NEC Univerge SV8100 Features And Specifications Manual page 1054

Issue 1.0
When fail-over occurs, the following features are disabled:
SMDR
ACD-MIS
IP K-CCIS
SIP MLT
The following Programs are not updated by the Primary System during fail-over :
Program 10-01, Program 10-02, Program 10-12, Program 10-13, Program 10-14, Program
10-15, Program 10-16, Program 10-45, Program 51-01, Program 90-01 or Program 90-09
Data in SRAM area is not transferred to the Secondary Systems during fail-over, therefore
when fail-over occurs DND and Caller ID History may be lost.
When Legacy Phone talks via Net-Link, a VoIP Resource in the system which the phone is
connecting is used.
When IP Phone talks to Legacy Phone via Net-Link: For the IP Phone, VoIP Resource is not
required. For the Legacy Phone, one VoIP Resource is required.
When IP Phone talks to IP Phone via Net-Link, each node will utilize two VoIP Resources.
When a Legacy Phone talks to CO Line via Net-Link: The SV8100 which has the Legacy
Phone needs one VoIP Resource, and the chassis which has the CO Line needs one VoIP
Resource.
When an IP Phone talks to CO Line via Net-Link: The SV8100 which has the CO Line needs
one VoIP Resource.
When an IP Phone talks to IP Trunk: The Primary System requires two VoIP Resources.
When a Legacy Phone talks to an IP Trunk via Net-Link: The SV8100 which has Legacy
Phone needs one VoIP Resource and the Primary System requires two VoIP Resources.
The number of conference blocks in a Net-Link network is the same as a stand-alone
system.
Invalid data will be displayed in the LCD of the terminal if Program 51-01 is enabled and
there is not a PZ-ME50-AU installed.
Restrictions:
All IP Trunks and IP Terminals must be connected to the Primary System.
The number of total ports is dependant upon the Primary System.
System ID (Program 51-01-02) must be unique for each system in a NetLink network.
ACD/MIS can connect to the Primary (Main) site only.
Only one Voice Mail can be installed in a Net-Link network.
In-Mail and VRS use the VMDB of the Primary (Main) site.
APSU can be installed in the Secondary (Remote) System, however the NetLink time
zone will follow the Primary (Main) System.
Synchronous Ringing via Net-Link does not work.
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UNIVERGE SV8100
SV8100 NetLink