AudioCodes MP-20 Series User Manual

User's Manual 92 Document #: LTRT-50614
MP-20x Multimedia Home Gateway
Parameter Description
Minimum Delay
min_delay
Defines the initial and minimal delay of the adaptive jitter buffer
mechanism, which compensates for network problems. The value
should be set according to the expected average jitter in the
network (in milliseconds). The default is 35 msec.
Optimization Factor
optimization_factor
Defines the adaptation rate of the jitter buffer mechanism. Higher
values cause the jitter buffer to respond faster to increased
network jitter. The default is 7.
Silence Compression
Enable Silence Compression
silence_compression_enable
Enables silence compression, which reduces the network
bandwidth consumption. The default is disabled.
Enable G.711/G.726 Comfort
Noise
g711_g726_comfort_noise_enable
Enables the Comfort Noise generation feature. When enabled
and silence is detected, the device transmits a series of
parameters called Silence Information Descriptor (SID), which are
used to reproduce the local background noise at the remote
(receiving) side.
Note: This parameter appears only if the ‘Enable Silence
Compression’ check box is selected.
Echo Cancellation
Enable Echo Cancellation
echo_cancellation/enabled
Enables (default) echo cancellation (disabling echo cancellation
should be done for testing purposes only).
Fax and Modem Settings
Fax Transport Mode
fax_transport_mode
Selects the way fax calls are handled:

Transparent = Fax is transferred in-band (like a voice call)
- can be used if the codec is G.711

T.38 Relay = Fax is relayed to the remote side according
to the T.38 standard

Voice Band Data = Switch to G.711 via SIP messaging

Bypass = An automatic switch to AudioCodes' proprietary
payload type (102, 103).
Max Rate
max_rate
Defines the maximum fax rate.
2.4 Kbps, 4.8 Kbps, 7.2 Kbps, 9.6 Kbps, 12 Kbps or 14.4 Kbps
(default).
Note: This parameter appears only if 'Fax Transport Mode' is set
to ‘T.38 Relay’.
Max Buffer
max_buffer
Defines the maximum amount of T.38 data stored on the devices
.
The valid range is 128 to 2048. The default is 1024.
Note: This parameter appears only if 'Fax Transport Mode' is set
to ‘T.38 Relay’.
Max Datagram
max_datagram
Defines the maximum total size of TCP/UDPTL packets that can
be received at the remote gateway. The valid range is 160 to
1020. The default is 320.
Note: This parameter appears only if 'Fax Transport Mode' is set
to ‘T.38 Relay’.

AudioCodes MP-20 Series Specifications

General

Brand	AudioCodes
Model	MP-20 Series
Category	Adapter
Language	English