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Grandstream Networks, Inc. HT-502 User Manual Page 25 of 32
Firmware 1.0.0.77 Last Updated: 1/2008
corresponding SIP address.
Proxy-Require
SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
Use NAT IP
NAT IP address used in SIP/SDP message. Default is blank.
Distinctive Ring Tone
Custom Ring Tone 1 to 3 with associate Caller ID: when selected, if Caller ID is
configured, then the device will ONLY uses this ring tone when the incoming call is
from the Caller ID. System Ring Tone is used for all other calls. When selected but no
Caller ID is configured, the selected ring tone will be used for all incoming calls.
Distinctive ring tones can be configured not only for matching a whole number, but also
for matching prefixes. In this case symbol * (star) will be used.
For example:
if configured as *617, Ring Tone 1 will be used in case of call arrived from
Massachusetts. Any other incoming call will ring using cadence defined in parameter
System Ring Cadence located under Advanced Settings Configuration page.
Disable Call Waiting
Default is No. If set to YES Call Waiting indication information will not be provided to
analog phone connected to this FXS port.
Disable Call Waiting
Tone
Default is No. This is to disable the stutter Call Waiting Tone when a Call Waiting
information arrives. The CWCID information will still be displayed.
Disable Visual MWI If set to “YES”, the MWI information will not be transferred to the analog phone
connected to the FXS port.
Ring Timeout
Incoming call will stop ringing when not picked up given a specific period of time.
Delayed Call Forward
Wait Time
Default value is 20 seconds. In case this feature activated using * codes (*92 code), the
call will be forwarded after this preconfigured amount of time.
No Key Entry Timeout Default is 4 seconds. Dialing process is completed and outgoing call is initiated if no
key entry occurs during this preconfigured interval.
Early Dial Default is No. Use only if proxy supports 484 response. This parameter controls
whether the phone will send an early INVITE each time a key is pressed when a user
dials a number. If set to “Yes”, an INVITE is sent using the dial-number collected thus
far; Otherwise, no INVITE is sent until the “(Re-)Dial” button is pressed or after about 5
seconds have elapsed if the user forgets to press the “Re-Dial” button.
The “Yes” option should be used ONLY if there is a SIP proxy configured and the proxy
server supports 484 Incomplete Address response. Otherwise, the call will likely be
rejected by the proxy (with a 404 Not Found error).
This feature does NOT work with and should NOT be enabled for direct IP-to-IP calling.
Dial Plan Prefix
Sets the prefix added to each dialed number.
Use # as Dial Key
Allows users to configure the “#” key as the “Send” (or “Dial”) key. If set to “Yes”, “#”
will send the number. In this case, this key is essentially equivalent to the “Dial” key. If
set to “No”, this “#” key can be included as part of number.
Dial Plan Dial Plan Rules:
1. Accept Digits: 1,2,3,4,5,6,7,8,9,0 , *, #, A,a,B,b,C,c,D,d
2. Grammar: x - any digit from 0-9;
a. xx+ - at least 2 digits number;
b. xx. – at least 2 digits number;
c. ^ - exclude;
d. [3-5] - any digit of 3, 4, or 5;
e. [147] - any digit 1, 4, or 7;
f. <2=011> - replace digit 2 with 011 when dialing
• Example 1: {[369]11 | 1617xxxxxxx} – Allow 311, 611, 911, and any 10 digit
numbers of leading digits 1617
• Example 2: {^1900x+ | <=1617>xxxxxxx} – Block any number of leading digits
1900 and add prefix 1617 for any dialed 7 digit numbers
• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+} – Allow any length of number with
leading digit 2 and 10 digit-numbers of leading digit 1 and leading exchange
number between 2 and 9; if leading digit is 2, replace leading digit 2 with 011