SIP Diversion Field – Avaya SBC – 603 Decline

4 steps to correct and update your SBC server to allow calls through

SIP Diversion Field by Wellington Paez

SIP Diversion Field – Avaya SBC – 603 Decline 4 steps to correct and update your SBC server to allow calls through By the end of this post, “SIP Diversion Field – Avaya SBC – 603 Decline”, you get to understand why a particular number is rejected from the Service Provider or ITSP with a […]

Ethernet LANs & IP Office Networking

5 techniques to optimize and understand IP Office Networks

Ethernet LANs & IP Office Networking_WellingtonPaez

Ethernet LANs and IP Office Networking 5 techniques to optimize and understand IP Office Networks In this post, Ethernet LANs and IP Office Networking , see how to prepare your customer’s network to help optimize both the Avaya IP Office and the Customer’s LAN. Create network traffic rules to avoid loops, delay and collision in the […]

Avaya PBX Move – Best Practices

6 strategies to help you succeed and make your customer love you

Avaya PBX Move by Wellington Paez

Avaya PBX Move – Best Practices 6 strategies to help you succeed and make your customer love you By the time you finish reading this post, you will realize what to complete in order to have a successful Avaya PBX move. Learn which steps I took that helped me impress the customer’s IT Team, which […]

SIP Demystified Book

SIP Demystified – Session Initiation Protocol (McGraw-Hill)

SIP Demystified

The SIP Demystified by Gonzalo Camarillo is a great resource for those telecom enthusiasts, and those starting their journey with the Session Initiation Protocol. I first learned about the book through webinars conducted by Avaya Tier 3 support engineers. I use this book as a reference whenever I need to refresh on anything about SIP.

The book overviews the analogy of the Session Initiation Protocol, as well as explaining how voice was originated, from explaining FDM, TDM, Trunk Signaling. The birth of Circuit Switching, it also explains strengths, and weaknesses of the Circuit Switched network.

Explaining  the Internet Layer or the TCP/IP  Protocol Suite, how this suite of protocols played part for the creation of the Session Initiation Protocol. Covering an array of VoIP topics, from QoS with Differentiated Services, Session Announcement Protocol, among others.

It also provides an overview of the following topics=

  • Interoperability
  • Scalability
  • SIP as a Platform Creation

Giving you the different types of SIP Operation by describing “SIP Requests”. Breaking down SIP Messages, its server and proxies. An all this book breaks down all you really need to know to start working with SIP.