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Grandstream Networks, Inc. HT–496 User Manual Page 25 of 33
Firmware 1.0.3.64 Last Updated: 1/2007
• for G.729/G.728, 64 (x10ms) and 64 (x2.5ms) frames respectively.
G723 Rate:
Default is 6.3kbps rate. Defines the encoding rate for G723 vocoder.
iLBC frame size:
Sets the iLBC frame size in 20ms or 30ms
iLBC payload type:
Defines payload time for iLBC. Default value is 97. Valid range: 96 - 127.
Silence Suppression
This controls the silence suppression/VAD feature of G.723. If set to “Yes”, a
small quantity of VAD packets (instead of audio packets) will be sent during
the period of silence. If set to “No”, feature is disabled.
Fax Mode
T.38 (Auto Detect) FoIP (fax over IP) by default, or Pass-Through (must use
codec PCMU/PCMA)
Early Dial
This parameter controls whether the early INVITE each time a key is pressed.
If set to “Yes”, an INVITE is sent for each dialed number. If set to NO, INVITE
is sent after the “(Re-)Dial” button is pressed or after 5 seconds have elapsed.
The “Yes” option should be used ONLY if there is a SIP proxy configured and
the proxy server supports 484 Incomplete Address responses, otherwise the
call is rejected.
Direct IP-to-IP calling does NOT work with feature. It should not be enabled
for direct IP-to-IP calling.
Allow incoming SIP
messages from SIP
proxy only
Default is set to “No”.
Allow outgoing call
without Registration
Default is set to “No”.
Dial Plan Prefix
Sets the prefix added to each dialed number
Use # as Dial Key
If set to “Yes”, the “#” key as the “Send” (or “Dial”) key. If set to “No”, “#” key is
part of the dial string.
Subscribe for MWI:
Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting
Indication will be sent periodically.
Send Anonymous
Blocks Caller ID display if set to “Yes”.
Lock keypad update
If this parameter is set to “Yes”, the configuration update via keypad is
disabled.
Refer-To Uses Target
Contact
Used for Attended transfer Feature. The “Refer-To” header uses the
transferred target’s “Contact” header information.
Special Feature Default is Standard. Choose this selection to meet special requirements from
Soft Switch vendors.
Volume Amplification
Adjusts handset volume. RX is for receiving volume, TX is for transmission
volume. Default values are 0dB for both parameters. +6dB generates the
highest volume and -6dB generates the lowest volume.
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