Introduction

Annotation

Modern tendencies of telecommunication development necessitate operators to search for the most optimal technologies, allowing you to satisfy drastically growing needs of subscribers, maintaining at the same time consistency of business processes, development flexibility and reduction of costs of various services provision. Wireless technologies are spinning up more and more and have paced a huge way for short time from unstable low-speed communication networks of low radius to broadband networks equitable to speed of wired networks with high criteria to the quality of provided services. WEP-2ac and WEP-2ac Smart are Wi-Fi access points of the Enterprise class. The devices are dedicated to be installed inside buildings as access points and to create a seamless wireless network using several identical access points (roaming) on a large area.
This manual specifies intended purpose, main technical parameters, design, installation procedure, safe operation rules and installation recommendations for these devices.

Symbols

Notes and warnings

Device description

Purpose

WEP-2ac and WEP-2ac Smart wireless access points (hereinafter the devices) are designed to provide users with access to a high-speed and safe network.

The device is dedicated to create L2 wireless networks interfacing with a wired network. WEP-2ac and WEP-2ac Smart are connected to a wired network via 10/100/1000M Ethernet interface and arrange high-speed access to the Internet for devices supporting Wi-Fi technology at 2.4 and 5 GHz.

The devices have two radio interfaces to organize two physical wireless networks.

WEP-2ac and WEP-2ac Smart support up-to-date requirements to service quality and allows transmitting more important traffic in higher priorities queues. Prioritization is based on main QoS technologies: CoS (special tags in VLAN packet field) and ToS (tags in IP packet field). Besides the standard methods of prioritization, devices allow you to assign demands for traffic transmission almost in every packet field from MAC to TCP/UDP port. The ACL rules and shaping allow you to control access, quality of service and restrictions for all subscribers as well as for each subscriber individually.
The devices are designed to be installed in offices, state buildings, conference halls, laboratories, hotels, etc. The creation of virtual access points with different types of encryption allows clients to delimit access rights among users and groups of users.

Device specifications

Interfaces:

• 1 port of Ethernet 10/100/1000BASE-T (RJ-45) with POE+ support;

• Wi-Fi 2.4 GHz IEEE 802.11b/g/n;

• Wi-Fi 5 GHz IEEE 802.11a/n/ac;

• Console RJ-45.

Functions:

WLAN capabilities:

• support for IEEE 802.11a/b/g/n/ac standards;
• data aggregation, including A-MPDU (Tx/Rx) and A-MSDU (Rx);
• WMM-based priorities and packet planning;
• Dynamic Frequency Selection (DFS);
• support for hidden SSID;
• 32 virtual access points;
• third-party access point detection;
• Workgroup Bridge;
• WDS;
• MESH;
• APSD.

Network functions:

• autonegotiation of speed, duplex mode and switching between MDI and MDI-X modes;
• support for VLAN;
• authentication support 802.1X (EAP-PEAP/TLS/TTLS/SIM/AKA);
• support for 802.11k/r;
• DHCP client;
• support for IPv6;
• LLDP;
• ACL;
• SNMP. 

Cluster operation mode:

• organizing a cluster with capacity of up to 64 access points;
• auto synchronization of access point configurations in a cluster;
• auto update of access points firmware in a cluster;
• Single Management IP – united address to control access points in a cluster;
• automatic distribution of frequency channels among access points;
• automatic distribution of output power level among access points.

QoS functions:

• priority and profile-based packet scheduling;
• bandwidth limiting for each SSID;
• changing WMM parameters for each radio interface.

Security:

• e-mail notifying on system events;
• centralized authorization via RADIUS server (WPA Enterprise);
• WPA/WPA2;
• Captive Portal;
• support for Internet Protocol Security (IPSec);
• support for WIDS/WIPS.

The figure below shows WEP-2ac application scheme.

Figure 1 – WEP-2ac application scheme

Device technical parameters

Table 1 — Main specifications

¹Defined by Transmit Power Limit and Transmit Power Control regulators

Design 

WEP-2ac and WEP-2ac Smart are housed in a plastic case.

Device main panel

The main panel layout of the device is depicted in Fig. 2.

Figure 2 – Main panel layout of the device

The following light indicators, connectors and controls are located on the main panel of WEP-2ac and WEP-2ac Smart:

Table 2 – Description of ports and controls

Light indication

The current device state is displayed by Wi-Fi, LAN, Power indicators. The list of indicators’ possible states is given below. 

Table 3 – Light indication of device state

Reset to the default settings

In order to reset the device to factory settings, press and hold the 'F' button until Power indicator starts flashing. Device will be rebooted automatically. DHCP client will be launched by default. If the address is not received via DHCP the device will have IP address — 192.168.1.10, subnet mask — 255.255.255.0 and User Name/Password to access via Web interface: admin/password.

Delivery package

The delivery package includes:

• Wireless access point WEP-2ac/WEP-2ac Smart;
• Mounting kit;
• User manual on a CD (optionally);
• Conformity certificate;
• Technical passport.

Installation order

This section defines safety rules, installation recommendations, setup procedure and the device starting procedure.

Safety rules

1. Do not install the device close to heat sources or in rooms with temperature below 5 °C or above 40 °C.
2. Do not use the device in places with high humidity. Do not expose the device to smoke, dust, water, mechanical vibrations or shocks.
3. Do not open the device case. There are no user serviceable parts inside.

Installation recommendations

1. The recommended mounting position: horizontal, on a ceiling.
2. Before installing and enabling the device, check it for visible mechanical defects. If defects are observed, stop the device installation, draw up corresponding act and contact the supplier.
3. If the device has been exposed for a long time at a low temperature, it must be left to stand for two hours at room temperature before use. After a long stay of the device in conditions of high humidity, let it stand under normal conditions for at least 12 hours before switching on.
4. During the device installation, follow these rules to ensure the best Wi-Fi coverage:
   1. Install the device at the center of a wireless network;
   2. Minimize the number of obstacles (walls, roof, furniture and etc.) between access point and other wireless network devices;
   3. Do not install the device near (about 2 m) electrical and radio devices;
   4. It is not recommended to use radiophone and other equipment operating on the frequency of 2.4 GHz, 5 GHz in Wi-Fi effective radius;
   5. Obstacles in the form of glass/metal constructions, brick/concrete walls, water cans and mirrors can significantly reduce Wi-Fi action radius. It is not recommended to place the device inside a false ceiling as metal frame causes multipath signal propagation and signal attenuation.
5. During the installation of several access points, cell action radius must overlap with action radius of a neighbouring cell at level of -65 ÷ -70 dBm. Decreasing of the signal level on cells borders to -75 dBm is permitted if it involves the use of VoIP, streaming video and other traffic that is sensitive to losses in wireless network.

Calculating the number of required access points

To calculate the required number of access points, evaluate the required coverage zone. For a more accurate assessment, it is necessary to make a radio examination of the room. Approximate radius of coverage area of WEP-2ac with a good-quality signal in case of mounting on a ceiling in typical office: 2.4 GHz 40-50 m, 5 GHz: 20-30 m. In the absence of obstacles, the coverage radius: 2.4 GHz up to 100 m; 5 GHz up to 60 m.
The table below describes rough attenuation values.

Table 4 – Attenuation values

Channel selection for neighbouring access points

It is recommended to set nonoverlapping channels to avoid interchannel interference among neighbouring access points.

Figure 3 – General diagram of frequency channel closure in the range of 2.4 GHz

For the example of channel allocation scheme among neighbouring access points in frequency range of 2.4 GHz when channel width is 20 МHz, see Figure 4.

Figure 4 – Diagram of channel allocation among neighbouring access points in the frequency range of 2.4 GHz when channel width is 20 MHz

Similarly, the procedure of channel allocation is recommended to save for access point allocation between floors, see Figure 5.

Figure 5 – Diagram of channel allocation between neighbouring access points that are located between floors

When width of used channel is 40 MHz there is no non-overlapping channels in frequency range of 2.4 GHz. In such cases, you should select channels maximally separated from each other.

Figure 6 – Channels used in range of 5 GHz when channel width is 20, 40 or 80 MHz

Device installation

The device should be attached to plain surface (wall or ceiling) in accordance with the safety instruction and recommendations listed above.
The device delivery package includes required mounting kit to attach the device to plain surface.

Wall mounting

1. Fix the bracket (included in the delivery package) to the wall:

 
Figure 7 – Attaching the bracket to a wall

1. 1. The figure shows the bracket allocation;
   2. When installing the bracket, pass wires through the corresponding channels of the bracket, see figure 7;
   3. Pass the wires into the corresponding grooves on the bracket while installing the bracket. Screw the brackets to the device surface by using screwdriver.

2. Install the device.

Figure 8 – Device installation (front view)

1. Connect cables to corresponding connector of the device.
   Description of the connectors is given in Design section.
2. Align the device and bracket together, fix the position, turning clockwise. 

Installing to false ceiling

1 – metal bracket; 2 – Armstrong panel; 3 – plastic bracket; 4 – device.

Figure 9 – Mounting to a false ceiling

1. Fasten metal and plastic bracket on a ceiling as shown in the figure 9.
   1. The plastic bracket (3) should be joined with the metal one (1) on the ceiling in the following order: metal bracket -> Armstrong panel -> plastic bracket.
   2. Cut the hole in the Armstrong panel. The size of the hole should be equal to hole of metal bracket. Conduct wires through the hole.
   3. Align holes in metal bracket with holes of Armstrong panel and plastic bracket. Align together three screw holes on the plastic bracket and the screw holes on the metal bracket. Screw the brackets to the device surface by using a screwdriver.
2. Install the device.
   1. Connect cables to corresponding connector of the device. Description of the connectors is given in Design section.
   2. Align the device and plastic bracket together, fix the position, turning clockwise.

Removing the device from the bracket

For removing the device from the bracket:

1. Turn the device counterclockwise;
2. Remove the device.

Application A. Antenna patterns of WEP-2ас and WEP-2ac Smart

2.4 GHz
5 GHz

Application B. Pin array of the device connectors

RJ-45 connector pin array
The next scheme is used for twisted-pair wiring.

RJ45-DB9 console cable pin array 

The example of implementation is shown on the following figure:

List of changes