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<b>From</b>: "Phil Frost" <phil@macprofessionals.com><br />
<b>Sent</b>: Thursday, February 23, 2012 4:39 PM<br />
<b>To</b>: "Asterisk Users Mailing List - Non-Commercial Discussion" <asterisk-users@lists.digium.com><br />
<b>Subject</b>: Re: [asterisk-users] Rejecting transfers to in-use parking spaces</span><br />
<br />
On Feb 23, 2012, at 16:32 , Richard Mudgett wrote:<br />
>> exten => _*70[123],1,NoOp(parking in ${EXTEN:1})<br />
>> same => n,Set(PARKINGEXTEN=${EXTEN:1})<br />
>> same =><br />
>> n,GotoIf(${DEVICE_STATE(park:${PARKINGEXTEN}@parkedcalls)}=INUSE?busy)<br />
>> same => n,Park()<br />
>> same => n(busy),Busy()<br />
>> <br />
>> What I'm hoping to<br />
>> accomplish is have Asterisk respond to the Sip REFER to *701 with a<br />
>> 404 or similar response; if Asterisk can do this, then the Snom will<br />
>> say "transfer failed!".<br />
<br />
> The dialplan device state check above is not always going to work<br />
> because another call could park in that space between the check<br />
> and the actual park. [...]<br />
> <br />
> Please note that for Asterisk to detect an extension as a parking<br />
> extension, the first priority of the extension must be the park<br />
> application. If the park application is not the first priority of<br />
> the extension, then the transfer is treated as a normal transfer.<br />
<br />
<br />
Hmm. Well, I could live with that race condition. Our call volume is low enough that the odds of hitting it acceptably low.<br />
<br />
I'm not entirely sure what it means for Asterisk to detect an extension as a parking extension. Can you please explain how a parking transfer is different than a normal transfer?<br />
<br />
--<br />
_____________________________________________________________________<br />
<br />
I was working on this today. I have it figured out but I don't have simple dialplan code I can share as we are doing a lot of external db and script calls to make ours work with our realtime stuff. We also are using the Dynamic Parking stuff as well I pulled that out to simplify things. <br />
<br />
<span lang="EN">
<p>[DoPark-Pickup-BlindPark]</p>
<p>exten => s,1,NoOp(Dynamic Parking Pickup)<br />
exten => s,n,NoOp(Return Parked Call)<br />
exten => s,n,GoToIf($[${LEN(${BLINDTRANSFER})} > 0]?doParkAttempt,1)</p>
<p>exten => s,n,ParkedCall( PLACE DIALED EXTENSION VARIABLE HERE)</p>
<p>exten => doParkAttempt,1,NoOp(Attempt To Park)<br />
Place logic to parse the ${BLINDTRANSFER} to get the return to extension </p>
<p>exten => doParkAttempt,n,Set(PARKINGLOT="Your Lot or var to handle the lot")<br />
exten => doParkAttempt,n,Set(PARKINGEXTEN=( PLACE DIALED EXTENSION VARIABLE HERE)) <br />
exten => doParkAttempt,n,Park(time out, return_context, return_ext, return priority, s)<br />
<br />
If park fails return the call back to your return context, exten, priotiry<br />
<br />
exten => doParkAttempt,n,Goto(return_context,return,ext, return priority) <br />
<br />
Good luck<br />
Bryant</p>
</span>exten => doParkAttempt,n,Goto(return_context,return,ext, return priority) Good luckBryant</span>