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2.
Please add the following line in the end of chan_dahdi.conf file
#include dahdi-channels.conf
3.
Please run asterisk with the following command:
asterisk
asterisk -vvvgrc
reload
4.
Please run dahdi show channels command
You should see 124 channels
5.
How to check if the hardware echo cancellation works or not
1)
When you plug the EC128 into AX4D, please do not need to press hard, because the pin
is a little longer than the slot.
2)
After booting your server with the AX4D and EC128, please run dmesg command to
check if the hardware is detected by dahdi or not. You can get the following red
information.
VPM450: echo cancellation for 128 channels
wct4xxp 0000:05:04.0: VPM450: hardware DTMF disabled.
wct4xxp 0000:05:04.0: VPM450: Present and operational servicing 4 span(s)
3)
When you are using hardware echocancellation, please disable the software
echocancellation in /etc/dahdi/system.conf, and enable the echocancel=yes line in
/etc/asterisk/chan_dahdi.conf file. After setting, 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 EC128 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
