The Trunk Gateway provides an access interface between traditional Public Switched Telephone Network (PSTN) circuit-based networks and packet networks. Examples of the PSTN trunk interfaces are Integrated Services Digital Network (ISDN) User Part (ISUP), Primary Rate Interface (PRI), Multi Frequency (MF) and Digital Tone Multi Frequency (DTMF). The Trunk Gateway may also support an interface for line based Generic Requirement… (Read More →)

A protocol for network interworking which supports communication between adjacent networks and communication thru transit networks.