Download MultiService Networking

Multiservice
Networking
For Branch Offices
0643_02F9_c1
© 1999, Cisco Systems, Inc.
1
Agenda
• Multiservice Networking
• Voice over X Overview
• Voice and Video Applications
• QoS
• Cisco 2600/3600 Voice Solutions
• Case Study—Toll Bypass
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
2
Why Multiservice?
Data Driving Need for Bandwidth
Data
Voice
Traffic
Volume
Infrastructure Consolidation
Data
Voice
Video
1998
Internet
3 Million Access Routers
1 Million TDMs
Customers’ Needs Changing—Fast!
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Installed Base Ready for Churn
www.cisco.com
3
Why Packet Voice?
• Allows network convergence
Lower network capital costs
Packet infrastructure cost efficiencies
Lower network transport costs
Compression economies, nonconsequential
busy hours, single network (data and voice)
volume economies
• Enable new services
Interactive call centers, enhanced fax services,
video calls, expand into new markets,
voice messaging
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
4
The IT Budget Dilemma
“Convergence
Funding”
Data Load/Traffic
( >300% Growth by
2002—Gartner Group)
MIS
Budget
Telecom
Budget
0643_02F9_c1
© 1999, Cisco Systems, Inc.
IT Spending
(<10% Growth
per Year—IDC)
Toll and Access Charges
PBX Costs
www.cisco.com
5
The VoX Drivers
Value-Added
Integrated
Services
Arbitrage
Level of
Importance
or Value
New Service
Access Options
Operational
Advantages
Transport
Benefits
Time
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
6
Agenda
• Multiservice Networking
• Voice over X Overview
• Voice and Video Applications
• QoS
• Cisco 2600/3600 Voice Solutions
• Case Study—Toll Bypass
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
7
Voice Technologies
Packet Telephony Standards
Utility
Quality
Business
Quality
Toll
Quality
•
(Cellular)
PSTN
Voice
VoATM
•
(AAL5)
Cost per
Minute
VoATM
(PCM/AAL1)
VoFR
(Intranet)
VoIP
(Internet)
Quality
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
8
VoIP/VoFR/VoATM
Voice
Over ATM
Over IP
Over FR
Governing
Body
ATM
Forum
IMTC
Frame Relay
Forum
Standards
AAL/CES
H.323
FRF.11
AAL2
RTP
FRF.12
AAl5
SGCP
MGCP
SIP
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
9
Packet Types
Voice
Packets
Type
Frame
Relay
Connection
Oriented,
Layer 2
Connection
Oriented,
Layer 2
IP (RTP)
Connection–
less, Layer 3
ATM
Header
Sizes
Packet
Efficiency
QoS
Routes
Small
Headers
56%
Can be
Hard (CBR)
Fixed/Known
Small
Headers
62.5%
(FRF.11) 79%
(Cisco VoFR)
Deterministic
Fixed/Known
Larger
Headers
33% 83%
(with CRTP)
Soft—Best
Effort
Flexible
ATM/FR
WAN
VoIP
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
10
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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
11
VoIP Gateway Opportunity
1600
Gateway Market Projections
by Killen and Associates
'99
1400
'00
1200
'01
Market 1000
Size in
Millions 800
of Dollars 600
'02
400
200
0
North
America
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Africa/
Asia/Pacific
Middle East
www.cisco.com
Europe
South
America
12
SP Network—Service
Deployment
Service
Voice over IP will be the most popular service offering, with over 60% of service providers
offering it,
Service Offerings
Workgroup
Collaboration
Faxover IP
In 24 Months
Now
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
0
10
20
30
40
50
60
70
Percent of Respondents
1998
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
13
Multiservice Challenges
and Solutions
Challenge
Solution
Prioritization
QoS, IP Precedence
Echo
Standards-Based Echo Cancellation
G.165
Packet Loss
Autofill in Algorithm
Delay
Use of Real-Time Protocol, Queuing
Algorithms, Prioritizations, DSPs
Jitter
Dynamic Buffer Allocation
Bandwidth
Utilization
Use of Standards-Based Voice
Compression, Fragmentation, and QoS
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
14
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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
15
Voice over IP
Features 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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
16
Agenda
• Multiservice Networking
• Voice over X Overview
• Voice and Video Applications
• QoS
• Cisco 2600/3600 Voice Solutions
• Case Study—Toll Bypass
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
17
Types of Voice Gateways
VoIP/VoFR/VoATM
and DSPs
WAN,
Intranet,
Internet
Ethernet
VoIP/DSPs
VoIP/DSPs
PSTN
PBX
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
18
Intelligent Gateway
Call Control
Dial-Peer Voice 24 VoIP
Destination-Pattern +8…
Session Target
IPv4:204.94.142.130
• Call control and
call handling in
the gateway
V
Intranet
• Each gateway knows
about the others
• The dial-peers map
dialed numbers to
IP addresses
V
V
204.94.142.130
84321
• VoIP or VoFR
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
19
Gateway Initiated Calls—
H.323 Gatekeeper
New
Feature!
PBX
V
Call Setup
Traffic Flow
PBX
V
V
PBX
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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
20
Cisco H.323 Gatekeeper
(Video and Voice)
•
•
•
•
•
•
•
New
Capability!
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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
21
Voice over X Applications
• Toll bypass
Most common application
• PBX extension
Extends 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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
22
Applications
Phone to Phone
Cisco 3810
FXS
Cisco 2600
FXS
Intranet
Phone to Phone through PBXs and Key Systems
Cisco 3600
FXS
Intranet
Cisco 2600
E&M
Key System
0643_02F9_c1
© 1999, Cisco Systems, Inc.
PBX
www.cisco.com
23
Applications
Real-Time Fax to Fax
Cisco 3600
FXS
Intranet
Cisco 3810
FXO
Computer (H.323 App) or Ethernet Phone to PSTN
Cisco 2600
Ethernet
Cisco 3600
Intranet
PSTN
FX0
Requires VoIP
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
24
VoIP and Fax in the Enterprise
PBX
PSTN
Residential
Cisco
AS5300
PBX
WAN
Cisco
2600
(Intranet)
Cisco 3600
Call Control
(Gatekeeper)
Branch Office
Voice
Manager
PBX
Cisco
3600
Larger Branch Office
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Existing
Router
Headquarters
Gatekeeper Enables Quick
and Large Deployments!
www.cisco.com
25
VoFR and Fax in
the Enterprise
PBX
PSTN
Cisco 2600
Small Office
Cisco
MC3810
PBX
Frame Relay
Cisco 2600
Tandem
PBX
Bypass
Branch Office
Voice
Manager
PBX
Cisco 3600
Cisco 7206
Headquarters
V
Larger Branch Office
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
26
VoFR with Tandem
PBX Bypass
New
Functionality
on Cisco 2600/
3600 and 7200!
Site A
Cisco 3600
PBX
Frame Relay
Cloud
Site B
VoFR and Data
Traffic Flow
VoFR Traffic
Flow after
Tandem bypass
PBX
PBX
Cisco 2600
Cisco 7206 with
Tandem PBX
Bypass Software
Cisco
MC3810
• 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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
27
Off Premise Extensions (OPX)
Cisco 2600
PBX
PSTN
QoS
WAN
(VoIP or VoFR)
Cisco 3640
Headquarters
Small Office
Uses Connection Trunk Feature to Deliver
Analog PBX Services to Remote Phones
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
28
H.323 Interoperability
(Voice and Video)
PBX
PSTN
I-Phone
H.323 S/W
Residential
PBX
4 to 12
Analog Ports
QoS
WAN
(VoIP or VoFR)
Cisco
2600
Cisco 3640
Multimedia
Conference
Manager
Microsoft
NetMeeting
Branch Office
Intel ProShare
Headquarters
• H.323 VoIP
• Interoperability with H.323 Voice and Video
Applications such as NetMeeting, and so on
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
29
Hoot and Holler
3600/2600
3600/2600
V
V
IP or FR Network
V
3600/2600
Central Hoot
Bridge
V
3600/2600
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Uses connection trunk to setup
point-to-point hoot connections
www.cisco.com
30
Ethernet Phone Interworking
PSTN
I-Phone
H.323 S/W
PBX
Residential
PBX
4 to 12
Analog Ports
QoS
WAN
(VoIP or VoFR)
Cisco
2600
Cisco 3640
Call
Manager
I-Phone
H.323 S/W
Branch Office
Headquarters
• H.323 VoIP
• Interoperability with NetMeeting
• Interoperability with Cisco Ethernet Phone
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
31
VoIP/Data—A Managed Service
Company X
Company X
PSTN
POP A
POP B
Company Z
Company Y
Company Z
Service Provider
Backbone
Company X
Company Y
Company X
POP D
Gatekeeper
Company Z
Company Z
VoIP-Enabled
Cisco AS5300
0643_02F9_c1
© 1999, Cisco Systems, Inc.
POP C
www.cisco.com
VoIP-Enabled
Cisco 2600/3600
32
Agenda
• Multiservice Networking
• Voice over X Overview
• Voice and Video Applications
• QoS
• Cisco 2600/3600 Voice Solutions
• Case Study—Toll Bypass
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
33
Importance of
Minimizing Delay
Usability of Voice Circuit as a
Function of End-to-End Delay
Utility
1
To hit the target:
• Eliminate PC delay
• Lower network latency
• Tighten network jitter
Fax Relay,
Fax Broadcast
CB Radio
0.5
Toll Quality
Satellite
I-Phone
Today
0
0
100
200
ITU Minimum
0643_02F9_c1
© 1999, Cisco Systems, Inc.
300
400
500
600
700
800
Time (msec)
www.cisco.com
34
VoIP QoS Building Blocks
• Backbone speed and scale
• Packet classification
• Bandwidth management and admission control
• Congestion management
• Queue management
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
35
VoIP QoS Building Blocks
• 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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
36
Weighted Fair Queuing (WFQ)
Flows Share Bandwidth Equally
Configurable Queues
Two 100-Byte
Voice Packets
1
Therefore = “Fair”
1
2
1
2
Dequeue
1
Two 100-Byte
Packets Transmitted
for Every One 200
Byte Packet
2
1
1
Classify
One 200-Byte
Data Packet
Interface Buffer
Resources
Flow Classification/Sorting
• Source and destination address
• Protocol
• Session identifier (port/socket)
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Transmit
Scheduling
Weighted Fair Scheduling
• Requested QoS (IP Precedence, RSVP)
• Frame Relay FECN, BECN, DE
• Flow throughput (Weighted-Fair)
www.cisco.com
37
Voice Quality: QoS
Fragmentation
and Interleaving
(RFC 1717)
or FRF.12
Weighted
Fair Queuing,
RSVP,
IP Precedence,
and so on
Session Session
1
0643_02F9_c1
© 1999, Cisco Systems, Inc.
2
www.cisco.com
Session
Session
3
4
38
Effect of QoS on VoIP Quality
Congested
Link
Saturation
(%)
Lightly
Loaded
110
100
90
80
70
60
50
40
30
20
10
0
10
Network
Load
9
Low
Quality
8
7
Quality
without
QoS
Quality
with QoS
6
5
Quality
(PSQM)
4
3
2
1
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
High
Quality
Timeline
Source: Cisco Labs
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
39
Agenda
• Multiservice Networking
• Voice over X Overview
• Voice and Video Applications
• QoS
• Cisco 2600/3600 Voice Solutions
• Case Study—Toll Bypass
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
40
Cisco’s Position in the Market
70
100
60
90
50
80
70
Market 40
Share
(%) 30
Over 200K
MS Units
Installed
20
60 Voice Port
Shipments
50 (thousands)
40
30
20
10
10
0
FY
0
Q2 '98
Cisco
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Q3 '98
Bay
Q4 '98
3Com
www.cisco.com
IBM
Q1 '99
Motorola
41
Cisco Modular
Service Integration
Cisco 3640
Cisco 3620
Cisco 2600
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
42
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
Cisco 3640
Cisco 3620
Cisco 2600
Versatility
Integration
Performance
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
43
Network Modules—Voice/Fax
• Flexible Voice Interfaces (VICs)
• DSP architecture—TI542
FXS
2-, 4-wire E&M types I, II, III, V
FXO
BRI VIC
G.729 CS-ACELP—8K
G.711 PCM
Group III fax relay
• Diverse signaling
• Voice transport support
Voice over IP—H.323
Voice over Frame—VoFR,
FRF.11, and FRF.12
Future support for:
VoATM
Delay, immediate, and wink start
Loop and ground start
• Two versions
NM-1V (1 VIC slot)
NM-2V (2 VIC slots)
Editors’ choice:
Computer Telephony
March 1998
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
44
BRI VIC
New
Feature!
• Key features
Two BRI interfaces
per VIC
Up to four voice channels
Q.931 user side support
Connects to PBX or offnet
Supports DID and Caller ID
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
45
Cisco 3600 VIC
Connection Examples
Trunk Side of PBX
E&M
PBX
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.
E&M Provides for Popular
Trunking Arrangements for
Connecting PBX to PBX,
or Switch to Switch
FXO/BRI
PSTN
Centrex
FXS
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
CO
Foreign Exchange Station
Provides Connections for
Standard Phones or Fax
Machines or PBXs
46
Integrated Management
• Configuration
• Diagnostic and
management
Cisco ConfigMaker
Cisco Voice Manager
Command-line
interface
Telnet
Thorough call
detail records
Cisco Voice Manager
(dial-plan management
and testing )
SNMP traps and
services
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
47
Graphical Configuration and
Management—Java–Based
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
48
Graphical Reporting Tools
for QoS Management
Quality Measured
Using ITU Standards,
Recorded in CDR
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
49
Call Data Reports for Billing
Billing also Enabled
through AAA Services and
Third Parties such as
Portal and Belle Systems
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
50
Agenda
• Multiservice Networking
• Voice over X Overview
• Voice and Video Applications
• QoS
• Cisco 2600/3600 Voice Solutions
• Case Study—Toll Bypass
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
51
The Opportunity
Voice Network
New York
PSTN
Milan
Chicago
Paris
Tokyo
Hong Kong
Frankfurt
London
Data Network
London
Chicago
0643_02F9_c1
© 1999, Cisco Systems, Inc.
New York
Frankfurt
Tokyo
Paris
www.cisco.com
Milan
Hong Kong
52
The Challenge
Quality of Service?
Management?
Costs?
User Training?
Larger Data Pipes?
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
53
Current Network Design—
Small Branch
Key
Telephone
System
.
.
.
PSTN
London
Chicago New
York
WAN
Frankfurt
Tokyo
Paris
Milan
Hong Kong
Router
Small Branch Office
25 People
0643_02F9_c1
© 1999, Cisco Systems, Inc.
www.cisco.com
54
Network Redesign—
Small Branch
• Cisco 2600 with voice ports;
VoIP has been configured
using Weighted Fair Queuing
to ensure QoS
Key
Telephone
System
PSTN
.
.
.
• Branch-to-branch LD voice
traffic now carried by the
IP network
• PSTN carries local calls and
backs up the IP network
WAN
Cisco 2610
• Fax traffic is also routed
across WAN when it is
interoffice
• Key telephone has been
programmed to do least
cost routing when dialing
interoffice
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Voice
Ports
Added
Branch Office
20 People
www.cisco.com
55
Network Redesign—
Headquarters
• Voice ports added with
Cisco 5300 and connected
to PBX through T1
Headquarters
PBX
PSTN
• On-net LD voice traffic
now carried by the
IP network
Cisco 5300
with Voice
• PSTN carries local
calls and backs up
the IP network
WAN
• 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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
Existing
Router
www.cisco.com
56
Telephone Toll Worksheet
Location
Average Average
Number Minutes Minutes On-Net
of
per
per
% to
Purpose
People Person Office
HQ
per Day per Day
Work
Days
per
Month
Total
Cost
Monthly
Minutes
per
Cost per
per Office Minute
Office
per Month
(1)
HQ
Paris
Frankfurt
Branch
30
85
2550
20%
21.67 11051.7 $0.25 $2763
Milan
Branch
15
160
2400
20%
21.67 10401.6
$0.27 $2808
London
Branch
90
75
6750
20%
21.67 29254.5
$0.23 $6729
New York
Branch
125
50
6250
20%
21.67 27087.5 $0.33
$8939
Chicago
Branch
45
60
2700
20%
21.67 11701.8
$0.33
$3862
Tokyo
Branch
15
170
2550
20%
21.67 11051.7
$0.70
$7736
Hong Kong Branch
15
175
2625
20%
21.67 11376.75 $0.78
$8874
Geneva
30
90
2700
20%
21.67 11701.8 $0.27 $3159
Branch
Total
0643_02F9_c1
$44,870
© 1999, Cisco Systems, Inc.
www.cisco.com
57
Capital Costs
Branches
Headquarter Cisco Systems
Routers (Small Branch)
Headquarter 5300 Gateway
Cisco 2600 w/IP PLUS
Voice Ports (4)
Memory
WIC
Total
Number of Branches
Routers (larger branch)
Cisco 3640
Memory
Voice Ports (8)
1E2W
Cisco IOS® Software
1T WIC(2)
Total
Number of Branches
$2695
$3000
$400
$400
$6495
6
$4800
$400
$6000
$1500
$2400
$800
$15,900
2
Total of Branch Routers
$70,770
Small PBXs
Additional Trunk Cards
Six in Small Branches
Two Each in Larger Offices
Number Required
Router + Digital Ports
Cisco IOS Software (Included)
Total
Number Required
Total
Total of All New voice enabled
routers
0643_02F9_c1
© 1999, Cisco Systems, Inc.
1
$20,000
$90,770
Headquarters PBX
$700
11
Additional Trunk Cards
Two Each in Larger Offices
Number Required
Total
Total new trunk cards
$20,000
$7700
Total Capital Cost
www.cisco.com
$5418
1
$5418
$103,888
58
The Big Payoff!
Monthly PSTN Voice Savings
Required Added Bandwidth
E1 Removed from HQ to PSTN
Net Total Monthly Savings
$ (32,300)
$ 5,840
$ 18,410
Total Capital Costs
$ 103,888
Installation (Estimate)
$ 15,000
Total
$ 118,888
Payback in Months
6.45
Payback Using QoS instead
of adding bandwidth
0643_02F9_c1
$ 44,870
© 1999, Cisco Systems, Inc.
www.cisco.com
2.34 Months
59
Summary
0643_02F9_c1
© 1999, Cisco Systems, Inc.
60
Components of Voice Quality
Standards
• G.711
• G.729
• G.113
• G.165
• H.323
• FRF.11
• High
Reliability
Hardware
• 99.999?%
Quality of Service
• Fragmentation and
Interleaving
• FRF.12
• IP Precedence
• WFQ/WRED
• RSVP, RTP/CRTP
0643_02F9_c1
© 1999, Cisco Systems, Inc.
• Management
• Call Quality
Monitoring
• Call Detail
Reporting
www.cisco.com
61
Overview 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
0643_02F9_c1
© 1999, Cisco Systems, Inc.
•
•
•
•
•
•
•
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
www.cisco.com
62