[asterisk-users] PRI Outbound CallerID Question
jltaylor at metrotel.net
Thu Sep 28 15:34:03 MST 2006
----- Original Message -----
From: "Kristian Kielhofner" <kris at krisk.org>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: Tuesday, September 26, 2006 4:28 PM
Subject: Re: [asterisk-users] PRI Outbound CallerID Question
> Shawn Kelley wrote:
>> Hi all,
>> I've searched around and haven't found much of an answer to my issue. Any
>> advice from you would be appreciated.
>> Problem: Need to take an inbound call from our PRI and forward it to
>> PSTN user via the PRI, sending the original callers id with it.
>> I know this can be done since we currently use an 800 service that does
>> You call the 800 number; they answer and put you on hold. They then
>> to the pstn numbers we have defined and the incoming call shows up with
>> original callers CID, we answer and have options to accept or reject the
>> So I know the 800 provider is staying in the middle of the call and not
>> performing a redirect to us.
>> I've tried the various CID settings in Asterisk, but am not able to use
>> anything but our DID numbers for our outbound caller id.
>> My telco has been unresponsive to this issue. Does anyone know if it's
>> possible with a PRI or do you have to have some
>> other type of PSTN connection such as SS7?
> 1) When a call comes in, put the original CALLERID(number) into a
> variable. This way, if you mess with the real CALLERIDNUM through your
> dialplan you can always set it back. I like to use KKFROMCID to make sure
> that no scripts, Asterisk, etc mess with my original CID!
> 2) Get a telco that lets you set any CID. I don't know if I just look
> trustworthy or something, but I have had no problems whatsoever getting
> several LECs and CLECs in multiple states to let me set any CID I want.
> Looking at the other posts, it seems that some people have problems with
> that. I never considered it to be a big deal, just a cool privilege that
> you gain with a PRI... It seems that isn't the case with some telcos.
> 3) I don't know if this works or not, but I could swear that there is a
> redirect possible on PRI (similar to SIP 302). I don't know if
> app_transfer (and your telco) support it, but it would be really cool
> because it would save you in terms of the number of used channels. (Using
> 0 channels instead of 2).
> Check this thread:
> Kristian Kielhofner
There's a good chance that one reason they are unresponsive is the loss of
revenue - if you change the caller id number to something that is not
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