Blog Archives for category Tutorial

C# Tutorial for absolute beginners

If you are new to programming and want to learn C#, you can learn programming fundamentals here. Very good resource… Continue reading »

Calculate MD5 hash from a string

It is a common practice to store passwords in databases using a hash. MD5 (defined in RFC 1321) is a… Continue reading »

SIP Tutorial Part 3 – Commands

INVITE :Invites a user to a call ACK : Acknowledgement of the request. BYE :Terminates a connection between users CANCEL… Continue reading »

SIP Tutorial Part 2– Components

SIP elements are as below User Agent: The user agent resides in every SIP end station. It acts in two… Continue reading »

SIP Tutorial for beginners – Part I

SIP (Session Initiation Protocol) is a signalling protocol used to create, manage and terminate sessions in an IP based network. … Continue reading »