CLEER24 – Port Managed Switch


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The award winning CLEER (Coax Leveraged Ethernet Extended Reach) switch is the world’s first 24 port Ethernet over Coax managed switch. This powerful enterprise grade switch delivers fast ethernet and PoE+ over coax cable with 2,000 ft (610 m) reach.

CLEER was designed to make the modernization to IP quick, easy and cost effective by leveraging an existing coax 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 Ethernet over Coax technologies, the CLEER switch offers:

Speed, Reach and Power

CLEER delivers 100 Mbps (symmetrical, full duplex) and PoE+ over coax cable with 2,000 ft (610 m) reach. It is designed to support the most demanding IP Cameras with plenty of bandwidth to spare. No speed degradation with longer distance.

Industry Leading PowerWISE® Technology

Power sharing for redundancy, load balancing, AC/DC options, hot swappable power supply and auto-sensing 100-240 VAC delivering 500 to 1,000 watts of power. CLEER is one of the most energy efficient switches on the market, consuming less than 17 Watts of power to operate.

Managed Switch with Plug-and-Play Option

CLEER can either operate in a transparent mode functioning as a bridge, allowing for plug-and-play deployment, or as a fully managed switch with high value features specifically designed for the security industry, 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 (48.26cm) x 1U without rack ears:

• 1.75” x 17.13” x 9.92” (HxWxD)

• 4.45cm x 43.5cm x 25.2cm (HxWxD)

Weight7.94 lbs (3.6 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/6 copper cable

Interface: Downlink (PoE and IP to Adapter)24 x BNC Jacks

Speed: 100Mbps (full duplex)

PoE Power: 30 Watts Maximum

Maximum Distance:

• 1500ft (457m) over RG59 COAX Cable

• 2000ft (609m) over RG6 COAX Cable

24 x Status LEDs:

• Configuration Options: Link Activity / Link / Off

Management1 LAN port (MGMT): RJ45, 10/100 Base-T

auto-sensing, IEEE 802.3

1 UART console port: RJ45 (RJ45 to DB9 cable


Power SupplyHot-Swappable Power Supply Unit Auto-sensing 100-240VAC, 50/60 Hz Power Output: 500W max at 100VAC, 1000W max at 240VAC
Power Consumption16.5W
Power Injection (PoE)DC voltage: 48VDC to 56VDC Endpoint devices must be compliant with IEEE 802.3af/at
PowerWISE® Power Sharing2 male connectors (rear) DC IN and DC OUT: 48VDC to 56VDC
Operating Temperature14°F to 122°F (-10°C to 50°C)
Humidity10% to 95% (non-condensing) at 95°F (35°C)

CLEER 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-LNK-02The EC-Link adapters are sold in packages of 2 and are media converters that convert the coax to Ethernet cable connections. They can be used with the CLEER and EC10 switch to support the end point device or can be used as Ethernet Extenders. The EC-Link can be locally powered
NV-EC-4The EC4 adapter converts one single coax cable into 4 PoE Ethernet ports. The EC4 can be connected to the CLEER or EC switch or to an EC Link. The EC4 can be locally powered.
NV-PS55-60WThe 55VDC 60W optional power supply to locally power the EC4 adapter.
NV-PS55-110WThe 55VDC 110W optional power supply to locally power the EC4 adapter.
NV-EC-48-PWRThe 48VDC 48 watt optional power supply to locally power the EC-Link adapter.
NV-PL-DCCBLPack of 4 DC cables to connect 4 CLEER switches together to enable power sharing for redundancy.

Firmware Upgrade

Software Version

The current version of the switch software is 5.3.0

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 with supported hardware.


  • Bridged Mode bugs.
  • Bridged Mode now defaults to off after factory reset.
  • Removed web based firmware update.


  • 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

Introducing the CHARIoT Series

Introducing: NVT CLEER Simple IP modernization

The award winning CLEER switch is the worlds first 24 port managed switch that delivers 100 Mbps Ethernet (full duplex) and PoE+ over Coax with 2,000 ft (609 m) reach.

No need for a costly and disruptive rip-and-replace of your infrastructure when you can transform your existing coax into a robust IP platform with the CLEER 24 switch or the EC 10 switch.


IP Modernization Made Simple

Learn how NMSU saved over $1 million and fast tracked their modernization by 3 years.


Register Your Opportunity

Secure product availability by registering your opportunity!

Transform your Coax

Eliminate barriers to IP camera modernization! Learn how.




General FAQ

What are these solutions?

The NVT Phybridge CLEER is a Layer 2+ Ethernet data switch that provides a complete IP network over existing coaxial cabling. The solution allows for a non-disruptive, quick and straightforward way to deploy IP devices. The NVT Phybridge CLEER comes in a 24-port model. It is required to have one EClink Adapter or EC4 for every active port on the NVT Phybridge CLEER.

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 CLEER, 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 CLEER?

Multiple manufacturers, VARs and vendors have tested the NVT Phybridge CLEER. 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 CLEER is configured as a layer 2+ switch.

Does the NVT Phybridge CLEER support fiber interfaces?

The CLEER 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 CLEER work with VLANs?

VLANs are not required when deploying the CLEER. The CLEER and EClink Adapters act essentially like a “physical” VLAN, this is done by isolating the IP voice traffic to the parallel voice network provided by the CLEER system. The CLEER 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 CLEER and EClink Adapter. 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 CLEER to handle this VLAN traffic.

How is QoS handled?

Because of the point to point topology of the EClink Adapter to the NVT Phybridge CLEER, 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.

Why am I not able to log into my CLEER through the GbE ports?

The CLEER is shipped in bridged mode and will only allow out of band management. To disable this, you will need to log in and issue the following command: pal-set-bridged disable. You will need to reboot your switch before you can gain access through the GbE ports.

I want to use the CLEER with PTZ cameras, and those cameras are going to have their own power supply. What needs to be done so the ports on the CLEER do not get damaged?

You may need to remove pairs 4, 5, 7, and 8 from the cable that is going between the EC-LNK and PoE injector. These pairs are used to send power to and from the end device.

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 CLEER?

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

Will the CLEER or IP devices work without power?

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

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

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

What are the specifications of the EClink 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.

Can I attach any Ethernet device?

Yes. The NVT Phybridge EClink 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 the EClink?

The EClink consumes a maximum of 1 W.

What is the operating temperature of the EClink?

The EClink can operate in areas with ambient temperature from -50 to 70 degrees C. The EClink does not operate above ambient temperature and should be in an area that gets air circulation.

What is the minimum connection rate?

The CLEER supports 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 EClink?

Yes. Each EClink 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 EClink connection. (Note: For the daisy chaining configuration you may require additional Earth ground on the CLEER; please consult the CLEER Hardware Installation Manual.)

What are the data security implications of these devices?

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

Does the NVT Phybridge CLEER support Auto MDIX?

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

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

Yes, traffic between the CLEER and EClink and network ports support full duplex.

Is the CLEER SNMP compliant?

The NVT Phybridge CLEER supports SNMP messaging.

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

The NVT Phybridge CLEER provides power over the EClink RJ45 port, the voltage provided is IEEE 802.3af compliant. We would be considered a mid-span POE device.

What speeds are provided/supported?

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

Installation FAQ

How do I install the NVT Phybridge CLEER?

Mount the CLEER in desired location. Unplug your legacy system from the infrastructure that will be connected to the CLEER. Warning: the CLEER can damage legacy equipment if it is left connected. Connect AC cable and optional ground connection, turn on the CLEER. NOTE: Before you connect the existing cabling to the CLEER, 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 EClink. Connect CLEER Line Interfaces to the prepared BNC Connectors from the two infrastructures. Connect the NVT Phybridge CLEER GBE1 port directly to an Ethernet device. Connect the EClink to the coax connection at desired wall locations. Connect the chosen IP device to the RJ45 port on the EClink. The default CLEER 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 CLEER, please refer to the NVT Phybridge CLEER manuals or for configuration information.

How do I configure the NVT Phybridge CLEER?

The CLEER comes from the factory with a default configuration that provides basic functionality without any additional programming. The NVT Phybridge CLEER may be configured to customize operation for your unique deployment (IP address, bridging configuration). Please read the CLEER WEB GUI and Hardware Installation manuals before attempting to change any configuration. If problems occur, reset the NVT Phybridge CLEER 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 – Please note: unit comes with out of band mode enabled; this IP is disabled by default. 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 CLEER if I have forgotten it?

Factory default the unit by holding the reset button for 10 seconds.

What do the LEDs on the EClink represent?

The green (left) LED indicates the link status. If there is a link to the switch, then the light will be solid. The amber (right) LED indicates network activity. If it is flashing, then there is network activity.

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

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 determine the following:

How much power the CLEER and EClink consumes?

The CLEER24 will draw 22W and the EClink will consume 1 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 CLEER and EClink are designed to work with coaxial cabling. We recommend use of RG59 or better cabling for installation of the CLEER. However, this does not mean the CLEER will not work on cabling that does not meet RG59 specifications.

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

Yes. The CLEER provides up to 56V DC on a single pair. 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 CLEER.

Where is the best location to put the EClink?

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

How do I prepare to install the NVT Phybridge CLEER?

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


What coaxial connection do I need to connect to the NVT Phybridge CLEER?

A BNC male connector on your RG59 cable is required to connect the BNC cable to the NVT Phybridge CLEER Line Interface.

Does the NVT Phybridge CLEER 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 CLEER and/or the EClink?

The NVT Phybridge CLEER can be seen on the network. The NVT Phybridge CLEER can be configured with an IP address for in-band management (on GBE ports). The NVT Phybridge CLEER can be configured with an IP address on the MGMT port for out-of-band management. The EClink 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 EClink it will be fully manageable as it is now on the network.

How do I find out the connection rates of the EClink to the NVT Phybridge CLEER?

The rate will be 100BASET regardless of distance. If the EC-Link is within 2000 feet and the cabling allows a connection the rate be 100BASET.

How do I configure the EClink?

The EClink requires no configuration.


Why does my EClink not power up?

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

My EClink will not connect to the CLEER, what is wrong?

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

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

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

Does the EClink support Auto MDIX?

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