Asterisk cmd Hangup




This application hangs up the calling channel unconditionally and returns -1. If a causecode is given the channel's hangup cause is set to the given value.

For SIP Connections

It is possible to send different reply errors ("404 Not found", "484 Address incomplete" etc.) by setting <causecode> to one of the values defined by RFC 3398 - page 24.

The <causecode> parameter is the ISDN causecode and not the SIP response code. For example, to hang up a call with the SIP cause 503, the dialplan must execute hangup(42).

When call is hang up, Asterisk sends the extra SIP header "X-Asterisk-HangupCauseCode" in in the BYE message.

For PRI Connections: Setting a PRI_CAUSE

  • Available on CVS versions March, 2004
On Zap PRI channels it is possible to set the PRI_CAUSE variable prior to Hangup(). This sends a PRI DISCONNECT message with the set CAUSE element to the switch. Some commonly used cause codes:

1 = Unallocated number
16 = Normal call clearing
17 = User busy
18 = No user responding (telephone device not connected)
21 = Call rejected
22 = Number changed
27 = Destignation out of order
38 = Network out of order
41 = Temporary failure

In Canada, through Group Telecom (May work through others) The hangup with PRI_CAUSE delivers these messages.

PRI_CAUSE = 0,22,28,65-66 We're sorry your call cannot be completed as dialed, please contact the group telecom customer service center at 1-877-484-5101 if you require assistance.

PRI_CAUSE = 2-16,19-20,23-27,29-40,43-53,55-64,67-100 Fast Busy Signal / Congestions

PRI_CAUSE = 17,41 Slow Busy Signal (Normal busy signal you hear every day)

PRI_CAUSE = 18,21 Ringing (Normal ringing you hear every day)

PRI_CAUSE = 42,54 We're sorry, all circuits are busy, please try your call again later.


exten => i,1,SetVar(PRI_CAUSE=1); only needed for older Asterisk versions
; invalid extension dialed - PRI_CAUSE=unallocated number
exten => i,2,Hangup ; Outdated: Asterisk 1.4 allows to transmit the cause code as argument to Hangup()
; send the DISCONNECT message
; This results in most cases in a network generated recording like
"The number you have dialed has been disconnected ..."

See also

Asterisk | Applications | Functions | Variables | Expressions | Asterisk FAQ

Created by: oej, Last modification: Fri 17 of Jun, 2011 (18:16) by khb
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