NEC Univerge SV9100 Manual page 513

10-26
Enter IP addresses for any communications server which is included in the
network (especially the Primary SV9100). Once the communications server
connects to the Primary SV9100, this setting is updated by the Primary SV9100
when Program 51-13-01 is enabled. This allows any new or changed SV9100s
to be added automatically.
An IP address cannot be defined more than once.
Required Programming for the Secondary System Setup
51-04-01 : IP Address for Top Priority Primary System – Internet Protocol

Address for Top Priority Primary System
Enter the IP address of the Primary SV9100. This setting is needed to use the
Primary SV9100 Automatic Integration Feature (Program 51-06-01). If the
secondary flag is set in Program 51-01-03 secondary SV9100s connect with
this IP address.
51-05-01 : Timer Settings for NetLink – Keep Alive Interval

Set the interval (1~3600) for the secondary SV9100 to send the Keep Alive
packet to the Primary SV9100 to confirm communication.
51-05-02 : Timer Settings for NetLink – Keep Alive Response Waiting Time

The secondary SV9100 waits this time (0, 5~10800) for response to the Keep
Alive packet to confirm communication with Primary SV9100. If no response is
received, Fail-Over occurs. A setting of 0 disables this and the SV9100 waits
indefinitely for a response from the Primary SV9100. For Fail-Over to occur, this
time must be set to an entry other than 0.
51-05-03 : Timer Settings for NetLink – Primary Search Packet Sending

Interval
This timer determines the time between packets the SV9100 waits when
searching for a new Primary SV9100 with the Fail-Over feature (1~3600).
51-05-04 : Timer Settings for NetLink – Top Primary Search Time

Set the time (5~10800) between packet sending when the SV9100 is reviewing
priority levels for a new higher-priority Primary SV9100.
51-05-05 : Timer Settings for NetLink – Top Priority Primary Detection

Packet Sending Interval
When the current Primary SV9100 is not the Top Priority Primary SV9100, the
SV9100 sends packets at this interval (1-3600) to check if a higher priority
SV9100 exists.
51-05-06 : Timer Settings for NetLink – Primary System Seeking Time with

Forced Change Primary
When the Forced Change Primary command is executed, the SV9100 searches
for the new Primary SV9100 for this time (1~10800).
51-05-07 : Timer Settings for NetLink – Communications Socket Refresh

Timer
If the IP connection becomes unstable and communication is lost (keep-alive
function does not work), the SV9100 retries the connection at this time
(20~3600).
51-06-01 : NetLink Primary System Automatic Integration Setting –

Primary Automatic Integration
When Fail-Over occurs, multiple Primary SV9100s may be established. When
the connection is recovered, with this option enabled (1), the NetLink feature is
automatically reestablished around the top priority Primary SV9100.
Issue 2.0
SV9100 NetLink