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.
Here is an example for the configuration of the dial tone for North America:
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)
Lock Keypad Update If set to “Yes”, the configuration update via keypad is disabled.
Disable Voice Prompt Disables the voice prompt configuration. Default is “No.”
Disable Direct IP Calling Disables the Direct IP Call function. Default is “No.”
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
Configuration This is a special feature that enables the user to create a text file backup of your
existing configuration.
TABLE 10: HT503 FXS PORT SETTINGS PAGES DEFINITIONS Account Active When set to yes the FXS port is activated.
SIP Server This field conta ins 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
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.
SIP User ID User account information, provided by VoIP service provider (ITSP), usually has the
form of digit similar to phone number or actually a phone number. This field contains
the user part of the SIP address for this phone. e.g., if the SIP address is
sip:my_user_id@my_provider.com, then the SIP User ID is: my_user_id.
Do NOT include the preceding “sip:” scheme or the host portion of the SIP address in
this field.
Grandstream Networks, Inc. HT503 User Manual Page 23 of 35
Firmware 1.0.0.6 Last Updated: 6/2007