000

11

TotalTotal $20,000$20,000

Headquarters PBXHeadquarters PBXAdditional Trunk CardsTwo Each in Larger OfficesAdditional Trunk CardsTwo Each in Larger Offices

$5418$5418

Number RequiredNumber Required 11TotalTotal $5418$5418


The Big Payoff!The Big Payoff!

Monthly PSTN Voice Savings $ 44,870

Required Added Bandwidth $ (32,300)

E1 Removed from HQ to PSTN $ 5,840

Net Total Monthly Savings $ 18,410

Monthly PSTN Voice Savings $ 44,870

Required Added Bandwidth $ (32,300)

E1 Removed from HQ to PSTN $ 5,840

Net Total Monthly Savings $ 18,410

Total Capital Costs $ 103,888

Installation (Estimate) $ 15,000

Total $ 118,888

Payback in Months 6.45

Total Capital Costs $ 103,888

Installation (Estimate) $ 15,000

Total $ 118,888

Payback in Months 6.45

Payback Using QoS instead of adding bandwidthPayback Using QoS instead of adding bandwidth 2.34 Months 2.34 Months


Components of Voice Quality

Standards• G.711• G.729• G.113• G.165• H.323• FRF.11

• High Reliability Hardware

• 99.999?%

• Management

• Call Quality Monitoring

• Call Detail Reporting

Quality of Service• Fragmentation and

Interleaving• FRF.12• IP Precedence• WFQ/WRED• RSVP, RTP/CRTP


Overview of Voice FeaturesOverview of Voice Features

• VoIP and VoFR• Configurable QoS • Interworking across the

breadth of Cisco• Real-time fax support• Multiple voice

compression choices• Phone to phone, PBX to PBX,

PC to phone/PBX, PSTN• Available worldwide• PSTN fall-back• Single-stage and

two-stage dialing• Integrated IVR for

authentication and two-stage dialing applications

• Call details records• Complete integrated solutions• Silence suppression• Echo cancellation• Jitter management• Preservation of PBX features• Meets ITU requirements

for delay• Optional integrated

encryption and firewalls• Integrated CSU/DSUs• Enables toll bypass,

OPX, and trunking

10643_02F9_c1 © 1999, Cisco Systems, Inc. Multiservice Networking For Branch Offices.

Documents

Transcript of 10643_02F9_c1 © 1999, Cisco Systems, Inc. Multiservice Networking For Branch Offices.