Asterisk installed on Linux server by other admin.

I am trying to find out which communication protocol/technology is currently using on Asterisk? Eg: isdn, voip, acd, etc. I dont know which one is using.

The line connected on BT with ISDN or T1 Card on the server.

There are a lot of files in /etc/asterisk/

Which config file do I need to look at and detail that connect to BT line?

  • 2
    If the files in /etc/asterisk/ are blurry you should fix your monitor. ;-)
    – ceejayoz
    Nov 29, 2011 at 20:17
  • 6
    Maybe, you need to start reading asterisk documentation.
    – Khaled
    Nov 29, 2011 at 20:23

1 Answer 1


Asterisk is primarily a VoIP server using SIP, RTSP, and IAX2. it does 'speak' other protocols as well.

T1 is a type of ISDN also; though ISDN PRI lines are usually voice and T1 is data, it's the same technology.

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