R2511-HP MSR Router Series Voice Configuration Guide(V5)

50
Configuring options related to dial plan
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice subscriber line
view.
subscriber-line line-number N/A
3. Enable the private line auto
ring function.
private-line string
Optional.
Disabled by default.
4. Bind a calling/called number
substitution rule list to a voice
subscriber line.
substitute { called | calling }
list-number
By default, no number substitution
rule list is bound to a voice
subscriber line.
For more information about the operation of the above commands, see "Configuring dial plans."
Configuring adjustment functions
Configuration task list
Task Remarks
Configuring echo cancellation Optional.
Configuring gain adjustment function Optional.
Configuring time adjustment function Optional.
Configuring comfortable noise function Optional.
Configuring echo cancellation
Echo cancellation
An echo is the audible leak-through of your own voice into your own receive path. When the voice of a
user leaks into the receive path of the user, it is an echo. To cancel echoes, adjust the echo cancellation
function in the VoIP gateway as follows:
1. Adjust echo duration
Table 2 Adjust echo duration
S
y
m
p
tom Reason Ad
j
ustment method
A user hears a delayed
copy of the original
voice of the user.
The echo duration is so long that the
convergence time of echo cancellation on the
network becomes longer.
Shorten echo duration
The echo duration is so short that long-duration
echoes are not completely cancelled.
Prolong echo duration
2. Adjust echo cancellation parameters