Hello.

After doing much web searching and searching archives of this mailing list, I see that my question has been asked at least 6 separate times but no answers have been attached.

In a nutshell, is there a way for a SIP phone to easily hook flash a ZAP analog trunk mid-call? (This is important when trying to make use of features on a PSTN analog line such as call waiting, call forwarding, 3-way calling, etc.)

I've seen the *3 trick (mentioned in the comments here http://www.voip-info.org/wiki/index.php?page=Asterisk+cmd+Flash ), but I don't know in which context to put the extensions.conf stuff:

exten => s,n,Set(DYNAMIC_FEATURES=zapflash)
exten => s,n,Dial(SIP/xxxx,15,tw)

...to make it take effect while on a call.

My configuration:

- 1 X100P card with one analog line attached with call waiting, caller ID, 3-way calling enabled on the line.
- 1 Snom 300 SIP desk phone

My Zapata.conf:

[trunkgroups]
; define any trunk groups

[channels]
; hardware channels
; default

usecallingpres=yes
usecallerid=yes
cidstart=ring
cidsignalling=bell
callwaiting=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=no
callreturn=no
immediate=no       ; for Caller ID, allows time for telco to send digits
hidecallerid=no
echocancel=yes
echotraining=yes
useincomingcalleridonzaptransfer=yes
context=from-pstn       ; Incoming calls go to [from-pstn]
signalling=fxs_ks       ; Use FXS signalling for an FXO channel
group=0                 ; Use with Zap/g0
channel => 1            ; PSTN attached to port 1


Thank you very much for your time. Hopefully we can get an answer to this and put it on the Wiki for all to see!

Sincerely,
Sean M. Pappalardo

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