Biamp A4 - Manual (Page 117)

Component Objects
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Dialing Timeout - This is the amount of time (in seconds) the card will wait after the last dialed
digit before sending the call for off hook dialing (default is 3). Dialing the # character will bypass
efault is Classical) and is
e.
by the
will send digit presses as a single packet of data to the far end. If this is
cifies the
nables the Redial function for the currently selected line, and is
t
en it requests a Hold (default is off). Its use will depend on VoIP Proxy
- This setting controls whether Voice Activity Detection (VAD)
"keep-alive" packets will be transmitted. Not
f
rd
ther endpoint at the start of each call. The codec can
.
the timeout setting and send the call immediately. This setting is adjustable per line.
Ring Type - This sets the audible ring style for incoming calls (d
adjustable per line.
DTMF On/Off Time - These settings control the duration (in milliseconds) of DTMF tones and the
pause time between subsequent tones (default is 50). This setting is adjustable per lin
Enable Out-of-Band DTMF (RFC 2833 Control) - If this setting is enabled and supported
far end, the VoIP card
disabled (default) the DTMF tone will be generated and transmitted as audio. It is advantageous
to use this feature because the far end does not need to decode the DTMF tone from
compressed audio. If the far end does not support this feature, it will be discovered during call
connection and the VoIP Card will automatically revert back to sending DTMF in-band. This
setting is adjustable per line.
Auto Answer Ring Count - If Auto Answer is enabled on the dial pad, this setting spe
number of rings before the VoIP card answers the call (0 - 5 rings, default is 3). This setting is
adjustable per line.
Enable Redial - This setting e
adjustable per line (default is on).
RFC2543-Style Hold - When this setting is enabled, the VoIP card will modify the message sen
to the VoIP Proxy wh
Server support. This setting is adjustable per line.
Enable VAD and VAD Threshold
is used on the line. If enabled, the VoIP card will stop transmitting audio packets to the far end to
save network bandwidth when the input to the VoIP Card Transmit drops below the threshold
defined in the VAD Threshold parameter. Periodic
all proxies and end-points support VAD and may drop the call or otherwise misbehave if it is
used. This setting is adjustable per line.
Voice Codec Priorities - When initiating or receiving a call the VoIP card will present this list o
supported codecs to the proxy server. Codecs are listed in order of priority, from top to bottom,
and may be reordered by using the Up and Down buttons. Using this priority list, the VoIP ca
will negotiate a choice of codec with the o
be selected and deselected using the check boxes. If a codec is deselected, it will not be used
when negotiating the call. This setting is adjustable per line.
Min / Max Jitter Buffer - Each codec has a minimum and maximum jitter buffer (in milliseconds)
Increasing the buffer sizes may improve call quality at the expense of additional delay.
Decreasing the buffer sizes may improve delay at the expense of call quality. These settings are
adjustable per codec, per line.