T-20 Provisioning Guide


Provision a Phone Provided by Phonebooth

If you purchased your phone from Phonebooth, you will not need to configure your phone. It should come pre-configured and ready to go. All you will need to do is:

  1. Assign the MAC(serial) address of the phone (found on the back of the phone) to the appropriate User in the Phonebooth Administrative Portal. You must have Admin Permission in order to perform this task.
  2. Once the MAC of the phone is assigned to the User, unplug the phone from power for 10 seconds than then plug it back in.
  3. Please test to make sure the phone can make an outbound and inbound call with audio flowing in both directions.

See General Troubleshooting below if you run into an issue.

Provision a Customer Provided Phone or Manual Configuration

If you are providing you own phone, there are a few steps you will need to follow in order to ensure a successful configuration.

Step 1: Add The Device

The first thing needed is to add the device to the Phonebooth service. This will allow the phone to configure automatically and allow the Administrator(s) to assign the device to  a User. Find the directions  for adding a device here.

Step 2: Reset the Phone to Factory Default

Unless you are sure that your phone has never been setup on another provider, you should always strive for a clean slate.

  1. Press the "OK" button for 10 seconds
  2. Choose "Yes"
  3. Wait for the Phone to reboot

Step 3: Configure Your Phone for Phonebooth Auto-provisioning

  1. Press the "OK" button on the phone to see the phone status, this will show the IP address.
  2. Open your web browser and enter the IP Address into the address bar of your browser
  3. When prompted, enter the Default Username admin and password admin
  4. Click on the "Upgrade Tab" across the top of the page
  5. Go to the "Advanced" Section
  6. Enter http://pb2.bandwidth.com/device in the "URL" field
  7. Then in the Check New Config drop-down field choose "Power On"
  8. Click on "Confirm" button
  9. Unplug the power on the phone and wait 6 seconds.
  10. Then plug in the phone.

Your phone should now come up. Make sure to assign the Phone to a User account in the Phonebooth Administrative Portal (always reboot the phone after making changes).

Assigning The Phone to a User in the Phonebooth Admin Portal

Configuring the phone si only part of the overall process. In order for the Phone to work it must know who it belongs to. To assign the phone to a User:

  1. Log into your Local Administration Portal (you must be a company Administrator)
  2. Click on the red "Users" button
  3. Navigate to the User you wish to assign the phone to in the "Users List"
  4. Edit the User
  5. Find the MAC address in the "Device" drop-down field.
  6. Finally unplug the power on the phone and wait 10 seconds.
  7. Then plug in the phone.

When the phone comes up it should have the correct extension in the display and be ready to make calls.

How to Find the MAC Address of your Yealink T20 IP-Phone

The MAC address for a Yealink phone always starts with 0015 and is a 12 digit number. See below:

General Troubleshooting

Phone will not power up

  • Make sure AC power is connected properly.
  • If using Power over Ethernet (PoE), check you switch settings.

Phone display say "Unknown_Exten"

  • This means your phone is not assigned to a user in the portal
  • Assign the User in the portal and reboot the phone
  • Make sure your firewall/router doe not have any SPI or ALG functionality turned on.

Phone Says Initializing and never comes up

  • Check to make sure your router is set to hand out IP addresses via DHCP (we do not support static networks for our phones by default)
  • Check your Internet connection
  • Make sure your phone is on our Supported List

I can't assign the MAC to the User in the Portal

  • Make sure your User is assigned an extension or you will be unable to assign a device.
  • Make sure you have added the Phone's MAC address via the portal.

I am unable to make outbound calls

  • Check your Internet connection
  • Make sure your firewall/router doe not have any SPI or ALG functionality turned on.

I am getting one-way or no-way audio

  • This is always a firewall/router issue try:
  • Make sure your firewall/router doe not have any SPI or ALG functionality turned on.

Call drops after a few seconds/minutes

  • This is either firewall related or  Internet access quality related
  • Check your firewall for SPI or ALG and check with your Internet provider.
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