NEC Univerge SV9100 Manual page 586

Issue 2.0
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S 3 R
ECTION ESTRICTIONS
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Dynamic NAT
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SV9100 Networking Manual
Each NAPT terminal can have a separate Register and Subscribe expire timer. The
load of the CPU will increase with each NAPT terminal using a short timer. The
following chart shows the minimum timer settings based on the number of NAPT
terminals using PRG 15-05-47 and 15-05-48.
– S
TATIC
With static NAT, the terminal needs a static IP Address assigned to it, or entries in
the DHCP must be made to provide the same IP Address to the terminal.
The NAT router on the terminal side must have the function for setting up static NAT.
A conversion table must be manually set up for the NAT router on the terminal side.
If installing multiple terminals in the domain of the NAT router on the terminal side,
the SIP port number and RTP/RTCP port number for each terminal must be
specified so as to avoid overlapping.
The SIP server cannot be switched. (Only one address can be registered as the SIP
server.)
Encryption with the SV9100 IPLE is not supported with IP terminals connected via
NAPT.
NetLink Failover is not supported.
The NAT router on the terminal side must have the function for setting up dynamic
NAT.
NAT
11-13