Table 2-44 Napt Terminals - Minimum Timer Settings - NEC Univerge SV8100 Features And Specifications Manual

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The router the SV8100 resides behind requires Port Forwarding statements.

With Version 6000 or higher software, when Program 15-05-45 is set to "1" the manual

table setting for port forwarding may not be required on the remote side Router B, but the

router must support the NAT function setting itself. If Program 15-05-45 is set to "0" port

forwarding at the Remote side router is required. This feature requires installation of a

With Version 8000 or lower software, the router may close the port being used if packet

exchange is not performed during a certain time frame. In this occurs, change Program

84-23-01 and Program 84-23-02 to a shorter interval. With Version 9000 or higher

software, change Programs 15-05-47 and 15-05-48 to a shorter interval. These programs

are changed on a per station basis. Non NAPT phones will still use Programs 84-23-01 and

84-23-02 while only NAPT phones will use Programs 15-05-47 and 15-05-48.

The SIP-ALG or similar SIP application function of all routers in the network must be

The SV8100 Desktop Application does not support Network Address Translation (NAPT). If

a user would like to connect the Desktop Application through an Internet Connection the

use of a VPN is required.

If excessive packet loss occurs on the network, IP phones will play a warning tone during

conversations. To disable this tone set Program15-05-31 to "0".

Multicast RTP is not supported.

Peer to Peer is only possible on IP terminals within the same router.

NAPT is only supported for NEC DT700 IP terminals. All other third party SIP terminals are

not supported by this feature.

After starting SIP negotiation for the call, if any RTP packet can't be received from the

terminal within 10 seconds, the call is dropped and the IP Terminal displays the following:

With Version 9000 or higher software, 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. Refer to

using Programs 15-05-47 and 15-05-48.

Table 2-44 NAPT Terminals – Minimum Timer Settings on

to view the minimum timer settings based on the number of NAPT terminals

UNIVERGE SV8100

IP Multiline Station (SIP)