HandyTone-496 User Manual Grandstream Networks, Inc.
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Enable Call
Features Default is No. If set to Yes, Call Forwarding & Do-Not-Disturb are supported
locally
Offhook
Auto-Dial This parameter allows users to configure a User ID or extension number to be
automatically dialed upon offhook. Please note that only the user part of a SIP
address needs to be entered here. The HandyTone ATA will automatically
append the “@” and the host portion of the corresponding SIP address.
Proxy-Require SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
Disable Call
Waiting Default is No.
No Key Entry
Timeout Default is 4 seconds.
Preferred Vocoder The HandyTone ATA supports up to 6 different Vocoder types including G.711
A-/U-law，G.723.1, G.726, G.729A/B, iLBC. Depending on the product
model, some of these Vocoders may not be provided in standard release.
Users can configure Vocoders in a preference list that will be included with the
same preference order in SDP message. The first Vocoder in this list can be
entered by choosing the appropriate option in “Choice 1”. Similarly, the last
Vocoder in this list can be entered by choosing the appropriate option in
“Choice 6”.
G723 Rate: This defines the encoding rate for G723 vocoder. By default, 6.3kbps rate is
chosen.
iLBC frame size: This sets the iLBC frame size in 20ms or 30ms
iLBC payload type: This defines payload time 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 and G729. 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.
Early Dial This parameter controls whether the phone will attempt to 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 most likely be rejected by the proxy (with a 404 Not Found error).
Please note that this feature is NOT designed to work with and should NOT be
enabled for direct IP-to-IP calling.