SIP Switch is a Softswitch that works with the SIP protocol.

It is a call transferring mechanism where the phone signals are delivered to the intended destination.

It may take the role of being a bridge between VoIP and PTSN calls.

SIP Softswitches, as the name suggests, runs with the help of Session initiation protocol (SIP).

Apart from connecting voice calls, an SIP Switch helps in the transfer of multimedia messages as well.

Interactions in the forms of voice and video conferencing are also done with the help of this protocol.

This particular switch, rather than using a traditional PSTN, uses various servers to place calls.

Furthermore we can connect a PSTN number to an SIP system and thus works as a transfer mechanism between two points.

SIP switch can be considered a type of VoIP Softswitch.

VoIP is a wider term and refers to the technology that makes all internet communication possible

SIP on the other hand, is one among the many protocols that come under VoIP.

Therefore we can say that SIP Switch is a type of VoIP Softswitch that makes use of the SIP protocol to function.

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