OpenVox D210P User Manual page 22

If dahdi channels are found, it means they have been loaded into Asterisk.
You are going to edit dialplan by your requirements.
4. Dialplan edit
Users must make sure that the context "from-pstn" and "from-internal"
are in extensions.conf, here a simple example is given:
# vim /etc/asterisk/extensions.conf
[from-pstn]
exten => s,1,Answer()
exten => s,n,Playback(cc_welcome)
exten => s,n,Hangup()
[from-internal]
exten => _X.,1,Dial(dahdi/g0/${EXTEN})
exten => _X.,n,Hangup
Additional function
Users should run command "cat /proc/interrupts" to check
D210P/DE210P has independent interrupt. If it shares interrupt with other
device, it may cause some problems even cannot work normally. Or you
can see if the EC module is working as follows:
[root@localhost ~]# dmesg | grep VPM
VPM450: echo cancellation for 64 channels
wct4xxp 0000:01:03.0: VPM450: hardware DTMF disabled.
wct4xxp 0000:01:03.0: VPM450: Present and operational
servicing 2 span(s)
OpenVox Communication Co. LTD.
D210P/DE210P on DAHDI User Manual
Figure 8 dial plan
Figure 9 EC module show
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