Receiving Automatic calls from "CISCO" name continuously

[wajid dabir]

We have installed one Cisco SX20 VC in our office last week only. Since then we are receiving auto call with name Cisco with no ip address.

Everyday approx. 250 calls we are getting on VC.

VC Network Configuration: Configured with Public static IP address, we don't have firewall in network and using as a standalone VC.

Product:

Cisco TelePresence SX20

 

Software version:

TC7.3.0.8cb420c

 

Can someone please help me to fixed this issue ASAP.

 

Regards,

Wajid Dabir

 

[Jens Didriksen]

This has been covered quite a few times already, take a look at this thread; https://supportforums.cisco.com/discussion/12340591/nuisance-h323-calls-sx20 and https://supportforums.cisco.com/discussion/12336591/sourceh323idcisco-incomingcalls and https://supportforums.cisco.com/discussion/12472426/rogue-calls-expressway-e-can-they-be-blockeddropped for starters.

Not much you can do about it unless you put your system on a private address behind a gatekeeper etc.

You can at least avoid the SIP version of these scans by at least turning off SIP listening port, or turning SIP off all together unless you really need it. But no such luck when it comes to these h.323 scans.

/jens

Please rate replies and mark question(s) as "answered" if applicable.

[Patrick Sparkman]

Here is another discussion that was just asked within this week, unknow-miscall-are-getting-sx20.

As Jens mentions (5+), you'll need to secure the endpoint behind your firewall or if you use a call control server such as CUCM or VCS.  Even using a VCS, you'll still get these calls, but it will be much easier to manage and prevent.