One of the most affordable ways to test Asterisk is to use a X100P card. This card is actually an old V.90 modem. Some manufacturers still sell the card even after Digium had discontinued it. Recently, we were having a lot of problems in new motherboards. The symptom was very easy to detect, when trying to run the utility dahdi_test the result was simply0%. Another common issue was the message below:
[Jun 24 09:52:23] ERROR[3064] asterisk.c: Asterisk has detected a problem with your DAHDI configuration and will shutdown for your protection. You have options:
1. You only have to compile DAHDI support into Asterisk if you need it. One option is to recompile without DAHDI support.
2. You only have to load DAHDI drivers if you want to take advantage of DAHDI services. One option is to unload DAHDI modules if you don't need them
3. If you need Zaptel services, you must correctly configure DAHDI.
