AXE2D User Manual
www.atcom.cn
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11
4. Check the dahdi channels messages
Please run the command “dahdi show channels”. Users will get 64 channels messages in E1
mode. And users will get 48 channels messages in T1/J1 mode.
5. Check echo cancellation hardware state
1)
When users plug the EC64 into the card, please do not need to press hard, because the
pin is a little longer than the slot.
2)
After booting the server with the card and EC128, please run dmesg command to check
if the hardware is detected by dahdi or not. Users can get the following red information.
VPM450: echo cancellation for 64 channels
wct2xxp 0000:05:04.0: VPM450: hardware DTMF disabled.
wct2xxp 0000:05:04.0: VPM450: Present and operational servicing 2 span(s)
3)
When users are using hardware echo cancellation, please disable the software echo
cancellation in /etc/dahdi/system.conf, and enable the echocancel=yes line in
/etc/asterisk/chan_dahdi.conf file. After that, please restart dahdi and asterisk.
4)
Run asterisk, and make a call by channel 1, you can get the following information
marked with red line, if the EC64 is working.
Notice: If you enable the software echocancellation, you can also get the following red
lines, so please disable the software echocancellation when you use EC128.
localhost*CLI> dahdi show channel 1
Channel: 1
File Descriptor: 17
Span: 1
Extension: 300
Dialing: no
Context: from-pstn
Caller ID: 900
Calling TON: 33
Caller ID name: 900
Mailbox: none
Destroy: 0
InAlarm: 0
Signalling Type: ISDN PRI
Radio: 0
Owner: DAHDI/1-1
Real: DAHDI/1-1
Callwait: <None>
Threeway: <None>
Confno: -1
Propagated Conference: -1
Real in conference: 0
