[Asterisk-Dev] Bug with toll free between 2 asterisk servers(special toll free signaling?)

[Enzo Michelangeli]

----- Original Message ----- 
From: "John Lange" <john.lange at open-it.ca>
To: "Asterisk Developers Mailing List" <asterisk-dev at lists.digium.com>
Sent: Saturday, September 24, 2005 12:11 AM
Subject: Re: [Asterisk-Dev] Bug with toll free between 2 asterisk
servers(special toll free signaling?)

[...]
> I also don't think the toll-free system relies on caller id otherwise it
> would be trivial to spoof (not that it would save you any money since
> the call is free anyhow).

In my experience, it does. For a while I could not terminate calls to US
800 numbers routed through ENUM resolution with e164.org (they are sent to
sip:1800 at tf.voipmich.com, which returned to me a SIP response 500
"Internal Server Error"). After reporting the issue to e164.org's support,
I got back a reply saying that I needed to provide a valid US caller ID.
The problem anyway went away: perhaps tf.voipmich.com now fills in a
spoofed caller ID if it doesn't receive a valid one from the SIP caller.

Enzo