FLEX24-Port Managed Switch


Kansai Leverages Modern LAN Principles to successfully modernize to IP, saving over $75,000 and accelerating the deployment of Xovis Person Tracking Sensors.


The FLEX managed switch delivers fast Ethernet and PoE++ (50 watts per port) over multiple pairs of UTP cable with six times the reach of traditional switches.

FLEX was designed to make the modernization to IP quick, easy and cost effective by leveraging an existing 2 or 4 pair UTP infrastructure. Benefits include:

  • Accelerating your return on investment by reducing infrastructure costs.
  • Collapsing planning and deployment time.
  • Eliminating infrastructure barriers, risks, disruption and costs.
  • Creating a robust IP platform that is easy to configure, deploy and manage.

Unlike other Network Switches, FLEX Delivers:

Speed, Reach and Power

The Flex switch can operate in standard mode (without an adapter) and long reach PoE mode for extended reach. One switch, many options.

Cable TypeData RateReach
4 pair CAT5e100 Mbps2000ft / 610m
2 pair CAT5e100 Mbps1000ft/ 300m
1 pair CAT5e100 Mbps950ft / 290m (adapter must be locally powered)

Industry Leading PowerWISE® Technology

Power sharing for redundancy, load balancing, AC/DC options, hot swappable power supply and auto sensing 100-240VAC delivering 500 to 1,000 watts of power.

FLEX is one of the most energy efficient switches on the market consuming less than 20 watts of power to operate.

Managed Switch with Plug-and-Play Option

FLEX can operate in transparent mode functioning as a bridge allowing for plug-and-play deployment or as a fully managed switch with high value features including:

  • Power management by port for easy reset of ports.
  • Port MAC locking for higher security and peace of mind.
  • Simple Network Manager, an intuitive web GUI that makes managing the switch a breeze.

Tech Specs
Dimensions19 inches x 1U without rack ears:

• 1.75” x 17.13” x 9.92” (HxWxD)

•4.45cm x 43.5cm x 25.2cm (HxWxD)

Weight7.36 lb. (3.34 kg)
MountingStandalone, rack or shelf-mountable; 2 brackets included for installation
Interface: Ethernet Uplink (Trunk IP)Maximum 2 uplinks, each 1Gb/s (full duplex), either:

•2 mini-GBIC ports: 1000 Base-TX/SX/LX/EX/ZX/ LHX (determined by SFP, transceiver module installed), Ethernet IEEE 802.3z, fiber optic cable; or

• 2 RJ45 ports: 10/100/1000 Base-T auto-sensing, independent speed selection, Ethernet IEEE

802.3, CAT5e copper cable

Management1 LAN port (MGMT): RJ45, 10/100 Base-T auto-sensing, IEEE 802.3

1 UART console port: RJ45 (RJ45 to DB9 cable included)

Power SupplyHot-Swappable Power Supply Unit

Auto-sensing 100-240VAC, 50/60 Hz

Power Output: 500W max at 100VAC, 1000W max at 240VAC

*Optional 1000W and 1600W power supplies available at additional cost.

Power Consumption20W
Power Injection (PoE)DC voltage: 48VDC to 56VDC

IEEE 802.3af/at

PoE++ (50 Watts) compatible

PowerWISE® Power Sharing2 male connectors (rear)

DC IN and DC OUT: 48VDC to 56VDC

FLEX Layer 2 Capabilities

Layer 2 Features·  High performance Store and Forward architecture, runt/CRC filtering that eliminates erroneous packets to optimize the network bandwidth

·         Supports VLAN

–          IEEE 802.1Q tagged VLAN

·         Supports Spanning Tree Protocol

–          STP (Spanning Tree Protocol)

–          RSTP (Rapid Spanning Tree Protocol)

·         Supports Link Aggregation

–          Ether-channel (static trunk)

·         Jumbo Frame

– Max 5k size

MulticastSupports IGMP snooping v2 and v3
Security·         Authentication

–          Built-in RADIUS client to co-operate with the RADIUS servers, when installed.

–          RADIUS / TACACS+ login user access authentication, when installed.

·         Access Control List

·         MAC Security

–          Static MAC

·         SSH / SSL, when installed


·         IPv4 stack management

·         Switch management interface

–          Web switch management

–          Telnet command line interface

–          SNMP v1, v2c

–          SSH / SSL secure access, when installed.

·         User privilege levels control, with TACACS only.

·         Built-in Trivial File Transfer Protocol (TFTP) client

·         System maintenance

–          Firmware upload/download via HTTP / TFTP

–          Configuration upload/download through Web interface

–          Hardware reset button for system reboot or reset to factory default

·         SNTP Network Time Protocol

·         Link Layer Discovery Protocol (LLDP)

·         SNMP trap for interface linkup and linkdown notification

·         Event message logging to remote Syslog server


View Datasheet
Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). They simultaneously comply with 1.25Gb/s 1000Base-SX Ethernet and1.063Gb/s Fiber Channel. They are RoHS compliant and lead-free.
NV-PL-1110-PWRIncrease the power budget of the CLEER switch to 1,000 watts if 110 power source is available.
NV-PL-1000-PWRExtra power supply that comes standard with the CLEER switch delivering 500 watts of power if 110v power source or 1,000 watts of power if 220v power source.
NV-FLXLKThe FLEX Link adapter is an Ethernet extender that extends Ethernet and power over 2 or 4 pair UTP. It is used with the FLEX 24 Port switch and FLEX 8 Port switch to support long reach requirements. The FLEX Link can be locally powered to provide higher power to the end point.
NV-PL-DCCBLPack of 4 DC cables to connect 4 CLEER switches together to enable power sharing for redundancy.

• Adapter for FLEX24, FLEX8 and FLEX-Base to extend PoE up to 2,000ft (610m)
• Supports IEEE-compliant devices
• Enables 4 IP devices from a single 2- or 4-pair UTP cable run
• Delivers 50W of power from the FLEX24 or FLEX-Base to the Adapter
• Can be locally powered for more power


• Adapter for FLEX24, FLEX8 and FLEX-Base to extend PoE up to 2,000ft (610m)
• Supports IEEE-compliant devices
• Delivers up to 30W of power

Firmware Upgrade

Software Version

The current version of the switch software is 7.1.0

Release Notes


  • IGMP multicast streaming support.
  • HTTPS support.
  • SNMP V3 support.
  • TACACS is now included by default.
  • TACACS configuration stays intact during firmware upgrade.
  • SSH is now included by default.
  • RADIUS support available by request.
  • Downlink speed port selection now available.
  • STP now on all ports and BPDU Guard available on downlinks.
  • Port PoE Pal command now displays power usage.


  • Bridged Mode bugs.
  • Bridged Mode now defaults to off after factory reset.
  • Removed web based firmware update.
  • Fixed PoE wattage displayed on webpages.
  • Factory defaulting the unit will now reset Management port IP.


  • Changing the hostname does not update in the command line prompt until the next session.
  • When a timezone is set, some syslog message timestamps are the set timezone, while others are in UTC.
Firmware Upgrade Request

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General FAQ

What are these solutions?

The NVT Phybridge FLEX is a Layer 2+ Ethernet data switch that provides a complete parallel IP network over existing UTP cabling. The solution allows for a non-disruptive, quick and straightforward way to deploy IP devices. The NVT Phybridge FLEX comes in a 24-port model. You may use one FLEX Link Adapter, FLEX-C Adapter or FLEX-4 to end Ethernet beyond the 328 foot reach. Within 328 feet an adapter is not required.

Where can I buy the NVT Phybridge CLEER solution?

NVT Phybridge solutions are available through our Distribution Partners. Our list of distributors is constantly growing, please contact us directly for a list of distributors.

What is the competition?

NVT Phybridge is the only company to competitively offer robust solutions that leverage existing infrastructure to provide POE and Ethernet to an endpoint at distance of 2000 feet or greater.

What is the service and support?

4 hours response time, plus hardware and software assurance is included with the warranty. If an RMA needs to take place, an advance replacement is done. If you require an RMA, you can get in contact with Support here.

What is the warranty?

There is a 1-year manufacturer’s warranty on the FLEX, based on the date of purchase. There is a 5-year warranty on the adapters. The end-user needs to register their product(s) online. The end-user is also able to purchase additional warranty, but they need to get in contact with their distributor. The warranty does not cover any environmental damage that may be caused by acts of god or negligence, such as: water, lightning strikes, fire, civil unrest, etc.

Who has tested the NVT Phybridge FLEX?

Multiple manufacturers, VARs and vendors have tested the NVT Phybridge FLEX. Please contact us directly for a list of partners.

Do these products support all major IP Camera manufacturers?

Yes. Any IP camera device is supported as the NVT Phybridge FLEX is configured as a layer 2+ switch.

Does the NVT Phybridge FLEX support fiber interfaces?

The FLEX will work with both Multi Mode Fiber (MMF) and Single Mode Fiber (SMF), the limitation is in the GBIC module (rate). The GBIC interfaces supports 1000BASE-TX/SX/LX/EX/ZX/LHX.

What IP devices are supported?

All IEEE 802.3af/at compliant IP devices are supported.

Technical FAQ

How does the NVT Phybridge FLEX work with VLANs?

VLANs are not required when deploying the FLEX. The FLEX and FLEX Link Adapters act essentially like a “physical” VLAN, this is done by isolating the IP traffic to the parallel network provided by the FLEX system. The FLEX has a default configuration of VLAN 1 with all untagged configuration. This will pass all untagged VLAN traffic or remove the tag from VLAN 1 for data to and from the FLEX.. If you need to configure your IP phones to work with any fixed VLANs (because you may already be using VLANs on your corporate data network), then you will need to configure the FLEX to handle this VLAN traffic.

How is QoS handled?

Because of the point to point topology of the FLEX Link Adapter to the NVT Phybridge FLEX, customized QoS configuration is not normally required. In most instances network configuration is not required but if required QOS can be setup on the switch, please see technical training and manuals for information.

I am using 1 pair or 2 pair Cat5 with my FLEX Link. What is the pinout configuration?

For 1 pair, you will be using pairs 1 and 2.
For 2 pairs, you will be using pairs 1 and 2, and pairs 3 and 6.

How do I set the PoE to manual on a port?

When you are logged into the switch, issue the following command: pal-set-port-poe <1-24|all> manual.
This will allow the full 50 watts to be outputted by the FLEX switch.

How do I enable fibre on my switch?

Once logged into your switch, enter this command: pal-set-gigaport {GbE1|GbE2|GbE} fiber. Make sure to save configuration with pal-conf-save and then reboot the switch.

Features FAQ

What is the operating temperature of the FLEX?

The FLEX can operate in areas with ambient temperature from 0 to 50 degrees C.

Will the FLEX or IP devices work without power?

The FLEX is the only component that requires connection to a power source. The FLEX Link and IP devices plugged into the FLEX Link receive their power from the NVT Phybridge FLEX. The NVT Phybridge FLEX is a complete PoE solution; no local power pucks or adapters are required for the FLEX Link or for the IP device plugged into the FLEX Link.

Does the NVT Phybridge FLEX support CDP and/or LLDP?

The CLEER switch allows for CDP Pass-through communication. LLDP is supported on the FLEX switch.

What are the specifications of the FLEX Link RJ45 port?

The RJ45 port is a 100 Mbps Full Duplex Ethernet port that provides IEEE 802.3af/at compliant voltage to an IP device connected to the RJ45 port. It can output 50 Watts of power based on power source.

Can I attach any Ethernet device?

Yes. The NVT Phybridge FLEX Link supports Ethernet devices that are IEEE 802.3af/at compliant. The connection rate is 100BASE-T. The NVT Phybridge CLEER supports 10/100/1000BASE-T connections on GBE copper and fiber ports.

What is the power consumption of FLEX Link?

The FLEX Link consumes a maximum of 1.5 W.

What is the operating temperature of the FLEX Link?

The FLEX Link can operate in areas with ambient temperature from -40 to 70 degrees C. The FLEX Link does not operate above ambient temperature and should be in an area that gets air circulation.

What is the minimum connection rate?

The FLEX supports 10/100 Mbit full duplex at up to 2000 feet on all downlink ports.

Is there a limit to the number of supported devices off one FLEX Link?

Yes. Each FLEX Link can power one IP device. Some IP phones do allow additional IP devices plugged into them, like a laptop computer, allowing multiple network devices to function off the single FLEX Link connection. (Note: For the daisy chaining configuration you may require additional Earth ground on the FLEX. Please consult the Hardware Installation Manual.)

I have four endpoints in one location that need to be powered up through PoE. What adapter would be needed?

The FLEX-4 can be installed to provide up to 30w per port. This adapter takes one Cat5/6 cable and splits it into four 10/100 RJ45 interfaces. The end devices need to be 802.3af/at compliant.

What is the difference between FLEX Link, FLEX-4, and FLEX-C adaptors?

All these adapters have 10/100 RJ45s and the end-points must be 802.3af/at. The FLEX-C needs to have PoE turned on to manual on the switch, and the FLEX-C is in plastic case. The FLEX-Link and FLEX-4 do not need to have PoE turned on manually at the switch and they are in metal case. Both FLEX Link and FLEX-4 do have the option for an external power supply. Only the FLEX Link can provide up to 50w, meanwhile the FLEX-4 and FLEX-C are able to provide up to 30w per port. The FLEX-C provides PoE and does not negotiate to determine if the end device needs power, meanwhile the FLEX Link and FLEX-4 will negotiate.

What are the data security implications of these devices?

The NVT Phybridge FLEX has two types of network connections, one for Management and one for the Uplink traffic, each configurable to a separate subnet. The traffic is isolated to the GBE Uplink Network ports; in-band management of the FLEX is available through this port, or it may be kept isolated. The MGMT port may also be used for monitoring the FLEX; this port operates independently of the Uplink ports.

Does the NVT Phybridge FLEX support Auto MDIX?

Yes. Both GBE ports support straight through or cross over cables. The straight through cable is recommended.



Are the NVT Phybridge FLEX and FLEX Link full duplex (sending and receiving data at the same time)?

Yes, traffic between the FLEX and FLEX Link and network ports support full duplex. Supports 200 Mbit/s, 100 Mbit up and 100 Mbit down simultaneously.

Is the FLEX SNMP compliant?

The NVT Phybridge FLEX supports SNMP messaging.

How is the Power over Ethernet provided to the IP device?

The NVT Phybridge FLEX provides power over the FLEX Link RJ45 port, the voltage provided is IEEE 802.3af/at compliant.

What speeds are provided/supported?

The per port signalling rate is 10/100BASE-T on each port. This speed is not affected by distance or cable quality.

4 Pairs – 100Mbps full duplex to 2,000ft (610m)
2 Pairs – 100Mbps full duplex to 1,000ft (305m); 10Mbps full duplex from 1,000ft (305m) to 2,000ft (610m)
1 Pair – 10Mbps full duplex to 2,000ft; FLEX Link will need to be powered locally

Do I need a FLEX Link if the IP device is less than 328ft (100m) away from the switch?

No, you do not need a FLEX Link if the IP device is with the 328ft (100m) Ethernet standard.

Installation FAQ

How do I install the NVT Phybridge FLEX?

Mount the FLEX in desired location. Unplug your legacy system from the infrastructure that will be connected to the FLEX. Warning: the FLEX can damage legacy equipment if it is left connected. Connect AC cable and optional ground connection, turn on the FLEX. NOTE: Before you connect the existing cabling to the FLEX, you will want to make sure the ends are terminated, and you are not terminating the cabling while the switch is running. You may damage the ports on the switch or may damage the FLEX Link. Connect FLEX downlink Interfaces to the prepared RJ45 Connectors from the infrastructure. Connect the NVT Phybridge FLEX GBE1 port directly to an Ethernet device. Connect the FLEX Link to the UTP connection at desired wall locations. Connect the chosen IP device to the RJ45 port on the FLEX Link. NOTE: You will want to make sure that the IP device is plugged into the RJ45 labeled “To endpoint”. The default FLEX configuration is set up for the daisy chaining of the GBE ports. If you want to set up a redundant network topology for the NVT Phybridge FLEX, please refer to the NVT Phybridge FLEX manuals or www.nvtphybridge.com for configuration information.

How do I configure the NVT Phybridge FLEX?

The FLEX comes from the factory with a default configuration that provides basic functionality without any additional programming. The NVT Phybridge FLEX may be configured to customize operation for your unique deployment (IP address, bridging configuration). Please read the FLEX WEB GUI and Hardware Installation manuals before attempting to change any configuration. If problems occur, reset the NVT Phybridge FLEX to its factory default.

What is the default user name and password?

Default user name: admin

Default password: admin

What is the default IP address?

Default IP addresses: GBE IP Address MGMT IP Address

What if I have forgotten the admin user password?

Please try the default user name and password (admin/admin). If this does not work factory default the unit by holding the reset button for 10 seconds.

How do I retrieve the IP address of the NVT Phybridge FLEX if I have forgotten it?

Factory default the unit by holding the reset button for 10 seconds will reset the GBE IP, the management IP will not be reset on factory default.

What do the LEDs on the FLEX Link represent?

The two LEDs are labeled on the adapter. Link, which shows whether there is a link between the switch and the adapter. It also shows which speed the data is being transmitted on; green for 100Mbps or orange for 10Mbps. The other light is the activity light, which shows whether any data is being sent through the FLEX adapter.


How do I calculate the UPS (Uninterruptable Power Supply) requirements for the NVT Phybridge FLEX?

The UPS allows the materials to be switched to emergency battery power for up to several minutes or longer in case of electrical problems, including; power line disturbances, outages, overvoltage, under-voltage, voltage spikes and lightening. To determine more accurate UPS power requirements, you should consider the following:

How much power the FLEX and FLEX Link consumes?

The FLEX24 will draw 20W and the FLEX Link will consume up to 1.5 W of power. Use these values to help calculate your UPS usage.

Please see our power calculators in the partner portal for more detailed explanation on this.

How do I know if my cabling will support these devices?

The NVT Phybridge FLEX and FLEX Link are designed to work with UTP cabling. We recommend use of Cat5 or better cabling for installation of the FLEX. However, this does not mean the FLEX will not work on cabling that does not meet Cat5 specifications.

Can the FLEX damage old legacy equipment if left plugged into wiring?

Yes. The FLEX provides up to 56V DC. This voltage can potentially damage some digital and legacy phone equipment. Please ensure all old legacy phones are disconnected from the wiring infrastructure before you power up the NVT Phybridge FLEX.

Where is the best location to put the FLEX Link?

The best location for the FLEX Link is as close to the UTP connection as possible; on the wall next to the coaxial wall plate or near the RJ45 jack in a cubicle. It is recommended to have the FLEX Link in a place where there is reasonable airflow.

How do I prepare to install the NVT Phybridge FLEX?

The NVT Phybridge FLEX may be physically installed in the server room or telephone closet prior to use. Ensure the FLEX will have adequate air flow. Connect Earth ground connection if required. An Earth ground connection is not normally required with the FLEX Link, however when more than six FLEX Link’s that have multiple IP devices are connected (in daisy chained mode) to any single FLEX, then that FLEX requires an Earth ground connection. Before powering the FLEX, ensure all legacy digital sets and legacy equipment is disconnected from the infrastructure to be used. Prepare RJ45 connections to the Line interfaces.

What UTP connection do I need to connect to the NVT Phybridge FLEX?

A RJ45 male connector on your Cat5 cable is required to connect the UTP cable to the NVT Phybridge FLEX Line Interface.

Does the NVT Phybridge FLEX support Auto MDIX?

Yes. Both GBE ports support straight through or cross over cables. The straight through cable is recommended.

Do I need a special cable to connect to the MGMT port?

No – any standard CAT5 cable will work.

Will my network management software see the NVT Phybridge FLEX and/or the FLEX Link?

The NVT Phybridge FLEX can be seen on the network. The NVT Phybridge FLEX can be configured with an IP address for in-band management (on GBE ports). The NVT Phybridge FLEX can be configured with an IP address on the MGMT port for out-of-band management. The FLEX Link does not have a MAC address and acts as a bridge for the device plugged into the RJ45 port. It is not accessible from the network. Once an IP device is connected to the FLEX Link it will be fully manageable as it is now on the network.

How do I find out the connection rates of the FLEX Link to the NVT Phybridge FLEX?

The rate will be 100BASE-T regardless of distance. If the FLEX Link is within 2,000 feet and the cabling allows a connection the rate be 100BASE-T.

How do I configure the FLEX Link?

The FLEX Link requires no configuration.

Why does my FLEX Link not power up?

There could be multiple reasons, including wiring problems, short on wiring, distance, problem with the FLEX port, or a problem with the FLEX Link. Please see the Hardware Installation manual for details on how to troubleshoot this problem.

My FLEX Link will not connect to the FLEX, what is wrong?

There could be multiple reasons, wiring problems, distance from the FLEX, damaged FLEX Link, a damaged port on the FLEX. Please see the Hardware Installation manual for details on troubleshooting connection problems.

Can I plug in a non-POE device into the FLEX Link RJ45 connector?

Yes, you can connect non-PoE devices like a PC if the device is IEEE 802.3af/at compliant.

Does the FLEX Link support Auto MDIX?

No. The FLEX Link requires a straight through Ethernet cable for the IP device.