I have done this successfully in 2 ways depending on your requirements.
Usually, I just set the callerid number right in the SIP, this is the easiest
and cleanest in my opinion. Worth mentioning that I always set the callerid in
the SIP regardless, this way I know that internal calls, trunk calls, whatever
are clean when it rings on any phone (including internal). In this case my DID
number (block of 100) are easily mapped to my extensions (forward planning
during setup) because the extension is the last 4 digits of the DID. This way
in the default context I can say exten => _12345XX,1,Goto(default,${EXTEN:3},1)
where the extension would be 45XX.
The second way that I have done this is by using the Asterisk internal database
(no API or outside DB to worry about). Then just simply do a DB lookup for the
proper callerid before routing the call out. Where I have had to use this is
when multiple phones are grouped (multiple groups) to share a DID number for
their callerid.
***********************************************
Sam Lutgring
Director of Informational Technology Services
Calhoun Intermediate school district
[email protected]<mailto:[email protected]>
www.calhounisd.org<http://www.calhounisd.org>
From: [email protected]
[mailto:[email protected]] On Behalf Of Roland
Sent: Tuesday, March 27, 2012 4:59 AM
To: [email protected]
Subject: [asterisk-users] Outbound DID: in sip.conf or dialplan or db?
I am setting up my dialplan with quite some outbound numbers. We have a block
of 100 DID's, for which some of them will go direct to specific phones. I am
struggling how to solve this, so I am searching for a little advice. These are
my concerns.
I could set the DID in the sip.conf using something like:
callerid="137-Roland" <31229253137>
137 would be my extention number here.
I think the downside of this is, that I should configure this for each SIP
account. I could specify a default callerid, which our main DID, in a template,
but then people will see this general ID when I call internal extentions as
well. This way the receiver cannot see my extention number.
Other solution would be to specify my DID in the dailplan. I tried this
solution, which works:
exten => _00Z.,1,NoOp(Call Received from ${CALLERID(num)} to ${EXTEN:1})
exten => _00Z./Jeroen_S,2,Set(CALLERID(num)=31229700210)
exten => _00Z./Roland_odA,2,Set(CALLERID(num)=31852013900)
exten => _00Z./Schoolshopper,2,Set(CALLERID(num)=31852013900)
exten => _00Z.,2,Set(CALLERID(num)=31229700203)
same => n,GotoIf($[${CALLERID(num)}=31852013900]?otconnect:voys)
same => n(otconnect),Set(OUT=999210485)
same => n,Goto(dodial)
same => n(voys),Set(OUT=143810001)
same => n(dodial),Dial(SIP/${EXTEN:1}@${OUT})
Upside is that I can be more specific in routing. The same handset could have
different DID's, but I think usually the DID is bound to a SIP account. So I
would probably create a second SIP account if a user needs an extra DID anyways.
The downside in my opinion is that my Dialplan will be filled with around 30
extra lines with account specific stuff. I would rather keep my dialplan code
clean. Also when I would have more patterns that can be matched, I have to
specify them for this pattern as well. That would already take around 60 lines
of extra code.
I have considered an AGI call to fetch the data from a database. But wouldn't
this be a higher risk? When the database fails or is too slow, it will not
work? I would rather use mysql than the asterisk db, because i can manage mysql
easy with phpmyadmin.
Any suggestions would be appreciated! Am I missing any options here?
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