ITA-200 Technical Reference Manual Rev 1.0
___________________________________________________________________
_____________________________________________________________________________________
Copyright © 2004-2006 Quintum Technologies, Inc. All Rights Reserved
21 of 58
Codec
Audio Codec
G.723.1
G.723.1A
G.729A
G.729AB
G.711 (u and A)
Speed
6.4 Kbps
6.4 Kbps
8 Kbps
8 Kbps
64 Kbps
Performance
FAX Codec
T.38
T.38 is an ITU standard for
sending FAX across IP
networks in real-time mode.
FAX messages are sent as
UDP or TCP/IP packets.
VBD
This is a method which takes data
modem traffic and transports it over
IP networks using voice band codec
such as G.711 and G.726. It
provides a fairly simple approach to
moving data traffic over IP and
enables the handling of a variety of
legacy V-series modem traffic. This
method tends to be bandwidth
intensive, but does not require a
gateway to demodulate the modem
data in order to transport it. The
basic concept is consistent with the
methods that various vendors have
used on a private (i.e. non-
standard) basis.
Media Port
The port used to send and receive RTP traffic for voice call.
Default values are from 27000 to 27008.
Voice Frame/ IP
Packet
Specifies the number of voice frames to be transmitted in a single
packet. The range of values is from 1 to 8. Default value 1.
Handset Volume
(Speaker)
Specifies the volume of the speaker. Default is 0 dB.
Range -12 to +12 dB.
Handset Volume (Mic)
Specifies the volume of the microphone. Default is 0 dB.
Range -12 to +12 dB.
