Grandstream Networks HT503 User Manual page 49

Life Line Mode
NTP server
NTP Update Interval
Syslog Server
Syslog Level
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.
URL or IP address of the NTP server, Used to synchronize the date/time.
Default is 1440. Updates the Network Time Protocol (Values range from 5 –
1440 minutes)
The IP address or URL of syslog server, especially useful for ITSP
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)

inbound and outbound calls (INFO level)

registration status change (INFO level)

negotiated codec (INFO level)

Ethernet link up (INFO level)
HT503 User Manual
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