How to improve LCD screen display on AudioCodes IP Phone?
If the LCD screen display on your AudioCodes IP Phone is poor, try adjusting the phone’s screen contrast level. You may also want to adjust the screen’s backlight timeout.
How to renew expired PIN on AudioCodes IP Phone?
If your AudioCodes IP Phone displays 'PIN expired', renew the PIN expiration policy in the Lync server interface.
What to do if AudioCodes 420HD shows 'PIN account disabled'?
If your AudioCodes IP Phone displays 'PIN account disabled', verify that the account is enabled in the Lync server interface. If it is not enabled, enable it.
How to fix 'Failed to validate certificate' on AudioCodes 420HD IP Phone?
If your AudioCodes IP Phone displays 'Failed to validate certificate' or 'Failed to obtain user certificate', ensure DHCP Option 43, sub-option 5, is enabled on your DHCP server. Also, verify access to the Lync Web service URL: https://lyncsvrWebPoolFQDN:443/CertProv/CertProvisioningService.svc. Finally, ensure the LDAP server (_ldap._tcp.) is enabled to obtain the root certificate.
What to do if AudioCodes 420HD IP Phone shows 'Registration...' and calls fail?
If your AudioCodes IP Phone displays a 'Registration…' message and you cannot make or receive calls, it means the line is not registered to the network. Contact your system administrator for assistance.
Why is my AudioCodes 420HD IP Phone not turning on?
If your AudioCodes IP Phone is off, with no LCD displays or LEDs, the phone is likely not receiving power. Verify the AC/DC power adapter is firmly attached to the DC input on the rear of the phone and plugged into a functional electrical outlet. If you're using Power over Ethernet (PoE), contact your system administrator to ensure the switch is supplying power.
How to fix poor LCD display on AudioCodes 420HD IP Phone?
To fix a poor LCD display on your AudioCodes IP Phone, adjust the phone’s screen contrast level and the screen’s backlight timeout.
What to do if my AudioCodes IP Phone is off (no LCD displays and LEDs)?
If your AudioCodes IP Phone is off, meaning there are no LCD displays and LEDs, it indicates the phone isn't receiving power. Here's what you should check: * Ensure the AC/DC power adapter is firmly connected to the DC input on the phone's rear. * Confirm the AC/DC power adapter is properly plugged into a functional electrical outlet. * If you're using Power over Ethernet (PoE), contact your system administrator to ensure the switch is providing power to the phone.
How to troubleshoot no audio in headset connected to AudioCodes IP Phone?
If you have no audio in your headset when connected to your AudioCodes IP Phone, consider the following: * Ensure your headset is securely plugged into the headset port on the side of the phone. * Verify that the headset volume level is adjusted adequately (see Section 4.9.5).
What to do if AudioCodes IP Phone displays 'LAN Link Failure'?
If your AudioCodes IP Phone displays a 'LAN Link Failure' message, it indicates there is no LAN connection. Here’s how to troubleshoot: * Verify that the LAN cable is securely connected to the LAN port on the rear of the phone. * Ensure the other end of the LAN cable is connected to the network switch. If it is not, inform your system administrator.
General| Brand | AudioCodes |
|---|---|
| Model | 420HD |
| Category | IP Phone |
| Language | English |
Overview of AudioCodes' HD IP Phone series for enhanced voice quality.
Details on advanced voice technology, wideband coders, and audio enhancements.
Guide to unpacking phone components and checking for presence and damage.
Introduction to the phone's hardware features and components.
Description of the front panel layout and its components.
Description of the rear panel ports and connections.
Instructions for connecting cables to the phone for network and power.
Options for mounting the phone on a desk or wall.
Step-by-step guide for placing the phone on a desk or flat surface.
Instructions on how to route the handset cable for neatness.
Step-by-step guide for mounting the phone securely on a wall.
Familiarization with the phone's LCD display in idle state.
Explanation of various softkey functions available on the phone's LCD.
Guide to navigating the phone's menu structure for configuration and information.
List of messages displayed on the LCD during phone processes.
How to switch input modes on the keypad for entering characters and symbols.
Instructions on how to sign out of the phone session.
Method to sign out using the Web interface when the softkey is unavailable.
How to change the display language on the phone's LCD.
How to choose and set a ring tone for incoming calls.
How to enable or disable the call waiting feature.
How the phone displays and handles multiple incoming calls.
Setting the phone to reject calls when busy.
How to automatically redirect incoming calls to another number or voicemail.
Configuring date, time, and time zone settings, often via NTP.
Adjusting the contrast of the phone's LCD screen for better visibility.
Setting the duration the phone's backlight remains on when idle.
Choosing between speaker or headset for call activation.
Setting or displaying geographical location information for calling parties.
Configuring the outbound proxy for hosted Lync environments.
Adjusting volume levels for various audio outputs like ring, tones, handset.
How to adjust the volume of the incoming call ring.
How to adjust the volume for dial tones and call progress tones.
Adjusting the volume for the handset during calls.
Adjusting the volume for the speakerphone during calls.
Adjusting the volume for a connected headset during calls.
Adding, editing, and managing contacts in the personal directory.
How to access the phone's contact directories.
Step-by-step guide to adding new contacts to the personal directory.
How to modify existing contact details in the personal directory.
How to remove contacts from the personal directory.
Methods for quickly locating contacts within the directory.
Using T9 predictive text for searching corporate contacts.
Switching between T9 and standard input modes for directory search.
Setting up phone keys for quick dialing of contacts.
Step-by-step process to assign a speed dial key to a contact.
How to modify existing speed dial entries.
How to remove assigned speed dial entries.
Configuring phone keys for group paging functionality.
Setting and managing your availability status visible to others.
Instructions on using the handset, speaker, and headset for calls.
Various methods for initiating phone calls.
How to dial regular numbers and URLs.
How to redial previously dialed numbers.
How to dial a number from the list of missed calls.
Procedures for answering incoming calls using different devices.
How to decline an incoming call.
How to mute the ringing of an incoming call.
Methods for terminating an active call.
Accessing call logs for missed, received, and dialed calls.
How to handle and switch between multiple incoming calls.
How to put an active call on hold and retrieve it.
How to initiate a call to a contact stored in the directory.
How to use pre-configured speed dial keys to make calls.
Procedures for transferring calls to other parties.
How to perform a transfer after speaking with the recipient.
Performing consultative transfers using only softkeys.
How to perform a transfer without speaking to the recipient first.
How to place a call in a parking lot for later retrieval.
Setting up group call pickup to answer calls for other users.
How to set up and manage conference calls with multiple participants.
How to mute the microphone during calls.
Functionality for broadcasting audio messages to a group.
How to initiate paging calls to a group.
How to receive and respond to paging calls.
Integrating the IP phone with Skype for Windows client via BTOE.
Step-by-step guide to installing the BTOE software on a PC.
Verifying the successful installation of the BTOE application.
How to configure the TCP port for BTOE communication.
Process of pairing the BTOE PC application with the IP phone.
How to generate a unique pair code for device connection.
Steps to connect the IP phone and PC application using the pair code.
Linking the Skype for Windows client to the IP phone via login.
Verifying the successful pairing between the IP phone and Skype client.
Checking if the Skype for Windows client is correctly paired with the phone.
Checking the phone's status to confirm pairing with the Skype client.
Utilizing BTOE features for enhanced unified communications.
Signing into the IP phone from the Skype for Windows PC client.
Making calls from the PC client or IP phone, with mirrored operations.
How to initiate and manage conference calls using BTOE.
Answering calls via the Skype client or IP phone for convenience.
Transferring calls from either the PC client or the IP phone.
How to access and listen to voice mail messages on the phone.
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