Cisco Networks (ONT) 2006 Cisco Systems, Inc. All rights reserved.

Size: px
Start display at page:

Download "Cisco Networks (ONT) 2006 Cisco Systems, Inc. All rights reserved."

Transcription

1 Optimizing Converged Cisco Networks (ONT) reserved.

2 Lesson 2.4: Calculating Bandwidth Requirements for VoIP reserved.

3 Objectives Describe factors influencing encapsulation overhead and bandwidth requirements for VoIP. Explain how the packetization period impacts VoIP packet size and rate. Explain how link encapsulation effects data-link overhead on a per link basis. Explain the bandwidth impact of adding a tunneling protocol header to voice packets. Use the bandwidth calculation process to calculate bandwidth needs for various VoIP call types. Describe how VAD is used in VoIP implementations. 3

4 Factors Influencing Encapsulation Overhead and dbandwidth Factor Packet rate Packetization size (payload size) IP overhead (including UDP and RTP) Data-link overhead Tunneling overhead (if used) Description Derived from packetization period (the period over which encoded voice bits are collected for encapsulation) Depends on packetization period Depends on codec bandwidth (bits per sample) Depends on the use of crtp Depends on protocol (different per link) Depends on protocol (IPsec, GRE, or MPLS) 4

5 Bandwidth Implications of Codecs Codec bandwidth is for voice information only. No packetization overhead is included. Codec Bandwidth G kbps G.726 r32 32 kbps G.726 r24 24 kbps G.726 r16 16 kbps G kbps G kbps 5

6 How the Packetization Period Impacts VoIP Packet Size and Rate High packetization period results in: Larger IP packet size (adding to the payload) Lower packet rate (reducing the IP overhead) Default packetization period on most Cisco VoIP devices is 20 ms. This default is the optimal value for most scenarios. 6

7 VoIP Packet Size and Packet Rate Examples Codec and Packetization Period G ms G ms G ms G ms Codec bandwidth (kbps) Packetization size (bytes) IP overhead (bytes) VoIP packet size (bytes) Packet rate (pps)

8 Data-Link Overhead Is Different per Link Data-Link Protocol Ethernet Frame Relay MLP Ethernet Trunk (802.1Q) Overhead [bytes]

9 Security and Tunneling Overhead IP packets can be secured by IPsec. Additionally, IP packets or data-link frames can be tunneled over a variety of protocols. GRE, transport L3 packets or L2 frames over IP packets Layer 2 Forwarding (L2F) and Layer 2 Tunneling Protocol (L2TP) PPPoE, which allows PPP to be used over Ethernet 802.1Q tunneling, transports 802.1Q frames inside another VLAN Characteristics of IPsec and tunneling protocols are: The original i lframe or packet ktis encapsulated dit into another protocol. The added headers result in larger packets and higher bandwidth. The extra bandwidth can be extremely critical for voice packets because of the transmission of small packets at a high rate. 9

10 Extra Headers in Security and Tunneling Protocols Protocol Header Size (bytes) IPsec transport mode IPsec tunnel mode L2TP/GRE 24 MPLS 4 PPPoE 8 IPsec and tunneling protocols add headers of different sizes. Depends on the use of the available headers (AH and ESP), the encryption or authentication algorithms that are used in these headers, and the IPsec mode (transport tor tunnel mode). ) 10

11 Example: VoIP over IPsec VPN G.729 codec (8 kbps) 20-ms packetization i period d(20b bytes) No crtp IPsec ESP with 3DES and SHA-1, tunnel mode 4 bytes of padding to reach a payload size of 64 bytes, and 30 bytes for the ESP header 11

12 Total Bandwidth Required for a VoIP Call Total bandwidth of a VoIP call, as seen on the link, is important for: Designingg gthe capacity of the physical link Deploying Call Admission Control (CAC) Limits the number of concurrent voice calls to avoid oversubscription of the link. Deploying QoS 12

13 Total Bandwidth Calculation Procedure To calculate the total bandwidth of a VoIP call, perform these steps: 1. Gather required packetization information: Packetization period (default is 20 ms) or size Codec bandwidth h( (approximately 8 64 kbps) 2. Gather required information about the link: crtp enabled Type of data-link protocol IPsec or any tunneling protocols used 3. Calculate the packetization size or period. 4. Sum up packetization size and all headers and trailers. 5. Calculate the packet rate (how many packets will be sent per second). 6. Calculate the total bandwidth. 13

14 Bandwidth Calculation Example Bandwidth [kbps] = (Total packet size [bytes per packet] * 8 / 1000) * packet rate [pps] 14

15 Quick Bandwidth Calculation l Total packet size Total bandwidth requirement = Payload size Nominal bandwidth requirement Total packet size = All headers + payload Parameter Layer 2 header IP + UDP + RTP headers Value 6 to 18 bytes 40 bytes Payload size (20-ms sample interval) 20 bytes for G.729, 160 bytes for G.711 Nominal bandwidth 8 kbps for G.729, 64 kbps for G.711 Example: G.729 with Frame Relay: Total bandwidth requirement = ( bytes) * 8 kbps = 26.4 kbps 20 bytes 15

16 Voice activity detection (VAD) Characteristics Voice activity detection (VAD) can take advantage of the fact that one-third of the average voice call consists of silence. Detects silence (speech pauses) Suppresses transmission of silence patterns The amount of bandwidth saved depends on multiple factors: Type of audio (for example, speech or MoH) Level of background noise (if too high, VAD cannot detect silence) Other factors (for example, language, character of speaker, or type of call) Can save up to 35 percent of bandwidth under certain statistical distribution of call types, which is usually achieved only if a link carries at least 24 calls. If fyou are calculating l bandwidth hfor fewer calls, you should not take VAD into account. 16

17 VAD Bandwidth-Reduction Examples Data-Link Overhead Ethernet Frame Relay Frame Relay MLPP 18 bytes 6 bytes 6 bytes 6 bytes IP overhead no crtp crtp no crtp crtp 40 bytes 4 bytes 40 bytes 2 bytes Codec G kbps G kbps G kbps G kbps Packetization 20 ms 160 bytes 30 ms 240 bytes 20 ms 20 bytes 40 ms 40 bytes Bandwidth without t 87.2 kbps kbps 26.4 kbps kbps VAD Bandwidth with VAD (35% reduction) kbps kbps kbps 6.24 kbps

18 Lesson 2.5: Implementing VoIP in an Enterprise Network reserved.

19 Objectives List the common components of an enterprise voice implementation. Describe Call Admission Control and how it differs from QoS. Describe the functions of the ecisco Unified CallManager. a age. Identify common enterprise IP telephony deployment models. Identify basic Cisco IOS VoIP configuration commands. 19

20 Enterprise Voice Implementations Components of enterprise voice networks: Gateways (interconnect traditional telephony systems) Gatekeepers (scalability of dial plans and for bandwidth management when using the H.323 protocol) Cisco Unified CallManager (PBX-like features to IP phones) and IP phones 20

21 Deploying CAC CAC artificially limits the number of concurrent voice calls. Prevents oversubscription of WAN resources caused by too much voice traffic. Is needed because QoS cannot solve the problem of voice call oversubscription: i QoS gives priority only to certain packet types (RTP versus data). QoS cannot block the setup of too many voice calls. Too much voice traffic results in delayed voice packets. 21

22 Example: CAC Deployment IP network (WAN) is only designed for two concurrent voice calls. If CAC is not deployed, d a third call can be set up, causing poor quality for all calls. When CAC is deployed, the third call is blocked. With the CAC configuration, no voice quality problems should be experienced. 22

23 Voice Gateway Functions on a Cisco Router Cisco routers, especially the ISR, are voice capable. These routers can be equipped with traditional telephony interfaces to act as gateways for analog and digital devices. The gateway functions are: dual tone multifrequency (DTMF) Connects traditional telephony devices to VoIP Converts analog signals to digital format Encapsulates voice into IP packets Performs voice compression Provides DSP resources for conferencing and transcoding Cisco Survivable Remote Site Telephony (SRST) Supports fallback scenarios for IP phones (Cisco SRST) Acts as a call agent for IP phones (Cisco Unified CallManager Express) Provides DTMF relay and fax and modem support 23

24 Cisco Unified CallManager Functions Cisco Unified CallManager is the IP-based PBX in an IP telephony solution. Acts t as a call agent for IP phones and MGCP gateways and can also interact with H.323 or SIP devices. There are six main functions performed by Cisco Unified CallManager: Call processing Dial plan administration Signaling and device control Phone feature administration Directory and XML services Programming interface to external applications: Cisco IP Communicator, Cisco IP Interactive Voice Response (IVR), Cisco Personal Assistant, and Cisco IP Communicator Cisco Unified CallManager Attendant Console. 24

25 Example: Signaling and Call Processing 1. User dials the telephone number, the IP phone sends signaling messages to the Cisco Unified CallManager cluster. 2. The CUCM server processes the call by looking up the called number in the CUCM s call routing table. 25

26 Example: Signaling and Call Processing 3. The CUCM server determines the IP address of the destination telephone, and sends a signaling message to the destination i telephone. The destination telephone starts ringing, and the user who is being called can accept the call. 4. After the call is accepted, the telephones start sending and receiving RTP packets that carry audio signals. 26

27 Enterprise IP Telephony Deployment Models Deployment Model Single site Multisite with centralized call processing Multisite with distributed call processing Clustering over WAN Characteristics Cisco Unified CallManager cluster at the single site Local IP phones only Cisco Unified CallManager cluster only at a single site Local and remote IP phones Cisco Unified CallManager clusters at multiple sites Local IP phones only Single Cisco Unified CallManager cluster distributed over multiple sites Usually local IP phones only Requirement: Round-trip delay between any pair of servers not to exceed 40 ms 27

28 Single Site Cisco Unified CallManager servers, applications, and DSP resources are located at the same physical location. IP WAN is not used for voice. PSTN is used for all external calls. Note: Cisco Unified CallManager cluster can be connected to various places depending on the topology. 28

29 Multisite it with Centralized Call Processing CUCM servers and applications are located at the central site while DSP resources are distributed. IP WAN carries data and voice (signaling for all calls, media only for intersite calls). PSTN access is provided at all sites. 29

30 Multisite it with Centralized Call Processing CAC is used to limit the number of VoIP calls, and Automated Alternate Routing (AAR) is used if WAN bandwidth is exceeded to reroute the calls through the PSTN Cisco SRST is located at the remote branch. Note: CUCM cluster can be connected to various places depending on the topology. 30

31 Multisite it with Distributed ib t Call Processing Note: CUCM cluster can be connected to various places, depending on the topology. CUCM servers, applications, and DSP resources are located at each site. IP WAN carries data and voice for intersite calls only (signaling and media). PSTN access is provided at all sites; rerouting to PSTN is configured if IP WAN is down. CAC is used to limit the number of VoIP calls, and AAR is used if WAN bandwidth is exceeded. 31

32 Clustering over WAN Note: CUCM cluster can be connected to various places, depending on the topology. CUCM servers of a single cluster are distributed among multiple sites while applications and DSP resources are located at each site. Intracluster communication (such as database synchronization) is performed over the WAN. IP WAN carries data and voice for intersite calls only (signaling and media). 32

33 Clustering over WAN Note: CUCM cluster can be connected to various places, depending on the topology. PSTN access is provided at all sites; rerouting to PSTN is performed if IP WAN is down. CAC is used to limit the number of VoIP calls; AAR is used if WAN bandwidth is exceeded. 33

34 Basic Cisco IOS VoIP Voice Commands 34

35 Voice-Specific Commands router(config)# dial-peer voice tag type Use the dial-peer voice command to enter the dial peer subconfiguration mode. router(config-dial-peer)# destination-pattern telephone_numbernumber Defines the telephone number that applies to the dial peer. 35

36 Voice-Specific Commands (Cont.) router(config-dial-peer)# port port-number Defines the port number that applies to the dial peer. Calls that are routed using this dial peer are sent to the specified port. router(config-dial-peer)# session target ipv4 :ip-address Defines the IP address of the target VoIP device that applies to the dial peer. 36

37 Self Check 1. Describe the relationship between packetization period and packet size and packet rate. 2. How does the data-link protocol used effect bandwidth considerations? 3. What is the default packetization period on Cisco devices? 4. What is VAD? 5. How much bandwidth can be saved, on average, using VAD? 6. What is CAC? 7. What can happen is CAC is not used? 8. What command is used to define the telephone number that applies to the dial peer? 9. List 4 deployment options when using the Cisco Unified CallManager. 37

38 Summary VoIP packet size and rate are determined by the packetization period. Data-link overhead must be considered with calculating bandwidth requirements. Different links have different overhead requirements. Adding a tunneling protocol header effects the bandwidth requirements for voice packets. This additional overhead must be considered when calculating bandwidth requirements. Voice Activity Detection (VAD) is a process used to detect silence in order to save bandwidth. VAD can save 34% on average. 38

39 Summary Enterprise voice implementations use components such as gateways, gatekeepers, Cisco Unified CallManager, and IP phones. Call Admission Control (CAC) extends the functionality of QoS to ensure that t an additional call is not allowed unless bandwidth is available to support it. Enterprise IP Telephony deployment models include single site, multisite with centralized call processing, multisite with distributed call processing, and clustering over the WAN. 39

40 Resources VoiceOverIP - Per Call Bandwidth Consumption ae2.shtml#topic1 Voice Codec Bandwidth Calculator Video: The ABCs of VoIP (16 min.) Voice and Unified Communications VoIP Call Admission Control p 40

41 41 41

Optimizing Converged Cisco Networks (ONT)

Optimizing Converged Cisco Networks (ONT) Optimizing Converged Cisco Networks (ONT) Module 2: Cisco VoIP Implementations (Deploy) Calculating Bandwidth Requirements for VoIP Objectives Describe factors influencing encapsulation overhead and bandwidth

More information

IP Telephony Deployment Models

IP Telephony Deployment Models CHAPTER 2 Sections in this chapter address the following topics: Single Site, page 2-1 Multisite Implementation with Distributed Call Processing, page 2-3 Design Considerations for Section 508 Conformance,

More information

Voice Over IP Per Call Bandwidth Consumption

Voice Over IP Per Call Bandwidth Consumption Over IP Per Call Bandwidth Consumption Interactive: This document offers customized voice bandwidth calculations with the TAC Bandwidth Calculator ( registered customers only) tool. Introduction Before

More information

Curso de Telefonía IP para el MTC. Sesión 1 Introducción. Mg. Antonio Ocampo Zúñiga

Curso de Telefonía IP para el MTC. Sesión 1 Introducción. Mg. Antonio Ocampo Zúñiga Curso de Telefonía IP para el MTC Sesión 1 Introducción Mg. Antonio Ocampo Zúñiga Conceptos Generales VoIP Essentials Family of technologies Carries voice calls over an IP network VoIP services convert

More information

Challenges and Solutions in VoIP

Challenges and Solutions in VoIP Challenges and Solutions in VoIP Challenges in VoIP The traditional telephony network strives to provide 99.99 percent uptime to the user. This corresponds to 5.25 minutes per year of down time. Many data

More information

Calculating Bandwidth Requirements

Calculating Bandwidth Requirements Calculating Bandwidth Requirements Codec Bandwidths This topic describes the bandwidth that each codec uses and illustrates its impact on total bandwidth. Bandwidth Implications of Codec 22 One of the

More information

CVOICE - Cisco Voice Over IP

CVOICE - Cisco Voice Over IP CVOICE - Cisco Voice Over IP Table of Contents Introduction Audience At Course Completion Prerequisites Applicable Products Program Contents Course Outline Introduction This five-day course covers the

More information

Implementing Cisco Voice Communications and QoS

Implementing Cisco Voice Communications and QoS Implementing Cisco Voice Communications and QoS Course CVOICE v8.0; 5 Days, Instructor-led Course Description Implementing Cisco Voice Communications and QoS (CVOICE) v8.0 teaches learners about voice

More information

CVOICE Exam Topics Cisco Voice over IP Exam #642-432 7/14/2005

CVOICE Exam Topics Cisco Voice over IP Exam #642-432 7/14/2005 CVOICE Exam Topics Cisco Voice over IP Exam #642-432 7/14/2005 From the Cisco CVOICE 642-432 Exam Topics Voice over IP Technologies Describe the similarities and differences between PSTN and VoIP including

More information

642-436 Q&A. DEMO Version

642-436 Q&A. DEMO Version Cisco Voice over IP (CVOICE) Q&A DEMO Version Copyright (c) 2010 Chinatag LLC. All rights reserved. Important Note Please Read Carefully For demonstration purpose only, this free version Chinatag study

More information

IMPLEMENTING CISCO VOICE COMMUNICATIONS AND QOS Volume 1

IMPLEMENTING CISCO VOICE COMMUNICATIONS AND QOS Volume 1 IMPLEMENTING CISCO VOICE COMMUNICATIONS AND QOS Volume 1 Course Introduction Overview Learner Skills and Knowledge Course Goal and Course Flow Additional References Cisco Glossary of Terms Your Training

More information

Cisco CCNP 642 845 Optimizing Converged Cisco Networks (ONT)

Cisco CCNP 642 845 Optimizing Converged Cisco Networks (ONT) Cisco CCNP 642 845 Optimizing Converged Cisco Networks (ONT) Course Number: 642 845 Length: 5 Day(s) Certification Exam This course will help you prepare for the following exam: Cisco CCNP Exam 642 845:

More information

Gateways and Their Roles

Gateways and Their Roles Gateways and Their Roles Understanding Gateways This topic describes the role of voice gateways and their application when connecting VoIP to traditional PSTN and telephony equipment. Analog vs. Digital

More information

IP Telephony v1.0 Scope and Sequence. Cisco Networking Academy Program

IP Telephony v1.0 Scope and Sequence. Cisco Networking Academy Program IP Telephony v1.0 Scope and Sequence Cisco Networking Academy Program Table of Content COURSE OVERVIEW...4 Course Description...4 Course Objectives...4 Target Audience...5 Prerequisites...5 Lab Requirements...5

More information

- Basic Voice over IP -

- Basic Voice over IP - 1 Voice over IP (VoIP) - Basic Voice over IP - Voice over IP (VoIP) is a digital form of transport for voice transmissions, replacing analog phone systems. The benefits of VoIP are considerable: Better

More information

This topic describes dial peers and their applications.

This topic describes dial peers and their applications. Dial Peers What is Dial Peer? This topic describes dial peers and their applications. What is a Dial Peer? A dial peer is an addressable call endpoint. Dial peers establish logical connections, called

More information

VoIP Bandwidth Considerations - design decisions

VoIP Bandwidth Considerations - design decisions VoIP Bandwidth Considerations - design decisions When calculating the bandwidth requirements for a VoIP implementation the two main protocols are: a signalling protocol such as SIP, H.323, SCCP, IAX or

More information

Let's take a look at another example, which is based on the following diagram:

Let's take a look at another example, which is based on the following diagram: Chapter 3 - Voice Dial Peers In order to understand the concept of dial peers, it is important to understand call legs. A voice call over a packet network is segmented into discrete call legs. A call leg

More information

Encapsulating Voice in IP Packets

Encapsulating Voice in IP Packets Encapsulating Voice in IP Packets Major VoIP Protocols This topic defines the major VoIP protocols and matches them with the seven layers of the OSI model. Major VoIP Protocols 15 The major VoIP protocols

More information

SIP Trunking. Cisco Press. Christina Hattingh Darryl Sladden ATM Zakaria Swapan. 800 East 96th Street Indianapolis, IN 46240

SIP Trunking. Cisco Press. Christina Hattingh Darryl Sladden ATM Zakaria Swapan. 800 East 96th Street Indianapolis, IN 46240 SIP Trunking Christina Hattingh Darryl Sladden ATM Zakaria Swapan Cisco Press 800 East 96th Street Indianapolis, IN 46240 SIP Trunking Contents Introduction xix Part I: From TDM Trunking to SIP Trunking

More information

640-460 - Implementing Cisco IOS Unified Communications (IIUC)

640-460 - Implementing Cisco IOS Unified Communications (IIUC) 640-460 - Implementing Cisco IOS Unified Communications (IIUC) Course Introduction Course Introduction Module 1 - Cisco Unified Communications System Introduction Cisco Unified Communications System Introduction

More information

Troubleshooting SIP Trunks with Cisco CallManager 5.x and Later

Troubleshooting SIP Trunks with Cisco CallManager 5.x and Later Troubleshooting SIP Trunks with Cisco CallManager 5.x and Later Document ID: 98524 Contents Introduction Prerequisites Requirements Components Used Conventions SIP with CallManager 5.x Media Termination

More information

Components of a VoIP Network

Components of a VoIP Network Introducing VoIP Networks Benefits of a VoIP Network More efficient use of bandwidth and equipment Lower transmission costs Consolidated network expenses Improved employee productivity through features

More information

Implementing Cisco IP Telephony & Video, Part 2 CIPTV2 v1.0; 5 Days; Instructor-led

Implementing Cisco IP Telephony & Video, Part 2 CIPTV2 v1.0; 5 Days; Instructor-led Implementing Cisco IP Telephony & Video, Part 2 CIPTV2 v1.0; 5 Days; Instructor-led Course Description Implementing Cisco IP Telephony & Video, Part 2 (CIPTV2) v1.0 is a five-day course that prepares the

More information

Communications Transformations 2: Steps to Integrate SIP Trunk into the Enterprise

Communications Transformations 2: Steps to Integrate SIP Trunk into the Enterprise Communications Transformations 2: Steps to Integrate SIP Trunk into the Enterprise The Changing Landscape IP-based unified communications is widely deployed in enterprise networks, both for internal calling

More information

Course 4: IP Telephony and VoIP

Course 4: IP Telephony and VoIP Course 4: IP Telephony and VoIP Telecommunications Technical Curriculum Program 3: Voice Knowledge 6/9/2009 1 Telecommunications Technical Curriculum Program 1: General Industry Knowledge Course 1: General

More information

Curso de Telefonía IP para el MTC. Sesión 2 Requerimientos principales. Mg. Antonio Ocampo Zúñiga

Curso de Telefonía IP para el MTC. Sesión 2 Requerimientos principales. Mg. Antonio Ocampo Zúñiga Curso de Telefonía IP para el MTC Sesión 2 Requerimientos principales Mg. Antonio Ocampo Zúñiga Factors Affecting Audio Clarity Fidelity: Audio accuracy or quality Echo: Usually due to impedance mismatch

More information

Combining Voice over IP with Policy-Based Quality of Service

Combining Voice over IP with Policy-Based Quality of Service TechBrief Extreme Networks Introduction Combining Voice over IP with Policy-Based Quality of Service Businesses have traditionally maintained separate voice and data networks. A key reason for this is

More information

IP Implementation in Private Branch Exchanges From 9:30 a.m until 4:30 p.m (7 hrs./day) 5 days / week

IP Implementation in Private Branch Exchanges From 9:30 a.m until 4:30 p.m (7 hrs./day) 5 days / week Course Title: No. of Hours: IP Implementation in Private Branch Exchanges From 9:30 a.m until 4:30 p.m (7 hrs./day) 5 days / week 1 Course Duration: 3 Months (12weeks) No. Of Hours: 7 Hrs./Day- 5 days/week.

More information

Introducing Cisco Voice and Unified Communications Administration Volume 1

Introducing Cisco Voice and Unified Communications Administration Volume 1 Introducing Cisco Voice and Unified Communications Administration Volume 1 Course Introduction Overview Learner Skills and Knowledge Course Goal and Course Flow Additional Cisco Glossary of Terms Your

More information

Voice over IP Basics for IT Technicians

Voice over IP Basics for IT Technicians Voice over IP Basics for IT Technicians White Paper Executive summary The IP phone is coming or has arrived on desk near you. The IP phone is not a PC, but does have a number of hardware and software elements

More information

EarthLink Business SIP Trunking. Cisco Call Manager and Cisco CUBE Customer Configuration Guide

EarthLink Business SIP Trunking. Cisco Call Manager and Cisco CUBE Customer Configuration Guide EarthLink Business SIP Trunking Cisco Call Manager and Cisco CUBE Customer Configuration Guide Publication History First Release: Version 2.0 April 20, 2012 CHANGE HISTORY Version Date Change Details Changed

More information

Application Note How To Determine Bandwidth Requirements

Application Note How To Determine Bandwidth Requirements Application Note How To Determine Bandwidth Requirements 08 July 2008 Bandwidth Table of Contents 1 BANDWIDTH REQUIREMENTS... 1 1.1 VOICE REQUIREMENTS... 1 1.1.1 Calculating VoIP Bandwidth... 2 2 VOIP

More information

An Introduction to VoIP Protocols

An Introduction to VoIP Protocols An Introduction to VoIP Protocols www.netqos.com Voice over IP (VoIP) offers the vision of a converged network carrying multiple types of traffic (voice, video, and data, to name a few). To carry out this

More information

VoIP Configuration Examples

VoIP Configuration Examples APPENDIX C This section uses four different scenarios to demonstrate how to configure Voice over IP (VoIP). The actual VoIP configuration procedure depends on the topology of your voice network. The following

More information

Cisco Which VPN Solution is Right for You?

Cisco Which VPN Solution is Right for You? Table of Contents Which VPN Solution is Right for You?...1 Introduction...1 Before You Begin...1 Conventions...1 Prerequisites...1 Components Used...1 NAT...2 Generic Routing Encapsulation Tunneling...2

More information

Cisco CME Features and Functionality

Cisco CME Features and Functionality Cisco CME Features and Functionality Supported Protocols and Integration Options This topic describes the supported protocols and integration options of Cisco CME. Supported Protocols and Integration FAX

More information

Clearing the Way for VoIP

Clearing the Way for VoIP Gen2 Ventures White Paper Clearing the Way for VoIP An Alternative to Expensive WAN Upgrades Executive Overview Enterprises have traditionally maintained separate networks for their voice and data traffic.

More information

Bandwidth Security and QoS Considerations

Bandwidth Security and QoS Considerations This chapter presents some design considerations for provisioning network bandwidth, providing security and access to corporate data stores, and ensuring Quality of Service (QoS) for Unified CCX applications.

More information

5. DEPLOYMENT ISSUES Having described the fundamentals of VoIP and underlying IP infrastructure, let s address deployment issues.

5. DEPLOYMENT ISSUES Having described the fundamentals of VoIP and underlying IP infrastructure, let s address deployment issues. 5. DEPLOYMENT ISSUES Having described the fundamentals of VoIP and underlying IP infrastructure, let s address deployment issues. 5.1 LEGACY INTEGRATION In most cases, enterprises own legacy PBX systems,

More information

Dial Peer. Example: Dial-Peer Configuration

Dial Peer. Example: Dial-Peer Configuration Configuring Dial Peers Understanding Dial Peers This topic describes dial peers and their applications. Understanding Dial Peers A dial peer is an addressable call endpoint. Dial peers establish logical

More information

2- Technical Training (9 weeks) 3- Applied Project (3 weeks) 4- On Job Training (OJT) (4 weeks)

2- Technical Training (9 weeks) 3- Applied Project (3 weeks) 4- On Job Training (OJT) (4 weeks) Course Title: Prerequisites: Training Program (5 months) IP Implementation in Private Branch Exchanges Must fresh graduates Communication/Electronics Engineers" 1- Soft Skills Training (4 weeks) 1. Communication

More information

Voice over IP (VoIP) Basics for IT Technicians

Voice over IP (VoIP) Basics for IT Technicians Voice over IP (VoIP) Basics for IT Technicians VoIP brings a new environment to the network technician that requires expanded knowledge and tools to deploy and troubleshoot IP phones. This paper provides

More information

Configuring Voice over IP

Configuring Voice over IP CHAPTER 4 This chapter explains how to configure voice interfaces and ports, which convert telephone voice signals for transmission over an IP network. This chapter presents the following major topics:

More information

640-461: Introducing Cisco Voice and Unified Communications Administration (ICOMM) v8.0 Course Introduction

640-461: Introducing Cisco Voice and Unified Communications Administration (ICOMM) v8.0 Course Introduction 640-461: Introducing Cisco Voice and Unified Communications Administration (ICOMM) v8.0 Course Introduction Course Introduction Module 01 - Overview of Cisco Unified Communications Solutions Understanding

More information

Enterprise VoIP. Silvano Gai. ftp://ftpeng.cisco.com/sgai/t2000voip.pdf. Cisco Systems, USA Politecnico di Torino, IT sgai@cisco.com.

Enterprise VoIP. Silvano Gai. ftp://ftpeng.cisco.com/sgai/t2000voip.pdf. Cisco Systems, USA Politecnico di Torino, IT sgai@cisco.com. Enterprise Vo Terena 2000 ftp://ftpeng.cisco.com/sgai/t2000voip.pdf Silvano Gai Cisco Systems, USA Politecnico di Torino, IT sgai@cisco.com Terena 2000 1 Compass Motivation for Vo Voice over in the Enterprise

More information

IMPLEMENTING CISCO IP TELEPHONY & VIDEO, PART 1 V1.0 (CIPTV1)

IMPLEMENTING CISCO IP TELEPHONY & VIDEO, PART 1 V1.0 (CIPTV1) IMPLEMENTING CISCO IP TELEPHONY & VIDEO, PART 1 V1.0 (CIPTV1) COURSE OVERVIEW: Implementing Cisco IP Telephony & Video, Part 1 (CIPTV1) v1.0 is a five-day course that prepares the learner for implementing

More information

Implementing Cisco IP Telephony & Video, Part 1 CIPTV1 v1.0; 5 Days; Instructor-led

Implementing Cisco IP Telephony & Video, Part 1 CIPTV1 v1.0; 5 Days; Instructor-led Implementing Cisco IP Telephony & Video, Part 1 CIPTV1 v1.0; 5 Days; Instructor-led Course Description Implementing Cisco IP Telephony & Video, Part 1 (CIPTV1) v1.0 is a five-day course that prepares the

More information

Data Networking and Architecture. Delegates should have some basic knowledge of Internet Protocol and Data Networking principles.

Data Networking and Architecture. Delegates should have some basic knowledge of Internet Protocol and Data Networking principles. Data Networking and Architecture The course focuses on theoretical principles and practical implementation of selected Data Networking protocols and standards. Physical network architecture is described

More information

CCNP: Optimizing Converged Networks

CCNP: Optimizing Converged Networks CCNP: Optimizing Converged Networks Cisco Networking Academy Program Version 5.0 This document is exclusive property of Cisco Systems, Inc. Permission is granted to print and copy this document for noncommercial

More information

Implementing Cisco IOS Telephony and Unified Communications Express (IITUCX)

Implementing Cisco IOS Telephony and Unified Communications Express (IITUCX) Implementing Cisco IOS Telephony and Unified Communications Express (IITUCX) Course Objectives Explain the benefits and components of a Cisco Unified Communications system Describe how traditional telephony

More information

ehealth and VoIP Overview

ehealth and VoIP Overview ehealth and VoIP Overview Voice over IP (VoIP) configurations can be very complex. Your network could contain a variety of devices, applications, and configuration capabilities to support voice traffic.

More information

642-437- Implementing Cisco Voice Communications and QoS

642-437- Implementing Cisco Voice Communications and QoS Implementing Cisco Voice Communications and QoS Duration: 5 Days Course Code: CVOICE Version: 8 Overview: This course will provide delegates with knowledge of voice gateways, the characteristics of VoIP

More information

IMPLEMENTING CISCO IOS TELEPHONY AND UNIFIED COMMUNICATIONS EXPRESS (IITUCX)

IMPLEMENTING CISCO IOS TELEPHONY AND UNIFIED COMMUNICATIONS EXPRESS (IITUCX) Temario IMPLEMENTING CISCO IOS TELEPHONY AND UNIFIED COMMUNICATIONS EXPRESS (IITUCX) This course is designed to be the primary training for Cisco Unified Communications Manager Express and Cisco Unity

More information

Software-Powered VoIP

Software-Powered VoIP Software-Powered VoIP Ali Rohani Anthony Murphy Scott Stubberfield Unified Communications Architecture Core Scenarios UC endpoints QOE Monitoring Archiving CDR AOL Public IM Clouds Yahoo Remote Users MSN

More information

Cisco Multiservice IP-to-IP Gateway the Cisco IOS Session Border Controller

Cisco Multiservice IP-to-IP Gateway the Cisco IOS Session Border Controller Cisco Multiservice IP-to-IP Gateway the Cisco IOS Session Border Controller Cisco Unified Communications is a comprehensive IP communications system of voice, video, data, and mobility products and applications.

More information

Configuring the Sonus SBC 2000 with Cisco Unified Call Manager 10.5 for Verizon Deployment

Configuring the Sonus SBC 2000 with Cisco Unified Call Manager 10.5 for Verizon Deployment Configuring the Sonus SBC 2000 with Cisco Unified Call Manager 10.5 for Verizon Deployment Application Notes Rev 1.0 P/N 550-06690 Last Updated: October 26, 2015 Revision History Revision Date Revised

More information

640-460. IIUC Implementing Cisco IOS Unified Communications (IIUC) Version: Demo. Page <<1/9>>

640-460. IIUC Implementing Cisco IOS Unified Communications (IIUC) Version: Demo. Page <<1/9>> 640-460 IIUC Implementing Cisco IOS Unified Communications (IIUC) Version: Demo Page 1. You are CCNA VOICE associate in XXXX.com. You need configure a voice port that will allow the gateway to

More information

TECHNICAL CHALLENGES OF VoIP BYPASS

TECHNICAL CHALLENGES OF VoIP BYPASS TECHNICAL CHALLENGES OF VoIP BYPASS Presented by Monica Cultrera VP Software Development Bitek International Inc 23 rd TELELCOMMUNICATION CONFERENCE Agenda 1. Defining VoIP What is VoIP? How to establish

More information

Implementing Cisco IOS Telephony and Unified Communications Express (IITUCX)

Implementing Cisco IOS Telephony and Unified Communications Express (IITUCX) Implementing Cisco IOS Telephony and Unified Communications Express (IITUCX) Who should attend The primary audience for this course is as follows: Network administrators Network engineers Systems engineers

More information

Welltel - Session Border Controller SBC 120

Welltel - Session Border Controller SBC 120 SBC 120 Appliance Welltel - Session Border Controller SBC 120 enhanced performance, increased security Welltel s Session Border Controllers (SBCs) help enterprises to reduce communications costs, enable

More information

VoIP Configuration. Prerequisite Tasks CHAPTER

VoIP Configuration. Prerequisite Tasks CHAPTER CHAPTER 2 VoIP Configuration This chapter explains how to configure VoIP on your router and contains the following sections: Prerequisite Tasks Configuration Tasks Configure IP Networks for Real-Time Voice

More information

Integrating VoIP Phones and IP PBX s with VidyoGateway

Integrating VoIP Phones and IP PBX s with VidyoGateway Integrating VoIP Phones and IP PBX s with VidyoGateway Updated February 2011 INDEX: I. ABSTRACT.1 II. III. IV. VIDYOGATEWAY OVERVIEW.. 1 NETWORK TOPOLOGIES AND DEFINITIONS...2 CONNECTING TO VIDYOCONFERENCES

More information

AP200 VoIP Gateway Series Design Features & Concept. 2002. 3.5 AddPac R&D Center

AP200 VoIP Gateway Series Design Features & Concept. 2002. 3.5 AddPac R&D Center AP200 VoIP Gateway Series Design Features & Concept 2002. 3.5 AddPac R&D Center Contents Design Features Design Specifications AP200 Series QoS Features AP200 Series PSTN Backup Features AP200 Series Easy

More information

QoS Tools in the WAN. Need for QoS on WAN Links. Need for QoS in the WAN

QoS Tools in the WAN. Need for QoS on WAN Links. Need for QoS in the WAN QoS Tools in the WAN Need for QoS on WAN Links This topic defines the need for QoS in a WAN. Need for QoS in the WAN Voice must compete with data. Voice is real-time and must be sent first. Overhead should

More information

Packetized Telephony Networks

Packetized Telephony Networks Packetized Telephony Networks Benefits of Packet Telephony Networks Traditionally, the potential savings on long-distance costs was the driving force behind the migration to converged voice and data networks.

More information

Local Session Controller: Cisco s Solution for the U.S. Department of Defense Network of the Future

Local Session Controller: Cisco s Solution for the U.S. Department of Defense Network of the Future White Paper Local Session Controller: Cisco s Solution for the U.S. Department of Defense Network of the Future What You Will Learn The future of the Department of Defense s (DoD) networks focuses on the

More information

VOIP-211RS/210RS/220RS/440S. SIP VoIP Router. User s Guide

VOIP-211RS/210RS/220RS/440S. SIP VoIP Router. User s Guide VOIP-211RS/210RS/220RS/440S SIP VoIP Router User s Guide Trademarks Contents are subject to revise without prior notice. All trademarks belong to their respective owners. FCC Warning This equipment has

More information

EarthLink Business SIP Trunking. ININ IC3 IP PBX Customer Configuration Guide

EarthLink Business SIP Trunking. ININ IC3 IP PBX Customer Configuration Guide EarthLink Business SIP Trunking ININ IC3 IP PBX Customer Configuration Guide Publication History First Release: Version 1.0 August 30, 2011 CHANGE HISTORY Version Date Change Details Changed By 1.0 8/30/2011

More information

SSVVP SIP School VVoIP Professional Certification

SSVVP SIP School VVoIP Professional Certification SSVVP SIP School VVoIP Professional Certification Exam Objectives The SSVVP exam is designed to test your skills and knowledge on the basics of Networking, Voice over IP and Video over IP. Everything that

More information

ISG50 Application Note Version 1.0 June, 2011

ISG50 Application Note Version 1.0 June, 2011 ISG50 Application Note Version 1.0 June, 2011 Scenario 1 - ISG50 is placed behind an existing ZyWALL 1.1 Application Scenario For companies with existing network infrastructures and demanding VoIP requirements,

More information

Dial Peer Configuration Examples

Dial Peer Configuration Examples Dial Peer Configuration Examples This appendix contains a series of configuration examples featuring the minimum required components and critical Cisco IOS command lines extracted from voice gateway configuration

More information

Version dated 25/11/2014. 1.Course Title. NATO Voice over IP Foundation Course. 2.Identification Number (ID) 3. Purpose of the Course

Version dated 25/11/2014. 1.Course Title. NATO Voice over IP Foundation Course. 2.Identification Number (ID) 3. Purpose of the Course 1.Course Title Version dated 25/11/2014 NATO Voice over IP Foundation Course 2.Identification Number (ID) 095 3. Purpose of the Course There are a number of new technologies (to NATO) that are encompassed

More information

1. Public Switched Telephone Networks vs. Internet Protocol Networks

1. Public Switched Telephone Networks vs. Internet Protocol Networks Internet Protocol (IP)/Intelligent Network (IN) Integration Tutorial Definition Internet telephony switches enable voice calls between the public switched telephone network (PSTN) and Internet protocol

More information

"Charting the Course... Implementing Cisco IP Telephony & Video, Part 1 v1.0 ( CIPTV1 ) Course Summary

Charting the Course... Implementing Cisco IP Telephony & Video, Part 1 v1.0 ( CIPTV1 ) Course Summary Description Course Summary Implementing Cisco IP Telephony & Video, Part 1 (CIPTV1) v1.0 is a five-day course that prepares the learner for implementing a Cisco Collaboration solution at a single-site

More information

AT&T IP Flex Reach/ IP Toll Free Configuration Guide IC 3.0 with Interaction SIP Proxy

AT&T IP Flex Reach/ IP Toll Free Configuration Guide IC 3.0 with Interaction SIP Proxy INTERACTIVE INTELLIGENCE AT&T IP Flex Reach/ IP Toll Free Configuration Guide IC 3.0 with Interaction SIP Proxy Version 1.7 9/2/2009 TABLE OF CONTENTS 1 AT&T... 5 1.1 Introduction... 5 1.2 Product Descriptions...

More information

Voice over IP (VoIP) for Telephony. Advantages of VoIP Migration for SMBs BLACK BOX. 724-746-5500 blackbox.com

Voice over IP (VoIP) for Telephony. Advantages of VoIP Migration for SMBs BLACK BOX. 724-746-5500 blackbox.com Voice over IP (VoIP) for Telephony Advantages of VoIP Migration for SMBs BLACK BOX Hybrid PBX VoIP Gateways SIP Phones Headsets 724-746-5500 blackbox.com Table of Contents Introduction...3 About Voice

More information

Implementing Cisco IP Telephony & Video, Part 1

Implementing Cisco IP Telephony & Video, Part 1 Course Code: CI-CIPTV1 Vendor: Cisco Course Overview Duration: 5 RRP: 2,320 Implementing Cisco IP Telephony & Video, Part 1 Overview Implementing Cisco IP Telephony & Video, Part 1 (CIPTV1) v1.0 is a five-day

More information

Need for Signaling and Call Control

Need for Signaling and Call Control Need for Signaling and Call Control VoIP Signaling In a traditional voice network, call establishment, progress, and termination are managed by interpreting and propagating signals. Transporting voice

More information

Convergence Technologies Professional (CTP) Course 1: Data Networking

Convergence Technologies Professional (CTP) Course 1: Data Networking Convergence Technologies Professional (CTP) Course 1: Data Networking The Data Networking course teaches you the fundamentals of networking. Through hands-on training, you will learn the vendor-independent

More information

SIP Trunking Manual 05.15. Technical Support Web Site: http://ws1.necii.com (registration is required)

SIP Trunking Manual 05.15. Technical Support Web Site: http://ws1.necii.com (registration is required) SIP Trunking Manual 05.15 Technical Support Web Site: http://ws1.necii.com (registration is required) This manual has been developed by NEC Unified Solutions, Inc. It is intended for the use of its customers

More information

EarthLink Business SIP Trunking. NEC SV8100 IP PBX Customer Configuration Guide

EarthLink Business SIP Trunking. NEC SV8100 IP PBX Customer Configuration Guide EarthLink Business SIP Trunking NEC SV8100 IP PBX Customer Configuration Guide Publication History First Release: Version 1.0 August 30, 2011 CHANGE HISTORY Version Date Change Details Changed By 1.0 8/30/2011

More information

Introduction to Packet Voice Technologies and VoIP

Introduction to Packet Voice Technologies and VoIP Introduction to Packet Voice Technologies and VoIP Cisco Networking Academy Program Halmstad University Olga Torstensson 035-167575 olga.torstensson@ide.hh.se IP Telephony 1 Traditional Telephony 2 Basic

More information

EarthLink Business SIP Trunking. Toshiba IPedge Customer Configuration Guide

EarthLink Business SIP Trunking. Toshiba IPedge Customer Configuration Guide EarthLink Business SIP Trunking Toshiba IPedge Customer Configuration Guide Publication History First Release: Version 1.0 August 30, 2011 CHANGE HISTORY Version Date Change Details Changed By 1.0 8/30/2011

More information

Cisco IOS Software Release 12.4(6)XE

Cisco IOS Software Release 12.4(6)XE Product Bulletin No. 3514 Cisco IOS Software Release 12.4(6)XE PRODUCT OVERVIEW This product bulletin provides content and delivery information for Cisco IOS Software Special Release 12.4(6)XE. It should

More information

VOICE over IP H.323 Advanced Computer Network SS2005 Presenter : Vu Thi Anh Nguyet

VOICE over IP H.323 Advanced Computer Network SS2005 Presenter : Vu Thi Anh Nguyet VOICE over IP H.323 Advanced Computer Network SS2005 Presenter : Vu Thi Anh Nguyet 1 Outlines 1. Introduction 2. QoS in VoIP 3. H323 4. Signalling in VoIP 5. Conclusions 2 1. Introduction to VoIP Voice

More information

ATA: An Analogue Telephone Adapter is used to connect a standard telephone to a high-speed modem to facilitate VoIP and/or calls over the Internet.

ATA: An Analogue Telephone Adapter is used to connect a standard telephone to a high-speed modem to facilitate VoIP and/or calls over the Internet. KEY VOIP TERMS 1 ACD: Automatic Call Distribution is a system used to determine how incoming calls are routed. When the ACD system receives an incoming call it follows user-defined specifications as to

More information

Voice Over IP. Priscilla Oppenheimer www.priscilla.com

Voice Over IP. Priscilla Oppenheimer www.priscilla.com Voice Over IP Priscilla Oppenheimer www.priscilla.com Objectives A technical overview of the devices and protocols that enable Voice over IP (VoIP) Demo Packet8 and Skype Discuss network administrator

More information

Peer-to-Peer SIP Mode with FXS and FXO Gateways

Peer-to-Peer SIP Mode with FXS and FXO Gateways Peer-to-Peer SIP Mode with FXS and FXO Gateways New Rock s SIP based VoIP gateways with FXS and FXO ports support peer-to-peer mode which has many applications in deploying enterprise multi-site telephone

More information

The Basics. Configuring Campus Switches to Support Voice

The Basics. Configuring Campus Switches to Support Voice Configuring Campus Switches to Support Voice BCMSN Module 7 1 The Basics VoIP is a technology that digitizes sound, divides that sound into packets, and transmits those packets over an IP network. VoIP

More information

EdgeMarc 4508T4/4508T4W Converged Networking Router

EdgeMarc 4508T4/4508T4W Converged Networking Router Introduction The EdgeMarc 4508T4W combines multiple voice and data features into a single, easy to use converged networking router. It includes models that have up to 4 T1 WAN interfaces or a single Ethernet

More information

VoIP: How to Plan for the Bandwidth and Calculate the Cost Savings

VoIP: How to Plan for the Bandwidth and Calculate the Cost Savings Expert Reference Series of White Papers VoIP: How to Plan for the Bandwidth and Calculate the Cost Savings 1-800-COURSES www.globalknowledge.com VoIP: How to Plan for the Bandwidth and Calculate the Cost

More information

Networking 4 Voice and Video over IP (VVoIP)

Networking 4 Voice and Video over IP (VVoIP) Networking 4 Voice and Video over IP (VVoIP) Course Objectives This course will give delegates a good understanding of LANs, WANs and VVoIP (Voice and Video over IP). It is aimed at those who want to move

More information

EarthLink Business SIP Trunking. Switchvox SMB 5.5 & Adtran SIP Proxy Implementation Guide

EarthLink Business SIP Trunking. Switchvox SMB 5.5 & Adtran SIP Proxy Implementation Guide EarthLink Business SIP Trunking Switchvox SMB 5.5 & Adtran SIP Proxy Implementation Guide Publication History First Release: Version 1.0 April 20, 2012 CHANGE HISTORY Version Date Change Details Changed

More information

Quality of Service Analysis of site to site for IPSec VPNs for realtime multimedia traffic.

Quality of Service Analysis of site to site for IPSec VPNs for realtime multimedia traffic. Quality of Service Analysis of site to site for IPSec VPNs for realtime multimedia traffic. A Network and Data Link Layer infrastructure Design to Improve QoS in Voice and video Traffic Jesús Arturo Pérez,

More information

VOICE SERVICES AND AVIATION DATA NETWORKS

VOICE SERVICES AND AVIATION DATA NETWORKS VOICE SERVICES AND AVIATION DATA NETWORKS Anuj Bhatia, Anant Shah, Nagaraja Thanthry, and Ravi Pendse, Department of Electrical and Computer Engineering, Wichita State University, Wichita KS Abstract The

More information

Requirements of Voice in an IP Internetwork

Requirements of Voice in an IP Internetwork Requirements of Voice in an IP Internetwork Real-Time Voice in a Best-Effort IP Internetwork This topic lists problems associated with implementation of real-time voice traffic in a best-effort IP internetwork.

More information

Application Notes Rev. 1.0 Last Updated: February 3, 2015

Application Notes Rev. 1.0 Last Updated: February 3, 2015 SBC 1000/2000 Series Configuration Guide with Cisco Unified Call Manager v8.6 for Level 3 Voice Complete SM Deployments Application Notes Rev. 1.0 Last Updated: February 3, 2015 Contents 1 Document Overview...

More information

12 Quality of Service (QoS)

12 Quality of Service (QoS) Burapha University ก Department of Computer Science 12 Quality of Service (QoS) Quality of Service Best Effort, Integrated Service, Differentiated Service Factors that affect the QoS Ver. 0.1 :, prajaks@buu.ac.th

More information

ADTRAN SBC and Cisco Unified Call Manager SIP Trunk Interoperability

ADTRAN SBC and Cisco Unified Call Manager SIP Trunk Interoperability 6AOSSG0004-42A April 2013 Interoperability Guide ADTRAN SBC and Cisco Unified Call Manager SIP Trunk Interoperability This guide describes an example configuration used in testing the interoperability

More information