Cisco SPA2102-AN - Single Port Router Administration Manual page 137

ATA Voice Field Reference
SIP page
Cisco Small Business ATA Administration Guide
EXT RTP Port Min
NAT Keep Alive
Intvl
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.
Interval between NAT-mapping keep alive messages.
The default is 15.
B
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