Channel Parameters - 3Com V7111 - VCX 4 Channels Analog FXO Media Gateway User Manual

Channel Parameters

In Table 18, parameters that are shown in brackets refer to the format in the
Embedded Web Server
Channel Parameters
Table 18
INI File Field Name
*
GUI Parameter Name
DJBufMinDelay
(Dynamic Jitter Buffer Minimum Delay)
DJBufOptFactor
(Dynamic Jitter Buffer Optimization Factor)
BaseUDPPort
(RTP Base UDP Port)
ECHybridLoss
FaxModemBypassM
(Fax Modem Bypass Packing Factor)
FaxModemRelayVolume
FaxRelayECMEnable
(Fax Relay ECM Enabled)
3Com VCX V7111 VoIP SIP Gateways User Manual
*
.
Valid Range and Description
0 – 150 ms (default = 70)
Dynamic Jitter Buffer Minimum Delay (described in the
3Com VoIPLib Reference Library User Manual).
0 – 12 (default = 7)
Dynamic jitter buffer frame error/delay optimization.
Range 6000 –64000 (default 6000)
Lower boundary of UDP ports to be used by the Gateway
for RTP, RTCP and T.38 channels.
The upper boundary is the BaseUDPPort + 10*(number of
Gateway's channels). For details see
BootP/TFTP Configuration
0 = 6 dB (default)
1 = 9 dB
2 = 0 dB
3 = 3 dB
Sets the four wire to two wire worst case hybrid loss, the
ratio between the signal level sent to the hybrid and the
echo level returning from the hybrid.
Number of 20 ms payloads to be used for generating one
RTP fax/modem bypass packet. (Range 1–2, default = 1)
-18 to -3, corresponding to -18 dBm to -3 dBm in 1 dB
steps. (Default = -12 dBm) Fax gain control.
0 = Disable using ECM mode during Fax Relay
1 = Enable using ECM mode during Fax Relay. (default)
"Appendix A:
Utility" on page 137.
71