TELES VoIP Box BRI Series, Reference Manual

Page: 101 / 226

5 Additional VoIP parameters
VoIPBox DSL / VoIPBox BRI – version 21.0.009 Page 101
5.5 Quality parameters
Table 5.7 Customized parameters: VoIP quality (page 1 of 5)
VoIP Quality Parameters
SigTos=<num>
Enter a value between 0 and 255 (default is 0) to set the TOS (type of service) field in
the SIP/SIPS packet IP header. Possible values are described in Table 5.8
→
. If your IP
network uses differentiated services, you can also define the DSCP (differentiated ser-
vices codepoint) for the SIP/SIPS packets. The DSCP is the first six bits in the TOS octet.
NOTE: SigTos is set in the [System] section of the pabx.cfg file.
VoipAGC=<x y z>
This parameter allows automatic gain control of input signals from PSTN or IP. En-
abling this feature compensates for near-far gain differences:
x
- direction (
0
for signals from TDM,
1
for signals from IP)
y
- gain slope (controls gain changing ratio in -dBm/sec, values 0 to 31, default 0)
z
- target energy (determines attempted signal energy value in -dBm, values 0 to 63,
default 19
Gain Slope:
0 - 00.25dB1 - 00.50dB2 - 00.75dB
3 - 01.00dB4 - 01.25dB5 - 01.50dB
6 - 01.75dB7 - 02.00dB8 - 02.50dB
9 - 03.00dB10 - 03.50dB11 - 04.00dB
12 - 04.50dB13 - 05.00dB14 - 05.50dB
15 - 06.00dB16 - 07.00dB17 - 08.00dB
18 - 09.00dB19 - 10.00dB20 - 11.00dB
21 - 12.00dB22 - 13.00dB23 - 14.00dB
24 - 15.00dB25 - 20.00dB26 - 25.00dB
27 - 30.00dB28 - 35.00dB29 - 40.00dB
30 - 50.00dB31 - 70.00dB
VoipAutoRtpAddr=<mode>
Some application scenarios require automatic RTP IP address and port detection for
VoIP calls, for example if a firewall or NAT changes the IP address of incoming RTP da-
ta. Enter Yes to activate automatic detection. When No is set, RTP packets sources oth-
er than those processed are rejected. Default No.
VoipBandwidthRestriction=<mode>
Enter Yes to include the VoIP profile in traffic shaping. Default is No. For a description
of the functionality, please refer to VoipMaximumBandwidth below.