Inbound calls ok. Outbound calls fail

a) I installed Asterisk based on steps illustrated in this URL: … steriskNOW
b) Then Configured the PBX based on steps listed here:
c) Then configured 3CX softphone based on instructions in this site: … vider.html

    currently,  I can receive calls through 3CX softphone, but when I dial out:
    1) The softphone rings 3 times
    2) Then it beeps busy tone 3 times
    3) 3CX softphone then displays the message 'Server Unreachable'
    4) and then it hangs up

  Which of (a), (b), or (c) is to blame for the outbound call issue?


This is neither an AsteriskNOW, nor a trixbox forum.

Also, it is almost always essential to provide actual diagnostic output (at least verbosity 3) and actual configuration fragments. sip set debug on output is also likely to be needed.

When you say the softphone rings, I assume you really mean you here ringback tone.