ATA Voice Field Reference
SIP page
ATA Administration Guide 143
B
EXT RTP Port Min External port mapping number of the RTP Port Min.
number. If this value is not zero, the RTP port number in all
outgoing SIP messages is substituted for the
corresponding port value in the external RTP port range.
The default is 0.
NAT Keep Alive
Intvl
Interval between NAT-mapping keep alive messages.
The default is 15.