NEC Univerge SV8100 Features And Specifications Manual page 1580

Issue 13.0
With Version 4000 software, the failover process in a Netlink environment is improved.
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When network communication is down, an alarm is sent to the Attendant terminal informing
of the communication error on the network. Improvements also allow for a defined number
of network outages per clock hour before failing over.
With Version 4000 or higher software, DT700 series IP terminals and wireless IP
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terminals can be registered to secondary systems in a NetLink environment, Softphones
must still register to the primary only.
When the Attendant telephone exists on a secondary system, alarm information is not
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displayed on the Attendant telephone.
When Fail Over occurs between the Primary System and two or more Secondary Systems,
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the Attendant telephone displays the System ID of the system that went into Fail-Over last.
When using InMail in a CCIS or Netlink network, 8-digit extensions and mailboxes are not
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supported.
With Version 7000 or higher software, the SV8100 can recognize each system where the
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DT700 extension(s) are connected and provide an Automatic Route Selection COS based
on the System (System ID) when using NetLink.
When NetLink is enabled, synchronous ringing (Program 14-02-17) is automatically
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disabled. Synchronous ringing is not supported in a NetLink environment.
All nodes in a NetLink network should have the same setting in Program 51-01-04.
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Restrictions
All IP Trunks must be connected to the Primary System, Version 4000 (V4.01 or lower).
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The number of total ports depends on the Primary System.
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System ID (Program 51-01-02) must be unique for each system in a NetLink network.
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ACD/MIS can connect to the Primary (Main) site only.
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Only one Voice Mail can be installed in a NetLink network.
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In-Mail and VRS use the VMDB of the Primary (Main) site.
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APSU can be installed in the Secondary (Remote) System, however the NetLink time zone
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follows the Primary (Main) System.
Secondary systems must follow the primary CPU software settings for Mu-law/A-law within
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the country where the primary system is located. SV8100 NetLink connections are only
supported within the same countries/areas. For example, the SV8100 can be connected via
NetLink between the US and Canada, however the SV8100 can not be connected via
NetLink with systems in other countries (e.g., Mexico or the U.K.).
Synchronous Ringing via NetLink is not supported.
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UNIVERGE SV8100
SV8100 NetLink