[SIPForum-discussion] Phantom Calls on ATA

Saurabh Shah saurabh.shah at matrixcomsec.com
Wed Oct 16 04:52:08 UTC 2013

change sip port,
use tls,
use authentication,

----- Original Message -----
From: Antonieta Lobo <antonieta.lobo at gmail.com>
To: discussion at sipforum.org
Sent: Tue, 15 Oct 2013 08:47:46 +0530 (IST)
Subject: [SIPForum-discussion] Phantom Calls on ATA

Hi there,

We are receiving attacks on our customers ATAs, they receive a direct call
from unknown source, and the ringing doesnt end until the client pick up.
Which parameter we can adjust on ATA to solve this problem. The solution
that i think is that the ATA doesn`t response these invites, but i dont
know where we can adjust that.


Best Regards

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