Setting up a multi-cell DECT (Poly or Yealink) in Zoom

This post was most recently updated on July 28th, 2022

It is possible to connect multiple DECT base stations to a DECT IP PBX through the use of this multi-cell system, which allows roaming and handoff features. Compared to a single DECT base station, this system can support more handsets, a wider coverage area of the DECT signal, and more simultaneous calls.

Poly

There are setup guides available on Poly’s support site for multi-cell DECT systems.

Yealink

Note: A simple explanation of how to set up Yealink‘s Multi-Cell DECT System will be given in the following section using the examples of the W80DM and W80B. If you want to know more about the W90DM and W90B, you can follow this article as well.

Below is a list of Yealink base stations that have been certified by Yealink:

Device Description
W80DM DECT Manager A minimum of one
W80B Base Stations It is possible to have up to 30 DECT managers
Handsets (Mobile Devices) Per DECT manager, there can be up to 100 users
Device Description
W90DM DECT Manager A minimum of one
W90B Base Stations Depending on the DECT manager, there can be up to 60 users
Handsets (Mobile Devices) DECT managers can handle up to 250 users at a time

The W80DM (Display Module) can only connect to the W80B (Base Station) via the internal network, so regardless of how far away the W80B and W80DM are, it will always be able to connect and sync with the DM. A DECT signal is used to establish a connection between a base and a base, so the handsets can roam and handover among the bases as long as it is within the coverage area of the DECT signal.

Powering on the W80B

The power and the network should be connected using either method a or method b.
a. AC Power Option
b. PoE (Power over Ethernet) Option

Upon connecting the W80DM/W80B to the power and network, the following is shown in the LED status:

Base Mode Option Role DECT LED ROLE LED LAN LED
1 Base Off Green Green
2 DM Off Orange Green

 

Obtaining the IP address of W80DM and W80B

In order to get the IP address of the W80B, there are two methods:

Option 1 (recommended): Yealink Discovery Tool

  1. The Yealink Discovery Tool can be downloaded and installed on your computer.
  2. You will need to open the Yealink IP Discovery Tool in order to see the results.
  3. The IP segment in which the W80DM or W80B Base are located should be entered. Here is an example of how IP segments can be formatted:
    192.168.[1, 3, 5-10].[2-10, 15-200].
  4. When you click on the Scan button, you will be able to find the IP and MAC address of W80B.

It might be helpful, for example, to use 192.168.0.[0-254] as a search rule to find out which W80Bs are under 192.168.0.X and then click Scan. The list will display all W80Bs including the DMs, bases, and contexts. You can then find the IP addresses and the MAC addresses that match the W80Bs.

Option 2: DHCP server

  1. If you want to use DHCP on your local network, make sure the network supports it.
  2. You can find the IP address of W80B by using an application or your system.

Connecting the W80B base station to W80DM

There are two phases to the entire registration process: the discovery phase and the registration phase.

Making the W80DM discover the W80B

  1. The W80B base station can be accessed via the web UI by signing into the account.
  2. Select Status then Base Mode from the left-side navigation menu on the left side of the screen.
  3. It is important that the IP address of W80DM be entered in the DM IP field in order for the base to be directed to the DM.

Registering the W80B to the W80DM

  1. The W80DM can be accessed via the web UI by logging in.
  2. Click on Base Station in the left-side menu, click Base Station Registration in the right-hand navigation menu, and then click the icon in the Operation column that appears.
  3. The following are some configurations that need to be configured for the base.
    The base will be able to connect to DM and sync with it, as well as update its firmware to be compatible with DM. If the connection is successful, the status of the Base Station Settings will show Active and synced after you have successfully connected.
  4. It is possible to make changes to the settings of the base station by clicking Edit in the list of registered stations.

A DECT LED positioned on the front of the W80B will display the status of the base, if it is active and synced:

Base mode option Role DECT LED Role LED LAN LED
1 Base Green Green Green
2 DM Green Orange Green

 

Registering handsets on the W80 DM

There are 2 ways to register handsets.

  • Manually registering a handset to the W80DM is recommended if there are only a few handsets that need to be registered.
  • Using Registration Center is a great way to register a group of handsets for the W80DM in a single registration process if you have more than one handset which needs to be registered. As soon as the handset is bounded to the SIP account, the system will automatically register it and assign the SIP account that is associated with it.

Registering Handsets Manually

  1. To access the web UI for the W80DM, you will need to sign in.
  2. You can choose Handset & Account from the menu on the left-hand side, and then choose Handset Registration from the menu on the right.
  3. Click on the Add Handset button.
  4. To set the DM to register the handset, click on the Start Register Handset button.
  5. You can do this by pressing OK, then going to Settings, then going to Registration, and then pressing Register Handset.
  6. The handset can be registered to the desired base by selecting it from the list.
    There is a default pairing pin code of 0000 that is used for the pairing process. As soon as the handset has been subscribed, you will be able to see Handset Subscribed on the screen of the handset.

Using Registration Center to register the handsets in a batch

  1. Using the web interface of the W80DM, you will be able to sign in.
  2. Click Handset & Account in the left-side navigation menu and then click Handset Registration in the right side navigation menu.
  3. Click on the Add Handset button.
  4. Adding a handset’s IPUI is optional; once the handset is registered to the W80DM, fill in the SIP account information for the corresponding handset so that this account can be binded to the handset immediately once it registers.
  5. The IPUI code of the W56H/W53 handset can be found by navigating to OK > Status > Handset > IPUI Code on the handset.
  6. The web interface can be accessed by going back to Handsets & Accounts then registering all the handsets in a batch by clicking on the Registration Center button.

Note: At the moment, there is only one SIP account that can be assigned to one handset, and only one SIP account can be assigned to one handset.

Positioning the base station

A DECT system that includes multiple cells has the most important feature of roaming and handover. In the event that the DECT signal switches from one W80B base to another, you should test the quality of the call. With the handset’s Metering Mode, you can check the signal strength of the DECT network at any location that has a nearby base station to see if there is a strong signal.

In accordance with the metering data, the W80B can be placed at the best location for coverage and synchronization of the signal based on its metering data.

Measuring the signal strength of the W80B

  1. Use the metering mode by registering the handset to the base.
  2. The base should be fixed at the preset position as soon as possible.
  3. Press the following codes on the handset: *1383201# or *1234203#.
  4. The measuring mode can be enabled by going to Menu > Settings > Telephony > Metering Mode under the Settings menu.
  5. On the handset screen, you should be able to see the signal strength.
  6. The information will appear at the top of the screen while the user is in the middle of the current call. If the roaming and handover functions are working properly between the base and the base, you will be able to check the audio quality and connectivity.

Metering mode parameter details

  • RSSI: An indication of the strength of the received signal. A dBm measurement of the best reception strength of a base station’s signal.
    • It is recommended that the value be between -27dBm and -85dBm. (Subject to the actual nature of the call)
      Note: It is standard to display RSSI values in dBm; however, it is possible to change them to percentage values if you prefer.
    • There should be a RSSI of at least -80 dBm in order to ensure good voice quality
    • It is recommended that the RSSI value be greater than -85dbm in order to ensure a good base synchronization.
  • Fr. quality:
  • The quality of the frames. In the last measurement interval, this percentage represents the number of packages which were received without error. To ensure that there is no packet loss in the frame, the frame quality should be 100%;
    A value of 100% is recommended.
  • Base Station: A radio fixed part number (RPN) is a unique number that identifies the base station. In the case of a handset connected to a base station, an identifier is assigned for that base station.
  • Frequency: The frequency at which the signal was received is known as the carrier frequency.
  • Value range: 0-30.
  • Slot pair: Time slot in which the measurement was conducted on the reception channel from which the information was received.
  • Duplex Slot pair used (0-11).