Serial Interface Overview - Avaya G250 Administration

Serial interface overview

Serial interface overview
A serial interface is a virtual interface that is created over a portion of an E1/T1 or USP port on a
WAN media module. Serial interfaces support PPP and frame relay encapsulation protocols.
The G350 supports multiple channel groups on the same E1/T1 interface. In contrast, the G250
only supports a single channel group. If a G250 user attempts to create more than one channel
group, an error message appears.
Figure 11: Layer 1 T1 Port on page 131 illustrates a Layer 1 T1 port with two channel groups
defined. All data from each channel group is encapsulated using PPP protocol, and is
distributed over the multiple IP interfaces defined for each channel group.
Figure 11: Layer 1 T1 Port
Figure 12: E1/T1 Port Channel Group on page 131 illustrates an E1/T1 port channel group. All
data from the channel group is encapsulated using frame relay protocol. The data is sent via a
frame relay serial interface and sub-interfaces over the multiple IP interfaces defined using Data
Link Connection Identifier (DLCI).
Figure 12: E1/T1 Port Channel Group
Figure 13: USP Port - PPP Protocol on page 132 illustrates a USP port. All data from the USP
port is encapsulated using the PPP protocol, and is sent via a serial interface over the multiple
IP interfaces defined for the Serial interface.
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