Grandstream Networks WP820 Installation and operating instructions

Grandstream Networks, Inc.
WP820
Wi-Fi Roaming Application Note

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WP820 Wi-Fi Roaming Application Note
Table of Contents
OVERVIEW.....................................................................................................................7
WP820 WI-FI FREQUENCY AND CHANNEL ................................................................7
WP820 WI-FI ROAMING ................................................................................................7
DEPLOYMENT REQUIREMENTS..................................................................................8
IMPORTANT WI-FI PARAMETERS ON AP....................................................................9
Beacon Interval .............................................................................................................. 9
DTIM .............................................................................................................................. 9
Unicast Mode and Multicast Mode.................................................................................10
WMM (Wi-Fi Multimedia) ...............................................................................................10
Band Steering................................................................................................................10
GWN7600 .....................................................................................................................12
Wireless Configuration ..................................................................................................12
Band Steering................................................................................................................15
CISCO MERAKI............................................................................................................17
Wireless Configuration ..................................................................................................17
Band Steering................................................................................................................18
ARUBA CENTRAL .......................................................................................................20
Wireless Configuration ..................................................................................................20
Band Steering................................................................................................................23
RUIJIE CLOUD.............................................................................................................25
Wireless Configuration ..................................................................................................25
Band Steering................................................................................................................28
UBIQUITI UNIFI ............................................................................................................29
Wireless Configuration ..................................................................................................29
Band Steering................................................................................................................31
MIST..............................................................................................................................33

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WP820 Wi-Fi Roaming Application Note
Wireless Configuration ..................................................................................................33
Band Steering................................................................................................................35
HUAWEI CLOUD ..........................................................................................................36
Wireless Configuration ..................................................................................................36
EZMASTER ..................................................................................................................39
Wireless Configuration ..................................................................................................39
Band Steering................................................................................................................41
CLOUDTRAX................................................................................................................43
Wireless Configuration ..................................................................................................43
TP-LINK ........................................................................................................................46
Wireless Configuration .................................................................................................46
Band Steering................................................................................................................48

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WP820 Wi-Fi Roaming Application Note
Table of Figures
Figure 1: Wireless AP Deployment ...............................................................................................................9
Figure 2: GWN7600 Access Points Configuration ......................................................................................12
Figure 3: GWN7600 SSID Configuration ....................................................................................................13
Figure 4: GWN7600 Edit SSID ...................................................................................................................13
Figure 5: GWN7600 Band Steering - 1 .......................................................................................................16
Figure 6: GWN7600 Band Steering - 2 .......................................................................................................16
Figure 7: Cisco Meraki – Add AP ................................................................................................................17
Figure 8: Cisco Meraki – Additional Configurations ....................................................................................18
Figure 9: Cisco Meraki – Band Steering .....................................................................................................18
Figure 10: Aruba Central - App Selector .....................................................................................................20
Figure 11: Aruba Central – Create New SSID.............................................................................................21
Figure 12: Aruba Central – DTIM ................................................................................................................22
Figure 13: Aruba Central – Radio Parameters............................................................................................23
Figure 14: Aruba Central – Band Steering ..................................................................................................24
Figure 15: RuiJie Cloud – Create New Network .........................................................................................25
Figure 16: RuiJie Cloud – Create New AP..................................................................................................26
Figure 17: RuiJie Cloud – AP List ...............................................................................................................26
Figure 18: Ruijie Cloud – Wireless Configuration .......................................................................................27
Figure 19: RuJjie Cloud – Roaming Configuration .....................................................................................27
Figure 20: RuiJie Cloud – Band Steering....................................................................................................28
Figure 21: UNIFI – Wireless Network Settings ...........................................................................................29
Figure 22: UNIFI – Create New WLAN Group ............................................................................................30
Figure 23: UNIFI – Edit a Wireless Network ...............................................................................................30
Figure 24: UNIFI – DTIM.............................................................................................................................31
Figure 25: UNIFI – Band Steering...............................................................................................................32
Figure 26: Mist – Claim APs........................................................................................................................33
Figure 27: Mist – New WLAN......................................................................................................................34
Figure 28: Mist – Filtering............................................................................................................................35
Figure 29: Mist – Band Steering .................................................................................................................35
Figure 30: Huawei Cloud – Create SSID ....................................................................................................36
Figure 31: Huawei Cloud – SSID Configuration..........................................................................................37
Figure 32: Huawei Cloud – Radio Parameters ...........................................................................................38
Figure 33: ezMaster – Add Device..............................................................................................................39
Figure 34: ezMaster – Create New Project.................................................................................................40
Figure 35: ezMaster – Device Configuration...............................................................................................40

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WP820 Wi-Fi Roaming Application Note
Figure 36: ezMaster – Wireless Radio Settings..........................................................................................41
Figure 37: ezMaster – Band Steering .........................................................................................................42
Figure 38: CloudTrax – Create New Network .............................................................................................43
Figure 39: CloudTrax – Add Access Point...................................................................................................44
Figure 40: CloudTrax – Edit SSID...............................................................................................................45
Figure 41: TP-Link – Add Wireless Network ...............................................................................................46
Figure 42: TP-Link – Add SSID ...................................................................................................................47
Figure 43: TP-Link – Configure Advanced Wireless Parameters ...............................................................47
Figure 44: TP-Link – Band Steering............................................................................................................48

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WP820 Wi-Fi Roaming Application Note
Table of Tables
Table 1: WP820 Wi-Fi Frequency and Channel............................................................................................7
Table 2: WP820 Wi-Fi Roaming Options ......................................................................................................8
Table 3: Important Wi-Fi Parameters ..........................................................................................................11
Table 4: GWN7000 Wi-Fi Parameters.........................................................................................................14
Table 5: Huawei Cloud SSID Configuration Parameters ............................................................................36

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WP820 Wi-Fi Roaming Application Note
OVERVIEW
The WP820 is a portable Wi-Fi phone designed to suit a variety of enterprises and vertical market applications,
including retail, logistics, medical and security. This powerful, portable Wi-Fi phone comes equipped with
integrated dual-band 802.11a/b/g/n Wi-Fi support, advanced antenna design and roaming support, and
integrated Bluetooth for pairing with headsets and mobile devices. With the growing coverage of Wi-Fi network,
wireless access point (AP) is now widely used for small/medium enterprises, multiple-floor offices, commercial
locations and branch offices to provide seamless Wi-Fi access and mobile solutions. This document provides
a guideline for network administrator to deploy WP820 in different Wi-Fi environment to achieve the best
communication quality.
WP820 WI-FI FREQUENCY AND CHANNEL
The WP820 has built-in dual-band 802.11a/b/g/n Wi-Fi support. Below frequency and channels are supported.
Table 1: WP820 Wi-Fi Frequency and Channel
Peak Antenna Gain
Frequency Ranges
Available Channels
Channel Set
2.4GHz=2.4 dBi
5GHz=3.0 dBi
2.412 - 2.472 GHz
5.180 - 5.240 GHz
5.260 - 5.320 GHz
5.500 - 5.720 GHz
5.745 - 5.825 GHz
14
4
4
12
5
1-13
36, 40, 44, 48
52, 56, 60, 64
100-140
149, 153, 157,
161, 165
WP820 WI-FI ROAMING
To adapt to different Wi-Fi deployment, WP820 has provided several roaming options for users to configure.
Below options are available under LCD menu->Settings->Network settings->Wi-Fi roaming mode. They can
also be found in WP820 Web GUI->Network Settings->Wi-Fi Settings->Wi-Fi Roaming page.

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WP820 Wi-Fi Roaming Application Note
Table 2: WP820 Wi-Fi Roaming Options
Name
Description
Signal threshold
This is the RSSI threshold for WP820 to decide whether to switch during
roaming. If the currently connected AP has RSSI lower than this threshold,
WP820 will start looking for nearby AP with better RSSI. Default value is -
70 (dBm).
Good signal scan interval
If the currently connected AP has a higher RSSI than the threshold, WP820
will scan nearby APs at this interval. Default value is 1000 (seconds).
Poor signal scan interval
If the currently connected AP has a lower RSSI than the threshold and
there is no nearby AP that has higher RSSI than the threshold, WP820 will
scan nearby APs at this interval. Default value is 50 (seconds).
When the AP that WP820 is currently connected to has signal strength lower than the configured “Signal
threshold” on WP820, the device will try to look for a nearby AP with better RSSI. To avoid switchover back
and forth due to unstable RSSI, the WP820 will only switch over when the new AP’s RSSI is at least 8 dB higher
than the currently connected AP.
“Good signal scan interval” and “Bad signal scan interval” determine the scan interval for WP820 to find out
whether there is a better AP nearby to switch to. Normally if the currently connected AP has a higher RSSI than
the threshold, WP820 can scan at a longer interval, while a shorter value can be applied for “Poor signal scan
interval” because the currently connected AP has lower RSSI than the threshold which means WP820 should
look for a better AP in a more aggressive way.
DEPLOYMENT REQUIREMENTS
When deploying Wi-Fi network with multiple APs for WP820 to roam, please follow below guidelines:
1. Make sure the APs are properly powered up and connected to your network.
2. Connect your PC to the same network as the APs. This PC is used for configuring the APs and other
necessary devices via web GUI.
3. Access the APs using the PC’s web GUI. Configure the APs to set them up.
4. Set the same SSIDs for all the APs. SSID is case sensitive.
5. Make sure the IP addresses assigned by the APs belong to the same network segment and the same VLAN.

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WP820 Wi-Fi Roaming Application Note
During deployment, the cell edge for each AP should be designed to -67dBm and there should be 20% - 30%
overlap between adjacent APs at that signal level. Otherwise, WP820 might encounter packet loss or blind area
at the cell edge and it cannot hold the signal long enough to complete seamless switchover. To ensure seamless
roaming, it’s recommended that WP820 can always receive RSSI -67dBm or higher from the access point.
Figure 1: Wireless AP Deployment
IMPORTANT WI-FI PARAMETERS ON AP
There are several important parameters on AP for Wi-Fi configuration. Configuring them properly will enhance
WP820 roaming performance.
Beacon Interval
Beacon interval defines how often the AP transmits the 802.11 beacon management frames. Usually the default
value is 100ms. It’s recommended to keep it as default value on AP.
DTIM
This is the Delivery traffic indication message (DTIM) period in beacons. It’s recommended to set it to 2.

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WP820 Wi-Fi Roaming Application Note
Unicast Mode and Multicast Mode
In unicast mode, the controller unicasts every multicast packet to every access point associated to the controller.
In multicast mode, the controller sends multicast packets to a CAPWAP multicast group. This method reduces
overhead on the controller processor and shifts the work of packet replication to your network. It’s recommended
to use unicast mode to ensure call quality.
WMM (Wi-Fi Multimedia)
WMM is a wireless QoS protocol, a subset of the 802.11e protocol. It is used to ensure that packets with high
priority can be sent first so that service quality for voice, video and other applications can be guaranteed.
On WP820, WMM related configurations can be found undero web UI->Network Settings->Advanced Network
Settings.
Layer 3 QoS for SIP
This defines the layer 3 packet’s QoS parameter for SIP messages in decimal pattern. The value is used
for IP Precedence, Diff-Serv or MPLS. The default setting is 26 which is equivalent to the DSCP name
constant CS6.
Layer 3 QoS for Audio
This defines the layer 3 packet’s QoS parameter for RTP messages in decimal pattern. This value is used
for IP Precedence, Diff-Serv or MPLS. The default setting is 46 which is equivalent to the DSCP name
constant CS6.
WP820 will convert the QoS value to the corresponding WMM value/level so the packets can be differentiated
and handled properly by other network devices.
Band Steering
Dual band operation with Band Steering detects clients capable of 5 GHz operation and steers them to that
frequency which leaves the more crowded 2.4 GHz band available for legacy clients. This helps improve end
user experience by reducing channel utilization, especially in high density environments. It’s recommended to
enable band steering on the APs, which means by default 5Ghz should be used (users can switch to 2.4Ghz
if 5Ghz signal is poor.)
For above important parameters, the following sections provide the configuration methods on APs from different
vendors for network administrator’s quick reference. The following table shows whether the AP has the
configurations related to these parameters. Click on the brand name to quickly locate relevant configuration
instructions.

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WP820 Wi-Fi Roaming Application Note
Table 3: Important Wi-Fi Parameters
Product Model
Roam
Beacon Internal
DTIM
Multicast/Unicast
WMM
Band Steering
GWN7600
√
√
√
√
√
√
CISCO MERAKI
√
√
√
√
ARUBA
CENTRAL
√
√
√
√
√
RUIJIE CLOUD
√
√
UBIQUITI UNIFI
√
√
√
√
MIST
√
√
√
HUAWEI
CLOUD
√
√
√
√
√
EZMASTER
√
√
CLOUDTRAX
√
√
TP-LINK
√
√
√
√
√
√

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WP820 Wi-Fi Roaming Application Note
GWN7600
Wireless Configuration
1. Open a web browser on PC and enter the GWN web address to access the GWN7600/GWN7600LR web
UI configuration page.
2. Connect to the GWN7600/GWN7600LR Web GUI as Master and navigate to page “Access Points”.
3. Click on Discover AP.
Figure 2: GWN7600 Access Points Configuration
4. When using GWN7600 as Master Access Point, users have the ability to create different SSIDs and adding
GWN7600 Slave Access Points. The GWN7600 can support up to 16 SSIDs. Click on Edit to edit the SSID.

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WP820 Wi-Fi Roaming Application Note
Figure 3: GWN7600 SSID Configuration
Figure 4: GWN7600 Edit SSID
5. When editing or adding a new SSID, users will have to configure Wi-Fi. Please refer to below table for Wi-
Fi tab options.

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Table 4: GWN7000 Wi-Fi Parameters
Field
Description
Enable SSID
Check to enable Wi-Fi for the SSID.
SSID
Set or modify the SSID name.
SSID Band
Select the Wi-Fi band the GWN will use, three options are available:
• Dual-Band
• 2.4GHz
• 5Ghz
SSID Hidden
Select to hide SSID. SSID will not be visible when scanning for Wi-Fi, to connect
a device to hidden SSID, users need to specify SSID name and authentication
password manually
VLAN
Enter the VLAN ID corresponding to the SSID.
Wireless Client Limit
Configure the limit for wireless client. If there’s an SSID per-radio on a SSID,
each SSID will have the same limit. So, setting a limit of 50 will limit each SSID
to 50 users independently. If set to 0 the limit is disabled.
Enable Captive Portal
Click on the checkbox to enable the captive portal feature.
Captive Portal Policy
Select the captive portal policy already created on the “CAPTIVE PORTAL” web
page to be used in the created SSID.
Enable Schedule
Check the box and choose a schedule to apply for the selected SSID.
Security Mode
Set the security mode for encryption, 5 options are available:
• WEP 64-bit
• WEP 128-bit
• WPA/WPA2
• WPA2
• Open
WEP Key
Enter the password key for WEP protection mode.
Client Bridge Support
Configures the client bridge support to allow the access point to be configured as
a client for bridging wired only clients wirelessly to the network. When an access
point is configured in this way, it will share the Wi-Fi connection to the LAN ports
transparently.
Client Time Policy
Select a time policy to be applied to all clients connected to this SSID.
Use MAC Filtering
Choose Blacklist/Whitelist to specify MAC addresses to be excluded/included

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from connecting to the zone’s Wi-Fi. Default is Disabled.
Client Isolation
Client isolation feature blocks any TCP/IP connection between connected clients
to GWN7600/GWN7600LR’s Wi-Fi access point. Client isolation can be helpful
to increase security for Guest networks/Public Wi-Fi. Three modes are available:
•Internet Mode
•Gateway MAC Mode
•Radio Mode
RSSI Enabled
Check to enable RSSI function, this will lead the AP to disconnect users below
the configured threshold in Minimum RSSI (dBm).
Minimum RSSI (dBm)
Enter the minimum RSSI value in dBm. If the signal value is lower than the
configured minimum value, the client will be disconnected.
Beacon Interval
Configure the beacon period, which decides the frequency the 802.11 beacon
management frames AP transmits.
DTIM Period
Configure the delivery traffic indication message (DTIM) period in beacons.
Multicast to Unicast
Once selected, AP will convert multicast streams into unicast streams over the
wireless link. Which helps to enhance the quality and reliability of video/audio
stream and preserve the bandwidth available to the non-video/audio clients.
Enable 11K
Check to enable 802.11k
Enable 11V
Check to enable 802.11v
Upstream Rate
Set the maximum upstream rate
Downstream Rate
Set the maximum downstream rate
Band Steering
Band steering functions are divided into three items. Go to Access Points->configure to configure it.
2G in priority, lead the dual client to the 2G band
5G in priority, the dual client will be led to the 5G band with more abundant spectrum resources as far as
possible
Balance, access to the balance between these 2 bands according to the spectrum utilization rate of 2.4G
and 5G.

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Figure 5: GWN7600 Band Steering - 1
Figure 6: GWN7600 Band Steering - 2

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WP820 Wi-Fi Roaming Application Note
CISCO MERAKI
Wireless Configuration
1. Find the Dashboard "network" to which you plan to add your APs, or create a new network.
2. Add your APs to your network.
Figure 7: Cisco Meraki – Add AP
3. Make any additional configuration changes under the Configure section of Dashboard network. Please
make sure to review SSIDs, Access Control, Firewall & Traffic Shaping configuration pages.

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Figure 8: Cisco Meraki – Additional Configurations
Band Steering
Go to Wireless->Access control->Wireless options.
Figure 9: Cisco Meraki – Band Steering

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WP820 Wi-Fi Roaming Application Note
Band selections are:
Dual band operation: 2.4GHz and 5GHz
5GHz band only: 5GHz has more capacity and less interference than 2.4GHz, but legacy clients are not
capable of using it.
Dual band operation with Band Steering: Band Steering detects clients capable of 5 GHz operation and
steers them to that frequency, while leaving 2.4 GHz available for legacy clients.

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WP820 Wi-Fi Roaming Application Note
ARUBA CENTRAL
Wireless Configuration
The app selector lists the apps available for the Managed Service Portal portal users. The Wireless
Configuration app allows you to configure SSIDs, radio profiles, security and firewall settings, and enable
services on Instant APs. It also allows you to configure Instant APs provisioned under template groups through
configuration templates.
Figure 10: Aruba Central - App Selector
To configure WLAN settings, complete the following steps:
1. From the app selector, click Wireless Management.
2. From the group selector, select a group or a device.
3. On the left navigation pane, click Wireless Networks. The Wireless Networks page opens.
4. To create a new SSID profile, click the + icon. The Create a New Network pane opens.