24+2+1 Port Gigabit Layer 2 Managed AI PoE Switch 7900

Product Code:    7900


Installation manual introduction

The Product installation manual mainly describes 7900AI PoE switch hardware features, installation methods, and precautions during the installation.

This manual includes the following chapters:

Chapter 1: Product Introduction. Briefly describes the basic features of the switch and the appearance details.

Chapter 2: Product Installation. Guide the switch hardware installation methods and precautions.

Chapter 3: Hardware Connections. Guide the connection between switches and other devices and precautions.

Chapter 4: Technical Specifications.

NOTE: To avoid potential device damage and personal injury, read the related information in this manual before installing the device.


The term “switch” mentioned in this manual, unless otherwise specified, refers to24-port full Gigabit Managed AIPoE switch, hereinafter referred to as 7900 Some pictures for the schematic, the product itself and pictures may be different.

The contents of this document may be updated from time to time due to product version upgrades or other reasons. Unless otherwise agreed, this document is provided as a guide only, and all statements, information, and recommendations in this document do not constitute any form of warranty.

This icon indicates the items to be cautioned in the operation. If the operation is wrong, the equipment may be damaged and other adverse consequences.

Chapter 1 Product Introduction

1.1Product Introduction

7900 is Layer 2 managed AI PoE switch designed for secure transmission and WIFIcoverage. It can satisfy the POE power supply requirements of WIFI AP, IP camera, WIFI bridge, IP phone and other types of equipment. The product adopts a new generation of high-performance hardware and software platform to provide flexible, cost-effective access and Gigabit uplink ports, complete security protection mechanism, complete ACL/QoS policy and rich VLAN functions, easy to manage and maintain, and satisfy users’ requirements for network equipment easy to manage, high security and low-cost, it is applicable for network access, aggregation, and core application scenarios of campus, hotel, and enterprise campus.

PoE (Power over Ethernet) refers to the power over Ethernet technology. It refers to the transmission of data signals to some IP-based terminals (such as IP phones, wireless access point APs, network cameras, etc.) and also provides DC power supply technology. These devices that accept DC power supply are called powered devices (PD, Powered Device)

1.2Packing List

Open the package and check the list below

Commodity Quantity Description
PoE switch 1pc No
Power cord 1pc Optional
Bracket 2pcs Fixed on rack mount
User Manual 1 pc Guide users to install switch


  • Front Panel

Indicators, RJ45 port, shortcut buttons, RST button, SFP port, CONSOLE

port, as shown in Figure as below:

  • Indicators

7900 The indicator working status is shown as following table:

Indicator Title color Work status Description
PWR Power indicator red Solid Power is normal
off No power, the power switch is notturned on, power supply is


POE POE power indicator yellow solid The corresponding RJ45 port is

connected to the powered device

and the power supply is normal

off The corresponding RJ45 port is

not connected to the powered

device or the power supply is


LINK/ACT Connection


green Blinking A valid link is established
off An invalid link is established
SYS System


green Blinking System is functioning properly
off System is functioning improperly

Software is damaged

 DIP switch function

AI QOS:Improve video data processing capabilities and improve the monitoring of Caton and Mosaic phenomena in the network.

EXTEND: 1-8 port rate down to 10Mbps, but the transmission distance up to 250 meters.

VLAN: Isolating ports 1-24 from each other, suppress network storms effectively and improve network performance.

AI Power Supply: Detect PD, power failure and restart dead equipment.

  • RJ45 Port

7900supports 24 10/100/1000 Mbps ports, all supporting IEEE802.3afandIEEE802.3atstandard POE power supply.

  • SFP Port

7900provides 2 Gigabit SFP optical module expansion slots (25, 26) for plugging Gigabit SFP modules

  • RST Button

When the switch is powered on, press the button with the needle and release the device to enter the restart state. When the SYS light is turned on again, the device restarts. When the switch is powered on, press the button for 5 seconds or more to release the button device to enter the reset status, when SYS lights up again, the device resets successfully.。

  • Console Port

The Console port is used for connecting to the serial port of a computer or other terminal to manage or configure the switch.

  • Back Panel

 Includes: power socket, ground

  • Power socket

The power supply to the switch TV-PS3024GS should be 100-240V~ 50/60Hz AC power.

  • Ground terminal

Please use a wire to the ground so that preventing lightning strikes, to avoid product lightning strikes and extend the life of the product.

Chapter 2 Product Installation

2.1 Installation Precautions

Note: To avoid damage to the equipment and personal injury caused by improper use, please observe the following precautions.

  • Installation safety precautions
  • The power is kept off during the installation process. Wear an ESD-preventive wrist strap and ensure that the ESD-preventive wrist strap is in good touch with the skin to avoid potential safety hazards.
  • The switch can work normally under the correct power supply. Please confirm that the power supply voltage matches the voltage indicated by the switch.
  • Before powering on the switch, please make sure that the power circuit is not overloaded, so as not to affect the normal operation of the switch and even cause unnecessary damage.
  • To avoid the risk of electric shock, do not open the case while the switch is working, even if it is not charged, do not open it by yourself.
    • Before cleaning the switch, pull out the power plug of the switch.
    • Do not wipe with a moist fabric. Do not use liquid to clean.


  • Temperature and humidity

In order to ensure long-term stable operation of the switch and prolong its service life, please maintain a certain temperature and humidity in the environment. Excessively high or too low ambient humidity may cause leakage, deformation or even corrosion of metal parts. If the temperature is too high, the aging process of the insulation material will be accelerated, which will seriously affect the service life of the equipment. Normal operation and storage temperature/humidity of this series of switches as below:

Environmental Description Temperature Relative humidity
Working Environment 0℃~40℃ 10%~90% RH Non-condensing
Storage Environment -40℃~70℃ 5%~90% RH Non-condensing
  • Altitude

Products with this mark are only suitable for safe use in areas below 2000m.

  • Dust-proof

Dust falling on the surface of the switch can cause electrostatic adsorption and poor contact of the metal contacts. Although the device itself has made certain measures in anti-static, when the static electricity exceeds a certain strength, it will still cause fatal damage to the electronic components on the internal circuit board. To avoid the static electricity affecting the normal operation of the device, please pay attention to the following:

Regular dust removal to keep indoor air clean, confirm that the equipment is well grounded to ensure the smooth transfer of static electricity.

  • Electromagnetic interference

Electromagnetic interference will affect the internal components such as capacitance, inductance and other electronic components by capacitive coupling, inductive coupling, impedance coupling, etc. To reduce the adverse effects caused by electromagnetic interference, please pay attention to the following:

The power supply system takes necessary measures against grid interference. The switch should be away from high-frequency, high-power, high-current equipment, such as wireless transmitters. Take electromagnetic shielding measures when necessary.

  • Lightning protection needs

When a lightning strike occurs, a strong current is generated in an instant, and the air in the discharge path is instantaneously heated to 20,000 degrees Celsius, and an instantaneous large current is enough to cause fatal damage to the electronic device. For better lightning protection, please note the following:

Confirm that the rack is in good contact with the ground. Make sure the power outlet is in good contact with the ground. Reasonable wiring to avoid internal induction lightning. Signal lightning protector is recommended for outdoor wiring.

  • Installation station requirements

Regardless of whether the switch is installed in a rack or on another horizontal workbench, be aware of the following:

Make sure the rack or workbench is stable, strong, and can withstand at least 5.5Kg weight. Make sure the rack has a good cooling system, or maintain good indoor ventilation. Make sure the rack is well grounded, the power outlet and switch are within 1.5 meters.

  • Prepare tools for installation

You may need to use a screwdriver during installation, electrostatic wrist strap, fiber optic cable, and other tools to prepare yourself

2.2 Product installation

 19-inch standard rack installation

 TV-PS3024GSis designed according to the standard 19-inch rack size, you can easily install to the rack, the specific installation steps as follows:

  • Check rack grounding and stability.
  • Install the two L-brackets in the accessory on each side of the switch panel and secure with the screws provided in the accessory.
  • place the switch in an appropriate place in the rack and be supported by the bracket. Screw the L-shaped bracket to the guide groove fixed on both ends of the rack to ensure that the switch is stable and horizontally installed on the rack.


Good grounding rack is anti-static equipment, anti-leakage, lightning protection, anti-jamming important guarantee, so to ensure that the rack ground wire properly installed; Installation equipment within the rack from the bottom up, to avoid overload installation; Avoid placing other heavy objects on the switch to avoid accidents; Ensure heat dissipation and air circulation.

Chapter3 Hardware Connection

3.1RJ45 port connection

Connect the RJ45 port of the switch and the corresponding network device via cables, the POE power supply function of the switch is default enabled on the downlink port of the switch, which can be used for IEEE802.3af or IEEE802.3at standards powered devices such as APs, bridges, and network cameras.


When the switch connected workstations, servers, routers or other Ethernet devices the cable length should be within 100 meters, The Auto-MDI / MDIX Ethernet interface is enabled by default. Category 5 the standard network cable or crossover cable can be used for Ethernet connection. Do not connect the RJ45 port to the phone line.

3.2SFP Port connection

7900SFP port only supports the Gigabit fiber module. Recommended use of standard SFP module products

The process of installing a fiber module on a switch is as follows:

First, grasp the optic fiber module from the side, insert it smoothly along with the SFP port slot until the optic fiber module and switch are in close contact.

Second, confirm the Rx and Tx ports of the fiber module when connecting, insert one end of the fiber into the Rx and Tx ports correspondingly, ensure that the Tx and Rx ends of the interface are connected correctly and the other end of the fiber is connected to another device.

Third, please check the corresponding indicator light status after power on. If the light blinking that the link is properly connected, if the light is off, the link is a failure, please check the line to confirm that the corresponding equipment is enabled.


It does not allow excessive bending fiber, the radius of curvature should not be less than 10cm.

Ensure the cleanliness of the fiber surface.

Please do not look directly into the optical fiber connector with your eyes as this may cause eye injury.

3.3 Check before power on

Check whether the outlet power supply meets the switch specifications.

Check the power, switches, racks and other equipments have been properly grounded.

Check whether the switch and other network devices are connected properly.


3.4 Device initialization

The switch automatically initializes when the power switch is turned on.

The indicator will appear in the following situation:

After the power is turned on, the power indicator remains on, the other indicator is off at this time.

After about 1 second, all lights except for the power light turn on for about 35 seconds and then turn off. when the SYS light goes flashing, the system runs normally.

Port LEDs indicate the connection status of each port, indicating that the switch has started to work normally.

3.5Web Login

Step1In the normal operation of the device, connect the computer to the switch’s RJ45 port by network cables

Step 2 Manually changed the computer IP address to 192.168.254.X (X is 2 ~ 254), the subnet mask is

Step3、Open computer’s browser, type in the address box, hit the Enter key.

Step4Enter the default username and password “admin” and then click Login.

Step5Entered the switch web management interface successfully when you see the picture as below, then you can start to configure the switch.


Categories: ,


Technical Specifications

Technical Specifications

4.1Hardware Specifications

Network standard IEEE 802.3i IEEE 802.3u IEEE 802.3x
IEEE 802.3ab   IEEE 802.3af IEEE 802.3at
Port 24 10/100/1000MbpsRJ45 port
2 gigabit SFP
1 Console
PoE 2410/100/1000Mbps RJ45 port support PoE+
Max 250W
Single port max 46W
LEDs 26 Link/Act LEDS
1 Power LED
Performance Forwarding mode: store and forward
Packet forwarding rate:38.688Mpps
8K MAC address table
Lightning protection 6KV
Input 100-240V/50-60Hz




 4.2 Software Specifications







Protocol Standard

IEEE 802.3: Ethernet Media Access Control (MAC) Protocol
IEEE 802.3i:10BASE-T Ethernet
IEEE 802.3u:100BASE-TX Fast Ethernet
IEEE 802.3ab:1000BASE-T Gigabit Ethernet
IEEE 802.3z:1000BASE-X Gigabit Ethernet (fiber)
IEEE 802.3ad: Standard method for performing link aggregation
IEEE 802.3x:flow control
IEEE 802.1p: LAN Layer 2 QoS/Cos protocol for traffic priority (multicast filtering)
IEEE 802.1q:VLAN
IEEE 802.1d:STP Spanning tree
IEEE 802.1s:MSTP Spanning tree
IEEE 802.1w:RSTP Spanning tree
IEEE 802.3af
IEEE 802.3at


Shortcut Function

One key VLAN
One key CCTV (1-8 port 250meters PoE distance)
One key AI power supply
One key Q0S (Video priority)
DHCP Support DHCP Snooping



Support 4K VLAN


Voice VLAN


MAC address table

Comply the IEEE 802.1d standard
Support MAC address learning and aging automatically
Support static, dynamic, filter address table





Password protection
Support based on the port number, IP address, MAC address restrictions on user access
Support HTTPS, SSL V3, TLS V1, SSH V1/V2
Support IP-MAC-PORT ternary binding
Support ARP protection, IP source protection, DoS protection
Support DHCP Snooping, DHCP attack protection
Support 802.1X certificated, AAA
Support port security, port isolation
Support CPU protection

POE management

Support POE power limit
Support POE chip status view
Support setting PoE port priority
Support setting PoE power supply time period
Access control (ACL) Support L2 (Layer 2) ~ L4 (Layer 4) packet filtering
Support port mirroring, port redirection, flow rate limiting, QoS re-marking
Quality of Service (QoS) Support 8 port queue
Support port priority, 802.1p priority, DSCP priority
Support SP, RR, WR, WFQ Priority scheduling algorithm

Spanning Tree

Support STP(IEEE 802.1d),RSTP(IEEE 802.1w) and MSTP(IEEE 802.1s) protocol
Support loop protection, root bridge protection, TC protection, BPDU protection, BPDU filtering


Support IGMP v1/v2 Snooping
Support fast leave mechanism
Support multicast VLAN
Supports multicast filtering, packet statistics, and unknown multicast discards.

Storm suppression

Support  multicast suppression
Support broadcast suppression
Support unknown unicast suppression


Link aggregation

Support static aggregation
Support dynamic aggregation
Support IP, MAC, and hybrid load balancing modes
Supports up to 32 aggregation groups



Support IPv6 Ping, IPv6 Tracert, IPv6 Telnet
Support IPv6 SSH ,IPv6 SSL





Management and maintenance

Support WEB network management (HTTP, HTTPS, SSL V3)
Support CLI (Telnet, SSH V1/V2, local serial port)
Support SNMP V1/V2/V3
Support LLDP, RMON
Support ARP protection, IP source protection, DoS protection
Support CPU monitoring, memory monitoring
Support system log, grading warning
Support Ping, Tracert detection, cable detection