VoLTE Basic Self-Learning Series | What is Forking in SIP and IMS

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The meaning of Forking in SIP network

In simple terms, SIP Forking refers to sending a SIP call to multiple SIP endpoints at the same time.

This also means that multiple SIP endpoints will ring simultaneously when called.

A wide range of usage scenarios, such as: the secretary can answer the phone for the boss...

SIP Forking is divided into two categories

• Parallel Forking

  • The feature is that multiple called terminals ring at the same time, and the one connected first comes to talk to the calling party.

• Sequential Forking

  • The characteristic is that the called terminal 1 rings first, the terminal 1 is busy, and then transfers to the terminal 2 to answer.

Classification of Parallel Forking

Classification of Sequential Forking