How to resolve 'PIN not set' on AudioCodes 400HD IP Phone?
If your AudioCodes IP Phone displays 'PIN not set', make sure in the Skype for Business server interface that a PIN was configured for this user account. If it wasn't, create a PIN for the account.
What does 'PIN invalid phone info' mean on AudioCodes 400HD?
If your AudioCodes IP Phone displays 'PIN invalid phone info', make sure the correct information was entered in the phone screen and in the Skype for Business server interface, and that they tally. Also, verify in the Skype for Business server interface that the PIN is enabled and if it isn't, enable it.
How to fix 'Failed to validate certificate' on AudioCodes 400HD?
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.
Why does my AudioCodes 400HD 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 400HD 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.
Why does my AudioCodes IP Phone headset have no audio?
If you're not getting any sound through your AudioCodes IP Phone headset, first ensure it's securely plugged into the headset port on the phone's side. Also, check that the headset volume is set to an audible level.
What to do if my AudioCodes 400HD is off?
If your AudioCodes IP Phone isn't turning on, start by ensuring the AC/DC power adapter is firmly connected to the DC input on the phone's rear and plugged into a functional electrical outlet. If you're using Power over Ethernet (PoE), contact your network administrator to verify the switch is providing power to the phone.
How to fix AudioCodes 400HD headset with no audio?
If your headset has no audio on your AudioCodes IP Phone, verify that your headset is securely plugged into the headset port on the side of the phone. Also, check that the headset volume level is adjusted adequately.
What to do if my AudioCodes IP Phone fails to connect to the domain server?
General| Type | IP Phone |
|---|---|
| Audio Quality | HD Voice |
| Ethernet Ports | 2 |
| Display | Graphical LCD |
| Display Size | 2.8 inches |
| Connectivity | Ethernet |
| Power over Ethernet | Yes |
| Headset Port | Yes (3.5mm) |
| Supported Codecs | G.711, G.722, G.729, iLBC, Opus |
| Supported Protocols | SIP, RTP, RTCP, HTTP, HTTPS, TFTP, DNS, DHCP, TLS, SRTP |
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