Serial Interface Overview; Layer 1 T1 Port With Two Channel Groups - Avaya G450 Manual

Configuring WAN interfaces
Access control lists define which packets should be forwarded or denied access to the
network. QoS lists change the DSCP and 802.1p priority of routed packets according to
the packet characteristics. For more information, see
Each interface on the G450 can also have an active policy-based routing list. For more
information, see
Header Compression. Use of header compression reduces the size of packet headers,
●
thus reducing the amount of bandwidth needed for data. RTP header compression
enhances the efficiency of voice transmission over the network by compressing the
headers of Real Time Protocol (RTP) packets, thereby minimizing the overhead and
delays involved in RTP implementation. TCP header compression reduces the amount of
bandwidth needed for non-voice traffic. For more information, see
compression

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 G450 supports multiple channel groups on the same E1/T1 interface.

Layer 1 T1 port with two channel groups

Figure 19 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 19: Layer 1 T1 Port
246 Administration for the Avaya G450 Media Gateway
Configuring policy-based routing
on page 225.
Configuring policy
on page 619.
Configuring header
on page 591.