Avaya Communication Manager Administrator's Manual page 1150

Screen Reference
Intra-region IP-IP Direct Audio
Allows direct audio connections between IP endpoints within a network region.
Valid entries
y/n
native(NAT)
translated(NAT)
Inter-region IP-IP Direct Audio
Allows direct audio connections between IP endpoints in different regions
.
Valid entries
y/n
translated(NAT)
native(NAT)
1150 Administrator Guide for Avaya Communication Manager
Usage
Enter y to save on bandwidth resources and improve sound quality of
voice over IP transmissions. An n entry might be used if, for example, the
IP telephones within the region are behind two or more firewalls.
Enter native(NAT) if the IP address from which audio is to be received for
direct IP-to-IP connections within the region is that of the telephone/
softphone itself (without being translated by NAT). IP telephones must be
configured behind a NAT device before this entry is enabled.
Enter translated(NAT) if the IP address from which audio is to be
received for direct IP-to-IP connections within the region is to be the one
with which a NAT device replaces the native address. IP telephones must
be configured behind a NAT device before this entry is enabled.
Usage
Enter y to save on bandwidth resources and improve sound quality of
voice over IP transmissions. An n entry might be used if, for example, the
IP telephones within the region are behind two or more firewalls.
Enter translated(NAT) if the IP address from which audio is to be
received for direct IP-to-IP connections between regions is to be the one
with which a NAT device replaces the native address. IP telephones must
be configured behind a NAT device before this entry is enabled.
Enter native(NAT) if the IP address from which audio is to be received for
direct IP-to-IP connections between regions is that of the telephone itself
(without being translated by NAT). IP telephones must be configured
behind a NAT device before this entry is enabled.