iLBC frame size:
This sets the iLBC size in 20ms or 30ms
iLBC payload type:
This defines payload type for iLBC. Default value is 97. The valid range is between 96
and 127.
Silence Suppression
This controls the silence suppression/VAD feature of G723. If set to “Yes”, when a
silence is detected, small quantity of VAD packets (instead of audio packets) will be
sent during the period of no talking. If set to “No”, this feature is disabled.
Fax Mode
T.38 (Auto Detect) FoIP by default, or fax Pass-Through.
Early Dial
Default is No. Use only if proxy supports 484 response
Dial Plan Prefix
Sets the prefix added to each dialed number
Use # as
Send Key
This parameter allows users to configure the “#” key to be used as the “Send” (or
“Dial”) key. If set to “Yes”, pressing this key will immediately trigger the sending of
dialed string collected so far. If set to “No”, this “#” key will then be included as part of
the dial string to be sent out.
Subscribe for MWI:
Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting Indication will be
sent periodically.
Send Anonymous
If this parameter is set to “Yes”, user ID will be sent as anonymous, essentially blocking
the Caller ID from displaying.
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. Default is NO. If set to YES, the “Refer-To” header
uses the transferred target’s “Contact” header information.
Special Features
Default is Standard. Choose the selection to meet some special requirements from Soft
Switch vendors like Nortel, Broadsoft, etc.
Onhook Threshold
Default setting is 800ms. If the flash event is longer than the settings, it is processed as
on-hook event.
FXS Impedance
Selects the impedance of the analog telephone connected to the Phone port.
Caller ID Scheme
Select the Caller ID Scheme to suit the standard of different area.
• Bellcore (North America)
• CID - Canada
• DTMF (Brazil)
• DTMF (Sweden)
• DTMF (Denmark)
• ETSI-DTMF (Finland, Sweden)
• ETSI-FSK (France, Germany, Norway, Taiwan, UK-CCA)
Onhook Voltage
Select the onhook voltage to suit the analog phone.
Polarity Reversal
Select Polarity Reversal to adapt some call charge/billing system. Default is No.
Volume Amplification
Handset volume adjustment. 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.
T
ABLE
11:
HT488
FXO
PORT
S
ETTINGS
P
AGES
D
EFINITIONS
Local SIP port
The default value for FXO port is 5062.
Local RTP port
The default value for FXO port is 5008.
PSTN AC Termination
Selects the impedance of the analog PSTN line connected to the Line port.
PSTN Disconnect Tone
This configuration should be configured by the VoIP service provider. Some country
use single frequency tone to signal PSTN disconnection, some country use double
frequency tone.
PSTN Disconnect Tone
Cadence
This setting can be configured to suit the telephone company’s standard in different
country.
PSTN Silence Timeout
Terminate call after long silence detected. Default setting is 60 sec, max 65536
Note:
General settings have same meaning as explained in above for FXS port page. Here are described
only a parameters related to FXO port.
Grandstream Networks, Inc.
HT488 User Manual
Page
24 of 33
Firmware 1.0.3.64
Last Updated: 4/2007
