Grandstream HT503 User Manual - Manual (Page 41)

FIRMWARE VERSION 1.0.14.1 HT503 USER MANUAL Page 39 of 64
sounds. ON is the period of ringing (“On time” in ‘ms’) while OFF is the period of
silence. In order to set a continuous tone, OFF should be zero. Otherwise it will ring ON
ms and a pause of OFF ms and then repeat the pattern.
Example for North America Dial Plan:
f1=350@-13,f2=440@-13,c=0/0;
Syntax: f1=freq@vol, f2=freq@vol, c=on1/off1-on2/off2-on3/off3;
(Note: freq: 0 - 4000Hz; vol: -30 - 0dBm)
Note : Maximum supported cadences is 3
Prompt Tone Access
Code
Key pattern to get Prompt Tone. Maximum 20 digits. No Default.
Lock Keypad Update If set to “Yes”, the configuration update via keypad is disabled. Note: some informative
options still will be available for users after configuring to Yes. Changing existing
configuration will be impossible.
Disable Voice Prompt Disables the voice prompt configuration. Default is “No. ” If set to “Yes” accessing
integrated voice menu will be impossible.
Disable Direct IP Calling Disables the Direct IP Call function. Default is “No.” ” If set to “Yes” to make direct IP
call will be impossible.
Life Line Mode Life line feature ensures user can place/receive a PSTN call in an emergency situation.
1. If set to “Auto”, in case of power loss or loss of SIP registration, the PSTN line
will be seamlessly connected to analog phone connected to FXS port.
2. If set to “Always Connected” the PSTN line will be always connected to the
phone connected to FXS port. VoIP calls will not be allowed in this
configuration.
3. If set to “Always Disconnected”, user can only place VoIP calls, regardless of
any power loss and/or SIP registration problems. User will be unable to
place/receive any PSTN calls.
NTP server URL or IP address of the NTP server, Used to synchronize the date/time.
NTP Update Interval Default is 1440. Updates the Network Time Protocol (Values range from 5 – 1440
minutes)
Syslog Server The IP address or URL of syslog server, especially useful for ITSP
Syslog Level Select the ATA to report the log level. Default is NONE. The level is either one of
DEBUG, INFO, WARNING or ERROR. Syslog messages are sent based on the
following events:

product model/version on boot up (INFO level)

NAT related info (INFO level)

sent or received SIP message (DEBUG level)

SIP message summary (INFO level)