R0106-HP MSR Router Series Voice Configuration Guide(V7)

142
Adjusting the transmit energy level
Perform this task if you cannot establish fax calls when all other settings are correct.
To adjust the transmit energy level:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Enter dial program view.
dial-program N/A
4. Enter voice entity view.
entity entity-number { pots | voip } N/A
5. Adjust the transmit energy level.
fax level level The default value is –15 dBm.
Configuring fax pass-through
Fax pass-through allows fax traffic to be transmitted in RTP packets without being compressed, and it
supports G.711alaw and G711ulaw codecs. During fax pass-through, the device automatically disables
VAD. Fax pass-through features low delay but is susceptible to packet loss and jitter.
To configure fax pass-through:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Enter dial program view.
dial-program N/A
4. Enter voice entity view.
entity entity-number { pots |
voip }
N/A
5. Enable fax pass-through.
fax protocol pass-through
{ g711alaw | g711ulaw }
By default, the standard T.38 protocol
is used.
You only need to configure this
command on the calling device, and
the called device automatically
matches the configured protocol.
Configuring modem pass-through
Modem pass-through allows modem signals to be transmitted in RTP packets without being compressed,
and it supports G.711alaw and G711ulaw codecs. During modem pass-through, the device
automatically disables VAD.
To configure modem pass-through:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A