User Manual
U-SYS IAD108 Integrated Access Device
Chapter 5 Advanced
Configuration
5-19
value
: Value of the system software parameter.
Name:
the name of the system parameter, ranging 0–27. Each
digit represents a specific parameter, as listed in Table 5-11.
Table 5-11
Values of parameter name and their meanings
Item Description
0
Maximum number of subscribers that can be powered by remote power
supply.
1
The lower limit for pressing hookflash, being 100 ms in both mainland
China and Hong Kong. The default value is 100 ms.
2
The upper limit for pressing hookflash, being 300 ms in mainland China
and 700 ms in Hong Kong. The default value is 300 ms.
3
The input gain of the DSP chip (IP->PCM). It ranges 2–64, corresponding
to -31dB–0dB
4
The output gain of the DSP chip. It ranges 2–64, corresponding to
-31dB–0dB.
5
The value of jitter buffer. This value ranges 0 ms – 150 ms and the default
value is 60 ms.
6
This parameter is reserved for future use.
7
The default coding mode of the DSP channel, ranging 0–20. The value of 0
indicates G.711µ; 4 G.723High; 8 G.711A; 18 G.729; 20 G.723Low. The
default value is 8 (G.711A).
8
The default EC switch of the DSP channel, ranging 0–1. The value of 0
indicates the switch is off; 1 on.
9
The default silence compression switch of the DSP channel. The value of
0 indicates the switch is off; 1 on.
10
The default interval for RTP packetization of the DSP channel, in unit of
milliseconds. The value can be 10 ms, 20 ms, and 30 ms. The default
value is 20 ms.
