System information

Configuring Voice
Configuring Voice Settings
Cisco SPA100 Series Phone Adapters Administration Guide 71
4
NAT Support Parameters
G729b Codec Name G.729b codec name used in SDP. Default setting:
G729ab.
EncapRTP Codec
Name
EncapRTP codec name used in SDP. Default setting:
EncapRTP.
Field Description
Handle VIA received If you select yes, the ATA processes the received
parameter in the VIA header (this value is inserted by
the server in a response to anyone of its requests) If
you select no, the parameter is ignored. Select yes or
no from the drop-down menu. Default setting: no.
Handle VIA rport If you select yes, the ATA processes the rport
parameter in the VIA header (this value is inserted by
the server in a response to anyone of its requests) If
you select no, the parameter is ignored. Select yes or
no from the drop-down menu. Default setting: no.
Insert VIA received Inserts the received parameter into the VIA header of
SIP responses if the received-from IP and VIA sent-by
IP values differ. Select yes or no from the drop-down
menu. Default setting: no.
Insert VIA rport Inserts the parameter into the VIA header of SIP
responses if the received-from IP and VIA sent-by IP
values differ. Select yes or no from the drop-down
menu. Default setting: no.
Substitute VIA Addr Lets you use NAT-mapped IP:port values in the VIA
header. Select yes or no from the drop-down menu.
Default setting:
no.
Send Resp To Src Port Sends responses to the request source port instead of
the VIA sent-by port. Select yes or no from the drop-
down menu. Default setting: no.
STUN Enable Enables the use of STUN to discover NAT mapping.
Select yes or no from the drop-down menu. Default
setting: no.
Field Description