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Chapter 5
CLI Commands
cnfecantail
To configure the maximum tail length for digital signal processors (DSPs) on a VISM card that is used
for echo cancellation, use the cnfecantail command in the VoIP switching/trunking, switched AAL2
PVC, and AAL2 trunking operating modes.
Syntax Description
line-num
max-ecan-tail
Command Modes
VoIP switching/trunking, switched AAL2 PVC, and AAL2 trunking
Usage Guidelines
This command applies to DSPs processing data on a specified line.
Examples
The following example shows that line 3 of the current VISM card is configured with a maximum ECAN
tail length of 96 ms:
cnfecantail 3 96
Related Commands
Command
cnfecanenable
cnfecanrec
dsplndsp
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
cnfecantail line-num max-ecan-tail
Line number to configure maximum ECAN tail length; in the range from 1 to 8.
Maximum tail length (defined in milliseconds). It can be one of the following
values:
24
•
32 (Default)
•
48
•
64
•
•
80
•
96
•
112
•
128
Description
Enables or disables ECAN on a specified VISM card line.
Configures the residual echo control for DSPs on a VISM card that is used for
ECAN.
Displays the DSP information for a specified VISM card line.
Cisco VISM Installation and Configuration Guide
cnfecantail
5-147
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