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).
How to resolve 'Duplicate IP' error on AudioCodes 420HD?
If your AudioCodes IP Phone displays 'Duplicate IP', delete the duplicate IP address in the DHCP server and request a new one.
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.
How to fix AudioCodes IP Phone when it is off (no LCD or LEDs)?
If your AudioCodes IP Phone is off, with no LCD display or LEDs, the phone is likely not receiving power. Here’s what you can check: * Ensure the AC/DC power adapter is firmly attached to the DC input on the rear of the phone. * Confirm the AC/DC power adapter is plugged into a functional electrical outlet. * If you're using Power over Ethernet (PoE), contact your system administrator to verify the switch is providing power to the phone.
What to do if my AudioCodes 420HD displays 'Registration...' and I cannot make calls?
If your AudioCodes IP Phone displays a 'Registration…' message on the LCD, and you cannot make or receive calls, it means the line is not registered to the network. If your phone supports multiple lines, an 'X' displayed on the LCD indicates a line registration failure. Contact your system administrator for assistance.
What to do if AudioCodes 420HD IP Phone says 'PIN not set'?
If your AudioCodes IP Phone displays 'PIN not set', verify in the Lync server interface that a PIN was configured for the user account. If a PIN hasn't been set, create one for the account.
How to fix 'Location look-up failed' on AudioCodes IP Phone?
If your AudioCodes IP Phone displays 'Location look-up failed. Please enter your address.', ensure that 'Location look up' is configured by the management shell in the Lync server.
How to resolve 'Failed to connect server' on AudioCodes IP Phone?
If your AudioCodes IP Phone displays 'Failed to connect server' or 'Cannot find Lync server at ' and cannot perform registration, ensure at least one of the following is enabled in the DNS server: _sipinternaltls._tcp. (for TLS), DHCP results (Option 120) (for TLS), _sipinternal._tcp. (for TCP), DHCP results (Option 120) (for TCP), _sip._tls. (for TLS), or _sip._tcp. (for TCP).
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 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.
General| Brand | AudioCodes |
|---|---|
| Model | 420HD |
| Category | IP Phone |
| Language | English |
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