Description: SIP-I, or Session Initiation Protocol for ISDN (Integrated Services Digital Network), is an extension of the SIP protocol that allows the transport of ISUP (ISDN User Part) signaling. This protocol is primarily used in the interconnection of telecommunications networks, facilitating communication between different signaling systems. SIP-I combines the capabilities of SIP, which is a widely used signaling protocol in VoIP (Voice over Internet Protocol), with the functionality of ISUP, which is essential for signaling in traditional telephone networks. The main feature of SIP-I is its ability to transport call signaling information and other related data, enabling telecommunications operators to integrate voice and data services more efficiently. This is particularly relevant in environments where traditional telephone networks and VoIP coexist, as SIP-I acts as a bridge between both technologies, ensuring interoperability and service continuity. Additionally, SIP-I allows the transmission of additional information, such as caller identification and resource management, which enhances the quality and reliability of communications.
