In Asterisk, we have:
exten => 9,1,Dial(DAHDI/1,5)
This is to generate a ring on the device attached to the Dahdi channel 1 for five seconds. The dial ring voltage will be used for some electrical circuit implementation.
1. How to control the length of the ring? In other words: I want 5 seconds of static rinnnnnnnnng, not ring ring.....ring ring.
2. Is there any way in DAHDI to control ring voltage? (Make it 18 volts instead of 40 volts)