User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform Chapter 3
E1 Voice Configuration
3-7
Table VC-3-4 Configuration Commands of E1 Voice Port
Operation Command
Enter voice port configuration mode voice-port port-nunmber :ds0-group-number
Enable comfort noise setting comfort-noise
Disable comfort noise setting no comfort-noise
Establish PLAR mode connection for voice port connection plar telephone-number
Delete the PLAR connection of the voice port no connection plar
Configure the description information of the port description string
Delete the description information of the port no descriptio n
Enable echo cancellation function or set the time
coverage of echo cancellation sampling echo-cancel { enable | coverage coverage-time }
Cancel echo cancellation function or recover the default
value of the time coverage of echo cancellation sampling no echo-cancel { enable | coverage }
Set voice input gain input gain value
Recover the default value of voice input gain no input gain
Set echo cancellation to use non-linear processing
procedure non-linear
Cancel echo cancellation’s use of non-linear processing
procedure no non-linear
Configure voice output attenuation output attenuation value
Recover the default value of voice output attenuation no output attenuation
Disable the voice port shutdown
Enable the voice port no shutdown
By default, comfort-noise (i.e. enable comfort-noise setting) command becomes
effective and no connection plar (i.e. the system has not established PLAR mode
connection initially) command becomes effective, and non-linear (i.e. enable non-
linear processing procedure) becomes effective.
The default value of configuration command echo-cancel (enable echo cancellation) is
enable. The default value of command echo-cancel coverage (time coverage of echo
cancellation sampling) is 16ms. The default value of configuration command input
gain (voice input gain) is 0. The default value of configuration command output
attenuation (voice output attenuation) is 0.
3.2.6 Configuring E1 Voice R2 Signaling

I. Configuring DS0 group

DS0 is the logical voice port abstracted from the actual E1 port by defining the time slot
list, and it serves voice transmission. The time slots included in the DS0 group are a ll
used to transmit voice, while the other time slots not included still can serve dat a
information transmission. Only one DS0 can be defined on one E1 port. The R2
signaling configuration for E1 line is facilitated by configuring signaling t ype and the
relevant parameters of R2 signaling for each DS0. When DS0 group is successf ully
configured, the system will create the voice port correspond ing to the DS0 according to
the current E1 port number and DS0 group number. The voice port number is “E1 por t
number: DS0 group number”.
For the commands in the table below, please use controller e1 in global configuratio n
mode and the others in E1 controller interface configuration mode.