Difference between SIP calling, trunking, and forwarding
Before we get under the skin of SIP and the various terms in the SIP realm, it is necessary to understand the various flavors of SIP. Any discussion on SIP is bound to bring up the terms SIP calling, SIP trunking and SIP forwarding.
Here is what makes each one different from the other:
The process of sending/receiving a VoIP call containing voice, text, or multimedia elements is referred to as SIP calling.
The method of SIP calling where a SIP “trunk” is placed over the internet connection for telecommunication is SIP trunking.
The act of forwarding or redirecting of incoming SIP calls to another SIP location or phone number is SIP forwarding.