Why does my AudioCodes IP Phone say 'Failed to connect server'?
If your AudioCodes IP Phone displays 'Failed to connect server' or 'Cannot find Lync server at ', ensure that 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), _sip._tcp. (for TCP).
What to do if AudioCodes 450HD IP Phone shows 'Failed to validate certificate' or 'Failed to obtain user certificate'?
If your AudioCodes IP Phone displays a certificate error, first ensure that DHCP Option 43, sub-option 5, is enabled on your DHCP server. Also, verify you can access the Skype for Business Web service URL: https://lyncsvrWebPoolFQDN:443/CertProv/CertProvisioningService.svc. Finally, check that querying the LDAP server (_ldap._tcp.) is enabled to obtain the root certificate.
What to do if AudioCodes 450HD shows 'PIN invalid phone info'?
If your AudioCodes IP Phone displays this notification, ensure the information entered on the phone screen and in the Skype for Business server interface is correct and matches. Also, verify in the Skype for Business server interface that the PIN is enabled; if not, enable it.
How to fix 'Cannot find SIP server' error on AudioCodes 450HD IP Phone?
If your AudioCodes IP Phone can't find the SIP server, make sure 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).
What to do if AudioCodes 450HD IP Phone shows 'PIN not set'?
If your AudioCodes IP Phone shows 'PIN not set', make sure a PIN was configured for the user account in the Skype for Business server interface. If not, create a PIN for the account.
How to fix AudioCodes 450HD IP Phone if it is not initializing?
If your AudioCodes IP Phone is not initializing, make sure DHCP is enabled.
How to fix 'Failed to validate certificate' on AudioCodes IP Phone?
If your AudioCodes IP Phone shows 'Failed to validate certificate' or 'Failed to obtain user certificate': * Make sure DHCP Option 43, sub-option 5, was enabled in the DHCP server. If it wasn't, enable it. * Make sure you can access the Skype for Business Web service URL: https://lyncsvrWebPoolFQDN:443/CertProv/CertProvisioningService.svc * Query the LDAP server: _ldap._tcp.. Make sure it was enabled. If it wasn't, enable it in order to get the root certificate.
What to do if AudioCodes IP Phone fails to connect to time server?
If your AudioCodes IP Phone displays 'Failed to connect to time server' or 'PIN internal error', ensure that at least one of the following is configured to enable synchronization: NTP server via DNS SRV record (_ntp._udp. pointing to NTP server), NTP server returned via DHCP Option 42, Time.windows.com, Time.nist.gov, or a manually configured Configuration Parameter.
What to do if AudioCodes 450HD shows 'Location look-up failed'?
If your AudioCodes IP Phone displays 'Location look-up failed', ensure that 'Location look up' is configured by the management shell in the Skype for Business server.
Why does AudioCodes 450HD IP Phone show 'LAN Link failure'?
The 'LAN Link failure' message on your AudioCodes IP Phone indicates that the LAN link is disconnected. This is due to a general networking problem, such as a physical cabling issue or a local or VLAN communications problem.
General| Resolution | 480 x 272 pixels |
|---|---|
| Audio Quality | HD voice |
| SIP Accounts | Up to 6 |
| Speakerphone | Full-duplex |
| Supported Languages | Multiple languages |
| Number of Lines | 6 |
| Display | 4.3 inch color LCD |
| Ethernet Ports | 2 (10/100/1000 Mbps) |
| USB Ports | 1 (USB 2.0) |
| Headset Connection | 3.5mm jack |
| PoE | Yes (802.3af) |
| Codecs | G.711, G.722, G.729, Opus |
| Protocols Supported | SIP, RTP |
| Bluetooth | Optional via USB |
Highlights of the 450HD IP Phone, including touch screen and UC capabilities.
How the phone integrates with UC environments like Skype for Business.
Contents of the package and identification of phone components.
Steps for connecting the phone's cables for power and network.
Procedures for mounting the phone on a desk or wall.
Understanding the phone's touch screen interface and idle state display.
Explains softkeys and how to navigate through phone menus.
Procedures for entering numbers, letters, and symbols using the keypad.
Steps for signing into and out of the phone for user access.
Configuring language, ring tones, call waiting, and call forwarding.
Adjusting phone volume and screen brightness for user preference.
Managing personal and corporate directories, adding, searching, and editing contacts.
Customizing function keys for speed dial, BLF, and key events.
Managing presence status and viewing calendar integration.
Core functions of making, answering, ending, and rejecting calls.
Reviewing call logs and managing voicemail messages.
Managing waiting calls, call hold, and multiple incoming calls.
Performing various call transfer types and setting up conferences.
Setting up and using Better Together over Ethernet for PC/phone integration.
Using BToE functions for enhanced Skype for Business client features.
Guidance for resolving typical phone operational problems.
To Next Page
