OpenVox AE810P User Manual page 26

You should write the destination number instead of the
outgoing_number in the above dial plan. The dial plan
achieves that when an extension telephone dials 200,
Asterisk will transfer through channel 7to the destination.
While a call comes from PSTN line, Asterisk answers firstly, and then
gets through to the extension set which connects to channel 1.
After saving your dialplan, please run "asterisk –r", then execute
"reload" in the CLI. Next you are able to make calls.
Additional function
Users should run command "cat /proc/interrupts" to check
A810P/AE810Phas independent interrupt. If A810P/AE810P shares
interrupt with other devices, it may cause some problems even cannot
work normally. While A810P/AE810P allows users to modify interrupt
pin during firmware upgrade for avoiding interrupt conflict.
OpenVox Communication Co. LTD.
A810P/AE810P on DAHDI User Manual
URL: www.openvox.cn
25