[asterisk-users] Answered time on channel

[Dovid Bender]

It seems that what ever I set in my answer handler does not show up in the
hangup handler. In order to do billing I can't rely on the g option where
the caller hangs up the call. Looks like I can either use h or a hangup
handler along with the shared function.



On Tue, Dec 26, 2017 at 4:40 PM, Eric Wieling <ewieling at nyigc.com> wrote:

> Don't use an 'h' extension, use a hangup handler.
> Use the MASTER_CHANNEL() function to set variables to ensure they are
> always set in the "top most" channel.  Below is an untested example, but is
> inspired by dialplan code I use in production.  Maybe it will help.
>
> [outbound] ; this is called on the incoming (caller) channel
> exten => _X.,1,Noop
>  same => n,Set(MASTER_CHANNEL(start_timestamp)=${STRFTIME(,,%s.%3q)})
>  same => n,Set(CHANNEL(hangup_handler_push)=hangup_handler,s,1)
>  same => n,Set(MASTER_CHANNEL(callid_ingress)=${SIPCALLID})
>  same => n, *** unrelated dialplan, AGIs, etc. ***
>  same => n,Dial(SIP/${EXTEN}@1.1.1.1,,U(answer_handler)b(pre_dial_
> handler^s^1)g
>  same => n, *** dialplan for the caller when the callee hangs up first,
> not run when caller hangs up first.  use it to try dialing another
> destination, play intercept to caller, etc. ***
>
>
> [pre_dial_handler] ; this is called on the outgoing (callee) channel
> exten => s,1,Noop
>  same => n,Set(MASTER_CHANNEL(callid_egress)=${SIPCALLID})
>  same => n,Set(MASTER_CHANNEL(dial_timestamp)=${STRFTIME(,,%s.%3q)})
>  same => n,Return
>
>
> [answer_handler] ; run on outgoing (callee) channel, but sets
> answer_timestamp in the caller channel
> exten => s,1,Noop
>  same => n,Set(MASTER_CHANNEL(answer_timestamp)=${STRFTIME(,,%s.%3q)})
>  same => n,Return
>
>
> [hangup_handler]  ; run on incoming (caller) channel, use to do final post
> call cleanup
> exten => s,1,Noop
>   same => n,Set(MASTER_CHANNEL(hangup_timestamp)=${STRFTIME(,,%s.%3q)})
>   same => n, ***post call cleanup AGIs, dialplan, etc. ***
>   same => n,Return
>
>
>
> On 12/26/2017 03:28 PM, Dovid Bender wrote:
>
> Hi,
>
> I have a dial plan where I need to notify an external system when a call
> was answered and when the call hung up. In both requests the start time
> needs to be the same. My Dialplan looks something like this:
>
>
> [outbound]
> Exten => _X.,1,Dial(SIP/${EXTEN}@1.1.1.1,,U(call-answer-from-carrier))
>
> Exten => h,1,NoOp(ANSWERED_TIME: ${ANSWEREDTIME} >>> DIAL_TIME:
> ${DIALEDTIME} >>> HANGUP_TIME: ${EPOCH} >>> ANSWERED TIME ${MATH(${EPOCH}-${
> ANSWEREDTIME},int)})
>
> [call-answer-from-carrier]
> Exten => s,1,Noop(CALL WAS ANSWERED AT ${EPOCH}
> Exten => s,n,Agi(some_script.py)
>
> Now in theory the hangup time of the call (${EPOCH} in the h extension)
> minus the answered time should be the same as the noop from my subroutine.
> I am finding that some times they match and some times they are off by a
> second. My issue is that the external system expects the answered time to
> the same for when we call it from the SubRoutine as well as from the h
> extension. I assume the difference is based on the microsecond of when we
> look at EPOCH how DIALEDTIME is rounded.
>
> Any tips on how I can get the same answered time across the board?
>
> TIA.
>
> Dovid
>
>
>
>
>
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