SIP Essentials
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| Duration: 2 Days |
Who Should Attend
This course is designed for enterprise executive and technical managers, channel partners, VARs (Value-Added Resellers), systems integrators, telephone interconnect, agents, master agents and consultants. In addition, this course will benefit corporate technical staff, marketing, training business development, sales, channel managers, operations, engineering, support and other corporate managers for SIP-VOIP providers, carriers, software developers and hardware manufacturers.
What You Will Learn:
- Review the fundamentals of the Internet Protocol (IP) and platforms required for high performance SIP-VOIP systems. This includes soft switches, gateways, routers, services and other critical components.
- Explore business applications and opportunities. Review what customers are buying today and why they are buying. In addition, emerging killer applications will be explained in depth.
- Quickly grasp complex subjects such as H.323, MGCP and SIP. As SIP (Session Initiation Protocol) emerges as the key VOIP communications protocol, discover how this technology will impact all voice communications systems, from key, PBX, and IP-PBX to hosted, managed and other systems.
- Understand basic and advanced SIP-VOIP concepts and features. From hosted and managed to IAS and IP-PBX, quickly understand what’s-what for different customer applications and business models.
- Probe the issues behind integrated and converged access. Understand when and why organizations need a converged access solution.
- Understand why network assessment is critical to any SIP-VOIP implementation and why this step cannot be overlooked.
- Address the issue of Quality of Service (QOS) by understanding how to overcome jitter, echo, noise and other network problems. Review the role of RTCP and other tools to monitor and maintain high-performance VOIP networks.
- Understand the functions of the new communications toolbar. See how the benefits of unified communications improve business operations.
- Assess the top 10 reasons why SIP trunking and hosted VOIP is more than ‘dial-tone,’ and how it can encourage change in the business and the business model of even the smallest enterprises. Discuss and explore new ways to improve fundamental business processes.
- Explore how a SIP-VOIP call is processed and review potential security attacks. Discover how SPIT, VOMIT, DOS and other terrorist attacks can target not just data, but voice packets.
- Review SIP and SIP Trunking and all the implications and applications from Total Cost of Ownership (TCO) to QOS. SIP Trunking is the most profound new form of telecommunications since POTS.
A. Fundamental Network and IP Technologies—the IP in SIP
- Voice to digital to packet transmission with introduction to codecs
- Optical fiber bandwidth
- Transmission concepts—T1, PRI, SIP trunking
- Integrated access services—dynamic bandwidth allocation
- Introduction to Internet Protocol
- Back to basics—cabling and electrical
- TCP/IP and other protocols and layers: RTP, RTCP, SDP, SOAP, SALT
- Hardware—routers, IP switches, MAC and WiFi VLAN/VPNs
- Protocols—H.228, H.323, MGCP and SIP plus desktop “softphones” and toolbars: “end points”
- IP-PBX and hosted: bringing it all together
B. Top-10 Critical Technologies to SIP
- IP protocol, IP networking and a VPN
- The difference between Integrated Access Service (IAS) and Converged Access Service: Enhanced IAS with Multi-link Point-to-Point Protocol (MPPP), Multilink Protocol (MP), Layer 2 Tunneling Protocol (L2TP)
- SIP trunking
- Justification for an IP PBX—options and approaches
- Technical difference between IAS and hosted and managed VOIP—Call processing with route, image, DHCP, DNS, configuration servers
- Open source PBX options
- Quality of Service (QOS)—its importance, how to measure it and fix it
- Softphones—Where they make sense, user benefits
- The difference between Internet Protocol Telephony (IPT) and VOIP—Cisco, Broadsoft, Sylantro and other platforms
- Unified Communications—mobility applications
C. Top-10 Steps to a Successful SIP Implementation
- User needs assessment
- Network assessment
- Systems upgrade: In-depth Power over Ethernet (POE) and comprehensive disaster planning tutorial
- Pre-installation planning
- Data Systems Integration: VLANs, VoWLANS, Planning for WiFi, WiFi and IP wireless roaming, WiFi security and more
- Installation and cutover
- Managing change: training
- Ongoing use and expectations
- Billing
- Managed services: Total cost of ownership (TCO), monitoring, remote support, training, business development and others, as well as future applications
D. Diagnosing and Tools for Troubleshooting SIP Networks
- Problems
- Testing for problems
- Potential solutions
- Best practices: Resiliency and reliability—QOS in VOIP-SIP implementation
- Vendors of technical solutions for VOIP network management
- Conclusions and the bottom line
E. SIP Essentials—SIP Introduction and Overview
- SIP Definition—IETF (RFC-3261) and Manufacturers
- Call Processing Language (CPL)
- Address Of Record (AOR )—q-values
- Location service: Domain Name Service (DNS)
- Call Processing Language (CPL)
- Back-2-Back User Agent (B2BUA)
- SIP-Signaling System 7 SS7) call processing including: Initial Address Message (IAM), Routing label, Circuit Identification Code (CIC) and Message Type Code. Message Type Codes include: Called Number, Calling Number, Destination Point Code (DPC), Origination Point Code (OPC), SS7-ISUP Address Complete Message (ACM), ANswer Message (ANM), Call ProGress (CPG) Message, COTinuity Message (COT), SUSpend Message (SUS), RESume Message (RES), FOrward message Transfer (FOT), INformation Request message (INR), INFormation message (INF), RELease (REL), and others
- SIP: Applications Layer 7 Protocol—Peer-to-Peer protocol
- SIP: Before and after
- SIP and Hosted: Better or borse or both
- SIP Signaling: Introduction, Uniform Resource (URI)
- SIP and Session Border Controllers (SBC), servers, gateways,
- SIP with and without Integrated Access Devices (IADs)
- SIP and SIP phones, softphones, mobility
- SIP Signaling Basics—Inbound/Outbound calling
- SIP Trunking—Incremental “Slope” Growth
- Codecs (compression-decompression signal processors)—issues and answers
F. SIP Trunk Replacement and Disaster Planning
- SIP and open standards
- SIP and trunk replacement—same or different thing?
- SIP and proxy Address Resolution Protocol (ARP)
- SIP and Hot Standby Routing Protocol (HSRP)
- SIP and Multi-Protocol Label Switching (MPLS)—COS and QOS
- SIP QOS—oxymoron or critical concept
- SIP on-net and off-net issues—overflow call processing
- SIP Total Cost of Ownership (TCO)—Top 10 benefits
G. SIP Technology in Depth
- SIP—Open Systems Interconnection (OSI)—“If you do not know where you are going, what difference does it make which path you take” (The Cheshire Cat—Alice in Wonderland)
- SIP “methods”—writing call processing as easy as email: invite, ACK, bye, etc.
- SIP signaling “commands”—1xx-6xx
- SIP inbound and outbound call processing
- Session Description Protocol Security Descriptions (SDES)
- SIP features: Forks, SIP Proxy, Redirect, Presence, Forking—parallel-sequential-mixed, loops, spirals
- SIP network devices: User Agent (UA), User Agent Client (UAC), User Agent Server (UAS), Proxy Server, Redirect Server, Registrar Server, Back-to-Back User Agent (B2BUA)
- Secure Real-time Transport Protocol (SRTP--RFC-3711)
- Authentication Tag and the Master Key Identifier
- Encryption
H. SIP Security Best Practices—Reality Check
- SIP security best practices—overview
- SIP firewalls and security—SPIT (SPam over Internet Telephony), DOS (Denial of Service), VOMIT-(Voice over Misconfigured Internet Telephony) and other emerging problems
- SIP security and “access policy”—Stateful IP filtering and inspection, static and stateless IP filters, Transport Layer Security (TLS), Network Address Translation (NAT), Persistent connection, Multi-homed hosts, etc.
- SIP and Man-In-the-Middle (MIM) attacks—Understanding wireline and WiFi wireless attacks
- Telephone numbers—North American Numbering Plan and International ENUM: E.164
I. SIP Security Architectures—Building Blocks
- SIP security architectures—eight different VOIP configurations evaluating SIP-aware firewalls and other security options:
- Type 1: Dedicated IP pipe for VOIP
- Type 2: Merged MPLS pipe with LER tagging VOIP
- Type 3: Merged IP pipe with SIP-aware firewall (SAFW)
- Type 4: Separate IP pipe for VOIP with existing non-SIP firewall and SIP-aware firewall (SAFW)
- Type 5: Merged IP pipe with incumbent non-SIP-aware firewall, no DMZ port and SIP-aware firewall (SAFW)
- Type 6: Looks like Type 5 but merged IP pipe with incumbent non-SIP-aware firewall, no DMZ Port and SIP-aware firewall
- Type 7: Merged IP pipe with incumbent non-SIP-aware firewall with a DMZ port
- Type 8: Merged IP pipe with incumbent non-SIP-aware firewall
- Other approaches to SIP security—proxy/gateway inside the firewall, proxy/gateway in co-edge mode and proxy/gateway outside the firewall, how firewalls add time delays to TCP/IP
J. SIP Class of Service and Quality of Service
- SIP Class of Service (COS ) and Quality of Service (QOS )—Ethernet meets “smart” IP
- Managing “real-time” voice with RTCP Metrics Report Blocks (MRB)
- Inside MRB—what’s what with all the info
K. SIP Applications and Future Outlook
- SIP applications:
- Instant Messaging (IM) call screening
- SIP presence communicated by IM
- Click-to-call and others
- SIP for call centers—calling options and pricing benefits
- Event notification
- On-demand conferencing
- Integration of additional “third-party” developed SIP-enhanced services provides additional business and enterprise justification for SIP trunking.
- Universal Description, Discovery and Integration (UDDI ) uses standards-based services such as XML, HTTP, SOAP, TCP/IP uniform service description and service discovery protocol. Discovery services provide a consistent publishing interface and allow programmatic discovery (registration) of services. Description services provide the means for internet registration to be found but not advertisement or placement on search engine listings. UDDI file structures are designed using a “publish-once-read-by-many” concept. That is, a web site URL (uniform resource locator) can be designed using UDDI standard file structures that can be published to the UDDI server network. The UDDI network can be accessed (discovered) by search engines, customers and other list builders in a standard published (register) format. UDDI Registries and protocol servers with:
- White pages: Name, address, contact and vcard information
- Yellow pages: Industry categorizations and taxonomies
- Green pages: Technical information including internal URL file discovery structures
- UDDI is also designed to replace the robot.txt search engine web site document structure concept. Here are some of the web site description-discovery-registry information retrieved by search engine spiders/bots and other retrieval programs.
- Voice-driven yellow pages—SALT (Speech Applications Language Tags) adds voice commands to web applications. SALT is an extended set of markup (meta) tags based on XML (extensible markup language), though compatible with HTML (hypertext markup language) and others.
- SIP—exciting new applications
- SIP total tutorial with future outlook—IP Multimedia Systems (IMS), content servers, wireless integration, media gateways, etc.
Course Leaders:
Thomas B. Cross, CEO TECHtionary.com, has three decades of experience in startups and as consulting advisor for leading providers and venture capital companies in market planning and development, hardware/software design and development, project management, intellectual property in telecommunications, information technology, conferencing, teletraining, telecommuting, groupware, networks, call centers, internet, artificial intelligence and other fields. He has managed the successful development of more than 10 software, hardware and internet products to market and received industry awards for this work. He has written 13 books, written, produced and directed 15 commercial videos and created and produced the world's largest animated knowledge source on technology—http://www.techtionary.com—recipient of Web Hosting Magazine Editors Choice for Best Technical Help.
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