(RADIATOR) Working with Cisco IVR

[Kitabjian, Dave]

Hmm. I don't think there was anything too complicated about setting up the
Gateway to do the IVR part. But I didn't do that part :) I handled the
Radius part. That was a little tricky. For the IVR script that we chose on
the Gateway, it works like this:
 

1. Phone call comes in
2. Before the IVR says ANYTHING, the IVR does PRE-authentication to RADIUS,
using User-Name = <CallerId> and Password = "".
3. If that authentication passes, then the IVR asks for the destination
number and the call is placed. But if the authentication fails, the IVR asks
for the Account# and PIN, and then does the SECOND RADIUS authentication,
using User-Name = <Account#> and Password = <PIN>. Assuming the second one
passes, then the call is placed. 

 
To handle both cases, we put the following hook in the main <Client> clause:
 
        # Get the decoded password from the input packet and add an
attribute
        # to the input packet if it is blank. Set the decoded password equal
        # to the user name attribute.
        PreHandlerHook sub {if (${$_[0]}->decodedPassword() eq '') \
                {${$_[0]}->add_attr('ANI-No-Pass', 'true'); \
                ${$_[0]}->{DecodedPassword}
=${$_[0]}->get_attr('User-Name');}}
 
and then we use two Handlers for the two different cases:
 

# Handler for BLANK password  
<Handler ANI-No-Pass = true>
 
        AuthBy LDAP_AUTH_NO_PASSWORD
 
</Handler>
 
# Handler for "catch-all"
<Handler>    
 
        AuthBy LDAP_AUTH

</Handler>

Then, in LDAP_AUTH AuthBy we have:
 
        UsernameAttr     uid    
        PasswordAttr      pass 
 
whereas in the LDAP_AUTH_NO_PASSWORD AuthBy we use:
 
        UsernameAttr     uid 
        PasswordAttr    uid 
 
It works quite nicely. If there's a smoother solution, I'd love to know of
it!
 
Dave

-----Original Message-----
From: J. Esteban Saa Barona. [mailto:estebs at hotmail.com] 
Sent: Thursday, June 28, 2001 1:37 PM
To: dave at netcarrier.com
Subject: prepaid calling cards with Cisco


Hi Dave,
 
I'm triying to do prepaid calling cards using Cisco Gateways, we have many
1750 and I don't know how to make them do Interactive Voice Responce and
check input against a DB. Can you please point me in the  right direction ?
 
You may want to check my website I developed I Call Detail Recorder for
Cisco Gateways. Usefull for postpaid and QOS Reports.
 
Thank you in advance,
 
Esteban
newagetelco.com

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