Voice-Enabling the Data Network: H.323, MGCP, SIP, QoS, SLAs, and Security

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by: James F. Durkin

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On-line Price: $84.95 (includes GST) Hardcover package 224 20%Off Retail Price You save: $21.00 TBA - Price Subject to Change. _____________________ N.Sydney : On Order (reserve your copy)	Retail Price: $105.95 Publisher: CISCO PRESS,Sep-2002 Category: CISCO ROUTING Level: ISBN: 1587050145 ISBN13: 9781587050145
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Summary

      Understand Voice over IP components and design practices for new or migrated VoIP networks

  Voice-Enabling the Data Network helps you understand:

  Migration steps away from a pure circuit-switched TDM architecture to an IP-based network to support VoIP services

How to design and implement a large-scale VoIP network

QoS architectures and mechanisms to consider when provisioning bandwidth in a VoIP network

Common signaling types used to interconnect a VoIP gateway to a PSTN switch

Security measures that need to be implemented in a VoIP network: H.323 RAS Authentication, Network Access Security, and Device Security

Considerations when implementing a network management system to meet the customer's expectations of quality and reliability of the VoIP service-the Service Level Agreement

How H.323 VoIP networks, MGCP networks, and SIP networks coexist

Key components of VoIP solutions to help make appropriate business decisions when initiating a VoIP network project

Voice over IP (VoIP) is a fast-growing technology within telecommunications companies, Internet service providers, and other companies seeking to migrate from traditional circuit-switched TDM networks. To enable successful migration to and design of VoIP networks, Voice-Enabling the Data Network provides a comprehensive overview of the various building blocks of VoIP networks.

  Voice-Enabling the Data Network describes the key steps in designing an operational VoIP network, thereby enabling network designers, managers, engineers, and CTOs to understand how the technology is applied. This book covers such essential topics as H.323, SIP, and MGCP architectures; QoS design considerations; Service Level Agreements (SLAs); and security considerations.

  With an emphasis on service providers, Voice-Enabling the Data Network covers how to provide a scalable and highly available VoIP network. You learn from timely discussions on unique VoIP topics and emerging technologies as you gain fundamental knowledge and understanding of all the important VoIP components and services that should be considered in the design of a VoIP network.

  James F. Durkin has 13 years of experience in the industry with voice and data technologies. Jim has real-world experience in designing and deploying VoIP solutions on a worldwide basis. He has led teams in deploying one of the first international-based wholesale VoIP networks in Japan, Germany, and the Czech Republic. He was a principal representative for the following standards organizations: ANSI T1S1, the Network Management Forum, and the ATM Forum. Currently, Jim works as a systems engineer for Cisco Systems(r) focused on selling and supporting optical network solutions. Jim has bachelor's and master's degrees in electrical engineering from the Georgia Institute of Technology.

          Author Bio

      James F. Durkin has been working in the industry with voice and data technologies for over 13 years. Jim graduated from Georgia Institute of Technology with bachelor's and master's degrees in electrical engineering. Jim worked for Hitachi Telecom and for Scientific Research Corporation as a systems engineer, designing and supporting multiservice networks and network management systems. He was a principal representative for the following standards organizations: ANSI T1S1, Network Management Forum, and ATM Forum. Currently, Jim works as a systems engineer for Cisco Systems responsible for selling and supporting optical network solutions.

Table of Contents

1. The Telephony Service Provider: An Overview.

  Motivation for IP and Voice Convergence. VoIP Services on the Rise. Wholesale VoIP Service. Retail VoIP Service. Successful VoIP Deployments. The VoIP Network Architecture: Gateways and Gatekeepers. Seven Steps in Designing and Implementing a VoIP Network. Summary.

      2. VoIP Network Architectures: H.323, SIP, and MGCP.

  H.323 VoIP Network Architecture. H.323 VoIP Services. H.323 VoIP Architecture Components. Gateway. Gatekeeper. Gateway and Gatekeeper Signaling. RAS. H.225. H.245. RTP. Directory Gatekeeper. SS7 Interconnection (PGW 2200 and SLT). VoIP Application Servers. SIP Network Architecture. SIP Network Services. SIP Network Architecture Components. SIP User Agents. SIP Gateways. SIP Servers. SIP Signaling Messages. H.323 and SIP Network Interworking. Softswitch Network Architecture. Softswitch Network Services. Softswitch Architecture Components. Softswitch. Call Agent Signaling. Gateways. Aggregation and Edge Routers. Feature Servers. Summary.

      3. Offering Wholesale VoIP Services.

  Migrating Toward a VoIP Infrastructure. Wholesale Peering Arrangements. Call Routing. SS7 Interconnection to the PSTN. VoIP Billing Systems. Summary.

      4. Offering Bundled Voice and Data Services.

  Overview of Managed Voice and Data Services. Integrated Access Architectures. Managed Voice and Data Services Using AAL2. Fundamentals of AAL2. Summary.

      5. QoS Considerations in VoIP Network Design.

  IP Network Characteristics. Delay. Jitter. Packet Loss. Using QoS to Support VoIP Services. Choosing the Right QoS Approach. Overprovisioning. IntServ. DiffServ. QoS Building Blocks. Using DiffServ for VoIP Services: The EF Behavior. Implementing the EF Behavior. Dial Peer and NBAR. CB-Marking. QPPB: QoS Policy Propagation Through BGP. Congestion Management Using LLQ for VoIP. Avoiding Congestion in VoIP Networks. CAC for VoIP Networks. Local CAC. Network CAC. RSVP CAC. MPLS Supporting Voice. MPLS TE. Fast Re-Route for Voice. Summary.

      6. Implementing the PSTN Switch/VoIP Gateway Trunk.

  Overview of VoIP Gateway to PSTN Connectivity. Circuit Types. Signaling Types. Case Study: JIT VoIP Network. T1, E1, and DS3 Fundamentals. Using T1s to Interconnect to the PSTN. Using E1s to Interconnect to a PSTN. Using DS3s to Interconnect to the PSTN. T1 CAS Trunks. T1 CAS Trunk Template. Signal Type. Line Code Method. Framing Mode. Incoming and Outgoing Digit Format. PRI Trunks. Q.921. Q.931. PRI Trunk Template. ISDN Variant. NFAS. Digit Sending Method. Incoming and Outgoing Digit Format. SS7 to Interconnect to the PSTN. SS7 Trunk Template. Mode. ISUP Variant. Signaling Speed. Signaling Channel. Point Codes. Network Indicator. CIC Mapping. Troubleshooting Techniques. Ensure Line Is up and Correct Synchronization and Clocking. Ensure D Channel Is up and Correct PRI Signaling. Ensure No Alarms. Loopback Test. CAS Troubleshooting. Summary.

      7. Gateway and Gatekeeper Design Requirements.

  Gateway and Gatekeeper Design. Traffic Engineering. Erlangs. Trunk Sizing. Zones. Dial Peers. Normalization Rules. Dial Plan Administration. Gatekeepers and Directory Gatekeeper Sizing. High-Availability VoIP Network. Gateway High Availability. Gatekeeper High Availability. DGK High Availability. Troubleshooting Gateways and Gatekeepers. Summary.

      8. Security Considerations for VoIP Networks.

  H.323 RAS Authentication. Network Access Security. Device Security. Using IPSec for Additional Security. Summary.

      9. Network Management: Maintaining an SLA.

  Overview of Management Layers. VoIP SLA Management Architecture. Database. Probes and Local Collection Engine. Archive and Reporting Database. Trouble Ticket Application. Collecting the VoIP Management Data. Identifying the Data to Calculate the VoIP SLA Indicators. VoIP Management Data Sources: SNMP MIBs and Traps. VoIP Management Data Sources: Syslog and ASCII Message Collection. VoIP Management Data Sources: Relational Database and Trigger Collection. VoIP Management Data Sources: SA Agent Collection. VoIP Management Data Sources: NetFlow. Filtering and Correlating the Collected Data. Presenting and Reporting the Data. Summary.