Grandstream Networks HT818 Administration Manual page 41

Disable Direct IP Call
Play Busy Tone When
Account is unregistered
Blacklist for Incoming
Calls
NTP Server
Allow DHCP Option 42
to NTP Server
DHCP Option 17
Enterprise Number
CDR File Option
SIP File Option
Default is No.
Deactivates Direct IP-to-IP calling function.
Default is No.
When this feature is set to Yes, device will play busy tone when the FXS port
account is not registered and the attached analog phone is off hook.
Note: When this feature is enabled, "Outgoing Call without Registration" option
need to be set to NO as well for the busy tone to be played instead of the dial tone
when the handset is placed off hook and the account is unregistered.
Allow users to block incoming calls from specific list of numbers.
Maximum allow 10 SIP numbers and each number should be separated by a comma
(',') in web UI. Other allowed characters: 26 letters (A-Z and a-z), comma (","),
asterisk ('*'), pound sign ('#') and plus sign ('+').
Defines URL or IP address of the NTP (Network Time Protocol). Used by the
HT818 to synchronize the date and time. Public NTP servers can be found at
http://www.ntp.org . Default is pool.ntp.org
Obtains NTP server address from a DHCP server using DHCP Option 42; it will
override configured NTP Server. If set to "No", the HT818 will use configured NTP
server to synchronize time and date even if a NTP server is provided by DHCP
server. Default is Yes.
This option contains vendor-specific option data, much like DHCPv4 option 43.
There is an extra difference in that in DHCPv6, this option carries a vendor ID as
well, which allows for data from multiple vendors to be provided to the device.
Default is 3561.
By default, the device will split the allowed memory for CDR file into 2 parts. Device
will create the first CDR file which is half of the allowed size, when it is full, device
will create the second file.
•
When "CDR File Option" is set to Default "Keep", device will keep the call
records when both files are full, no more new record will be stored.
•
When this feature is set to "Override", device will clear the first CDR file
and start storing again.
The CDR file output will be available at Status page: [CDR File]
By default, the device will split the allowed memory for SIP file into 2 parts. Device
will create the first SIP file which is half of the allowed size, when it is full, device will
HT818 Administration Guide
Version 1.0.27.2
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