Why doesn't my Yealink Telephone get an IP address?
If your Yealink Telephone isn't getting an IP address, check the following: * Ensure the Ethernet cable is securely plugged into the internet port and is not loose. * Verify the Ethernet cable is not damaged. * Confirm that the IP address and related network parameters are set correctly. * Make sure your network switch or hub is working. * Ensure the Wi-Fi feature is disabled.
Why does my Yealink Telephone display “No Service”?
If your Yealink Telephone displays “No Service”, ensure that an account is actively registered on the IP phone at Menu->Status->More->Accounts.
Why does my Yealink Telephone have no power?
If your Yealink Telephone has no power: * Reboot your IP phone. * Replace the power adapter.
What to do if the LCD screen is blank on my Yealink Telephone?
If the LCD screen on your Yealink Telephone is blank, verify the following: * Ensure the phone is properly plugged into a functional AC outlet. * Confirm the phone is plugged into a socket controlled by a switch that is on. * If plugged into a power strip, try plugging it directly into a wall outlet. * If your phone is PoE powered, ensure you are using a PoE-compliant switch or hub.
How to solve IP conflict problem on Yealink Telephone?
To resolve an IP conflict on your Yealink Telephone, you can: * Reset another available IP address for the IP phone. * Check network configuration via the phone's user interface at Menu->Settings->Advanced Settings (default password: admin)->Network->WAN Port->IPv4 (or IPv6). If Static IP is selected, choose DHCP instead.
Why doesn’t my Yealink Telephone upgrade firmware successfully?
If your Yealink Telephone isn’t upgrading firmware successfully, check the following: * Ensure that the target firmware is not the same as the current firmware. * Ensure that the target firmware is applicable to the IP phone model. * Ensure that the current or the target firmware is not protected. * Ensure that the power is on and the network is available during the upgrade. * Ensure that the web browser is not closed or refreshed when upgrading firmware via the web user interface.
Why do I get poor sound quality during a call on my Yealink Telephone?
Poor sound quality during a call on your Yealink Telephone can be due to several factors: * Users being too far from the microphone or too close to sensitive microphones. * Packet loss and jitter due to network congestion. * Noisy equipment causing interference. Turn off any noisy equipment. * Line issues. Try disconnecting the old line and redialing to see if another line provides a better connection.
Why doesn’t my Yealink Telephone display time and date correctly?
If your Yealink Telephone doesn’t display the correct time and date: * Check if the IP phone is configured to obtain the time and date from the NTP server automatically. * If your phone is unable to access the NTP server, configure the time and date manually.
Why doesn’t my Yealink Telephone update the configuration?
If your Yealink Telephone isn’t updating its configuration: * Ensure that the configuration is set correctly. * Reboot the phone, as some configurations require a reboot to take effect. * Ensure that the configuration is applicable to the IP phone model. * Be aware that the configuration may depend on support from a server.
Why does the Bluetooth headset affect Yealink Telephone’s voice quality?
Your Yealink Telephone's voice quality may be affected if you use a Bluetooth headset while the 2.4 GHz band is enabled or in an environment with many other Bluetooth devices.
General| Manual | Yes |
|---|---|
| Cables included | LAN (RJ-45) |
| Number of handles included | 1 pc(s) |
| Lines quantity | 12 lines |
| Phonebook capacity | 1000 entries |
| Number of VoIP accounts | 12 |
| Mounting | Desk/Wall |
| Handset type | Wired handset |
| Product type | IP Phone |
| Product color | Black |
| Voice codecs | CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC |
| Operating temperature (T-T) | -10 - 50 °C |
| Operating relative humidity (H-H) | 10 - 95 % |
| Display diagonal | 2.7 \ |
| Display resolution | 192 x 64 pixels |
| AC adapter input voltage | 100 - 240 V |
| AC adapter output current | 1.2 A |
| AC adapter output voltage | 5 V |
| Dual-Tone Multi-Frequency (DTMF) modes | In-band, Out-of band, SIP info |
| Volume control | Digital |
| Number of programmable keys | 6 |
| USB 2.0 ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 2 |
| Networking standards | IEEE 802.3af |
| Ethernet LAN data rates | 10, 100 Mbit/s |
| Ethernet LAN interface type | Fast Ethernet |
| Supported network protocols | SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS |
Weight and Dimensions| Depth | 189 mm |
|---|---|
| Width | 212 mm |
| Height | 175 mm |
| Package depth | 223 mm |
| Package width | 246 mm |
| Package height | 120 mm |
Provides information on other documents for phone functionality. Includes Release Notes and Quick Start Guides.
Details the distinct hardware types of Yealink T4 series phones, including screen and ports.
Explains how user screens and icon indicators help navigate phone status.
Describes icons in the status bar for phone status, calls, and messages.
Details icon indicators associated with line status and features for T48S/T48G models.
Details icon indicators associated with line status and features for T46S/T46G models.
Explains how to use the touch screen keyboard for data entry on T48S/T48G phones.
Describes using the phone's keypad and dial pad for data entry and special characters.
Guides on how to manually change the default account for placing calls.
Instructions on various methods for placing calls using the phone.
Details how to answer incoming calls manually or automatically.
Explains options to silence or reject calls instead of answering them.
Covers blind, semi-attended, and attended call transfers.
Instructions for setting up and managing three-way local and multi-way network conferences.
Guides on recording active calls onto a USB flash drive.
Explains how to broadcast audio announcements to specific groups using line keys.
Describes how to automatically receive paging calls when the phone is idle.
Allows monitoring busy parties and establishing calls when they become available.
Enables answering incoming calls to other phones or groups.
Explains parking calls and retrieving them from different locations.
Monitors remote line status via BLF keys, showing idle, ringing, or busy states.
Supports sharing a line across multiple phones for simultaneous use.
Facilitates quick connections with operators or secretaries via intercom calls.
Manages text messages, including reading, sending, replying, and deleting.
Allows leaving and listening to voice mail messages.
Enables logging out of current accounts and logging into new ones to share phone resources.
Distributes large volumes of incoming calls in customer service environments.
Manages contacts and groups, allowing search, add, edit, and delete operations.
Manages frequently called contacts, allowing adding, viewing, reordering, and deleting.
Blocks unwanted callers by rejecting incoming calls automatically.
Accesses Google Contacts, listing contacts and groups within your Google account.
Accesses corporate directories for contacts, allowing search and saving.
Explains icons representing call history status like received, missed, placed, or forwarded calls.
Details how to view saved call information like caller name, number, and duration.
Allows saving call history records to the Local Directory for future identification.
Guides on changing the default administrator password for security.
Explains how to change the phone's background picture on idle or dsskey screens.
Details setting waiting time, disabling icons, and adding custom screen savers.
Adjusts screen brightness levels during phone activity and inactivity.
Allows adjustment of screen contrast for better readability.
Guides on selecting a preferred language for the phone interface.
Covers manual setting and formatting of the phone's time and date.
Explains how to customize soft key functions for quick access.
Secures the phone by preventing unauthorized access to menus or functions.
Guides on adjusting the volume for ringer, media, and calls.
Allows setting distinctive ring tones for contacts, groups, or accounts.
Turns off keypad sounds for a silent typing experience.
Details support for analog, USB, Bluetooth, and wireless headsets.
Covers activating, pairing, connecting, and syncing Bluetooth devices like headsets and phones.
Guides on connecting to Wi-Fi networks, managing saved networks, and troubleshooting.
Explains connecting and configuring the EXP40 expansion module.
Lists common issues like default password, registration failure, or network unavailability.
Shows how to view details about phone warnings on the Status screen.
Provides instructions on how to restart the phone to resolve malfunctions.
Guides on resetting the phone to factory defaults to resolve persistent issues.
Explains how to update phone configuration without restarting.
Details how to manually clear personalized configuration settings on the phone.
Provides a visual menu structure for the T48S/T48G phone model.
Provides a visual menu structure for the T46S/T46G phone model.
Provides a visual menu structure for T42S/T42G/T41S/T41P/T40P/T40G phone models.
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