Toa VX-050DA - 8.8. VX-3000 Units LAN Link Connector Connection; 8.8.1. LAN Link Connector Connection

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Chapter 3 INSTALLATION AND SETTING PROCEDURES (HARDWARE)
8.8. VX-3000 Unit's LAN Link Connector Connection
8.8.1. LAN Link Connector Connection
Connect the LAN link connectors of all VX-3000 units within the system to each other via switching hubs.
Connect each of LAN link connectors A and B to the same switching hub or different switching hubs connected
in star conguration.
Also, since the VX-3000F has a HUB function compatible with RSTP (Rapid Spanning Tree Protocol), loop
connection is allowed between the VX-3000F units without the use of switching hubs.
Notes
• When non-RSTP-compliant switching hubs are used, increasing the number of the VX-3000 units causes
a packet loop to occur among the switching hubs until the VX-3000F begins to execute the loop detection,
possibly resulting in connection failure. The use of an RSTP-compliant switching hub is highly recommended.
• Connecting the VX-3000 units to an unstable network where a packet loss may occur possibly results in
unexpected system reboot, broadcast status discrepancy between action and consequence, or unstable
operation.
• Make the LAN link connectors completely independent from other LAN.
• Only the audio input to the VX-3000PM can be transmitted to other network areas via a router by unicast.
Establish a dedicated line using a VPN and the like.
• Be sure to use UTP or STP Category 5 straight cable (with R45 connectors) for connecting LAN link connectors.
However, it is recommended to use STP Category 5 straight cable if the cable connection distance is long.
• The distance between each of VX-3000 unit and a switching hub, and between switching hubs is less than 100
m.
• When making a redundant conguration, use both the terminals A and B for connections. If not required, use
only the terminal A.
• When making a redundant conguration in the systems that include the VX-3000CT or the VX-3000PM, use
the RSTP-compliant switching hubs.
• When connecting the VX-3000CT or the VX-3000PM without using the RSTP-compliant switching hubs,
connect only the LAN terminal A.
• When making the VX-3000F in a redundant conguration without using the RSTP-compliant switching hubs,
use the switching hub that can transparently transmit BPDU (Bridge Protocol Data Unit) packets.
• When using multiple switching hubs, make a star connection as shown in the connection examples 4.
[Connectionexample1:RedundantcongurationofRSTP-compliantswitchinghubs]
LAN link A
LAN link B
SW-HUB (RSTP) SW-HUB (RSTP) SW-HUB (RSTP) SW-HUB (RSTP)
LAN link A
LAN link B
VX-3000PM
VX-3000F
LAN link A
LAN link B
LAN link A
LAN link B
VX-3000CT
VX-3000F