Grandstream Networks HT503 Lock Keypad, Prompt, Disable Direct IP, Calling, Life Line Mode

	(Note: freq: 0 - 4000Hz; vol: -30 - 0dBm)
Lock Keypad	If set to “Yes”, the configuration update via keypad is disabled. Note: some informative
Update	options still will be available for users after configuring to Yes. Changing existing
	configuration will be impossible.
Disable Voice	Disables the voice prompt configuration. Default is “No. ” If set to “Yes” accessing integrated
Prompt	voice menu will be impossible.
Disable Direct IP	Disables the Direct IP Call function. Default is “No.”				” If set to “Yes” to make direct IP call will
Calling	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.
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)
		• inbound and outbound calls (INFO level)
		• registration status change (INFO level)
		• negotiated codec (INFO level)
		• Ethernet link up (INFO level)
		• SLIC chip exception (WARNING and ERROR levels)
		• memory exception (ERROR level)
	The Syslog uses USER facility. In addition to standard Syslog payload, it contains the
	following components: GS_LOG: [device MAC address][error code] error message
	Ex. May 19 02:40:38 192.168.1.14 GS_LOG: [00:0b:82:00:a1:be][000] Ethernet link is up
Download Device	This is a special feature that enables the user to create a text file backup of your existing
Configuration	configuration.
TABLE 10: FXS PORT SETTINGS
Account Active			When set to yes the FXS port is activated.
SIP Server			This field contains the URL string or the IP address (and port, if different from 5060) of
			the SIP proxy server. e.g., the following are some valid examples: sip.my-voip-
			provider.com, or sip:my-company-sip-server.com, or 192.168.1.200:5066
Failover SIP Server			This Field contains the URL or the IP address of a second SIP server, this one will be
			used in case the device looses the connection with the first server.
Outbound Proxy			IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border
			Controller. Used by ATA for firewall or NAT penetration in different network
			environment. If symmetric NAT is detected, STUN will not work and ONLY Outbound
			Proxy will work.
SIP Transport			User can select UDP or TCP or TLS.
NAT Traversal (STUN)			This setting decides whether the NAT traversal mechanism is activated. It should be
			set to “Yes” if the device is behind a NAT router. If no outbound proxy is configured, a
			STUN server needs to be set to activate STUN detection mechanism. Usually ITSP will
			provide these settings. If this field is set to “Yes”, then the device will periodically send
			a dummy UDP packet to the SIP server to pinhole the NAT.
Grandstream Networks, Inc.				HT503 User Manual	Page 24 of 38
				Firmware 1.0.4.2	Last Updated: 06/2011