Administration of the Avaya G350 Media Gateway - Avaya Support

Serial interface overviewSerial interface overviewA serial interface is a virtual interface that is created over a portion of an E1/T1 or USP port on aWAN media module. Serial interfaces support PPP and frame relay encapsulation protocols.Figure 1: Layer 1 T1 Port on page 83 illustrates a Layer 1 T1 port with two Channel Groupsdefined. All data from each Channel Group is encapsulated using PPP protocol, and isdistributed over the multiple IP interfaces defined for each Channel Group.Figure 1: Layer 1 T1 PortFigure 2: E1/T1 Port Channel Group on page 83 illustrates an E1/T1 port Channel Group. Alldata from the Channel Group is encapsulated using frame relay protocol. The data is sent via aframe relay serial interface and Sub-interfaces over the multiple IP interfaces defined usingData Link Connection Identifier (DLCI).Figure 2: E1/T1 Port Channel GroupFigure 3: USP Port - PPP Protocol on page 84 illustrates a USP port. All data from the USPport is encapsulated using the PPP protocol, and is sent via a serial interface over the multipleIP interfaces defined for the Serial interface.Issue 3 January 2005 83