When user A is bridged with the client (right before it is done) set a
variable that the call was taken, this way when he presses 1 to accpet the
system checks to see what the value is, if its in taken mode he gets the
message and then gets hung up on.
----- Original Message -----
From: "Graham Mainwaring" <[EMAIL PROTECTED]>
To: <asterisk-users@lists.digium.com>
Sent: Monday, October 30, 2006 3:38 AM
Subject: [asterisk-users] Multiple dial macros at the same time
I am setting up an after-hours on-call system. Someone calls in and
requests service, and while they listen to music on hold, we dial out to
several people's cell phones and home phones. We don't know if they will be
answered by the employee, or by voicemail or a spouse/relative/child/pet.
So we play a message that says "press 1 to accept the call" and ask
employees to train their spouse/relative/child/pets not to press 1.
The following extract from my dialplan shows how I have this feature set
up. This is with Asterisk 1.2.13.
[macro-screen]
exten => s,1,Set(MACRO_RESULT=CONTINUE)
exten => s,2,Read(ACCEPT|press-1-to-accept|1|skip|3|1)
exten => s,3,GotoIf($[${ACCEPT}=1]?5:4)
exten => s,4,MacroExit
exten => s,5,Set(MACRO_RESULT=)
exten => s,6,Playback(please-say-hello)
[menu]
exten => _FOLS1NXXNXXXXXX,1,Dial(SIP/${EXTEN:[EMAIL PROTECTED],20,oM(screen))
exten => s,1,Playback(welcome)
exten => s,2,Dial(LOCAL/FOLS19195551000&LOCAL/FOLS19195552000,,tm)
exten => s,3,Voicemail(u301)
exten => s,4,Hangup
In order for this to work, I needed the ability to restore MACRO_RESULT
back to an unset state. For now I just hacked the Set application so that
after removing the variable from the context, it only re-creates it if the
value provided is greater than zero length. In the future I will probably
write an UnSet application to handle this more gracefully, unless someone
knows a better way to unset a variable.
This all works fine, with one small problem that is driving me batty. I
would appreciate any insight or ideas on how to solve this. Here's the
scenario:
1. Caller dials the number and hears the welcome message,
then music on hold.
2. Simultaneous calls are made to Employee A at 555-1000
and Employee B at 555-2000 (per above).
3. Both of them answer the phone.
4. Employee A presses one and hears "you will now be connected,
please say hello to the caller."
5. Employee A is bridged to the caller, says hello, and begins
working with them.
6. A few seconds later, the Employee B also presses 1. He also
hears "you will now be connected."
7. Employee B fails to bridge, and is hung up on.
The problem is, these are pretty urgent calls and employees are highly
motivated to make sure they get answered. Employee B doesn't know whether
the call dropped because someone else got it, or because of a phone system
problem of some sort. He is now obligated to figure out what's up with the
call and make sure someone got it. What I want instead is for Employee B
to hear an alternate message that says "someone else got the call." This
gives positive confirmation that it's not his problem, so he can roll over
and go back to sleep.
I can see two ways of doing this.
1. Write a function called BridgedChannel that takes a channel ID and
returns its bridge peer channel ID, if any. This would allow me to set a
variable __PARENTCHANNEL with the channel ID of the incoming call, before
the Dial command executes. The macro, at priority 6, can then check
BridgedChannel(${__PARENTCHANNEL}). If it has a value then the call is
already bridged and we can tell the employee not to worry.
2. Have a MySQL database with a single table with two fields, varchar
channel-ID and boolean answered. When the call starts do update table set
answered=false where channel-ID=${__PARENTCHANNEL}. When an employee dials
1, retrieve the value of answered for __PARENTCHANNEL and also set it to
true in a single transaction. If the returned value was false, tell them
to answer the call and bridge; if the returned value was true, tell them
to go back to sleep and hang up.
Solution #1 requires me to write a whole new function, and solution #2
requires a MySQL database, which is pretty big dependency for such a
simple function.
Does anyone see a simpler way of doing this, or have any ideas for other
avenues to pursue?
Thanks in advance,
-Graham
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