Receiving Automatic calls from "CISCO" name continuously

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

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
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Cisco IOS Software, 2800 Software (C2800NM-IPVOICEK9-M), Version 12.4(24)T3, RELEASE SOFTWARE (fc2)
ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
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2 FastEthernet interfaces
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239K bytes of non-volatile configuration memory.
1948656K bytes of USB Flash usbflash0 (Read/Write)
497448K bytes of ATA CompactFlash (Read/Write)
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CONFIG (Version=7.1)
=====================
Version 7.1
Cisco Unified Communications Manager Express
isdn switch-type basic-net3
voice translation-rule 1
rule 1 /^2929091$..$/ /\1/
rule 2 /^2929091$.$/ /\1/
rule 3 /^02929091$..$/ /\1/
rule 4 /^02929091$.$/ /\1/
voice translation-rule 2
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voice translation-rule 10
rule 1 /$^......$$/ /0\1/ type national national plan isdn isdn
rule 8 /$^......$$/ /00\1/ type international international plan isdn isdn
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translate calling 10
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voice translation-profile PSTN-OUT
translate calling 2
interface BRI0/0/0
description Isdn channels 1 & 2
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isdn switch-type basic-net3
isdn timer T310 60000
isdn overlap-receiving T302 3000
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isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
isdn static-tei 0
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isdn timer T310 60000
isdn overlap-receiving T302 3000
isdn point-to-point-setup
isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
isdn static-tei 0
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isdn timer T310 60000
isdn overlap-receiving T302 3000
isdn point-to-point-setup
isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
isdn static-tei 0
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isdn switch-type basic-net3
isdn timer T310 60000
isdn overlap-receiving T302 3000
isdn point-to-point-setup
isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
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translation-profile outgoing PSTN-OUT
compand-type a-law
description Connessione con CO Telecom channels 1 & 2
voice-port 0/0/1
translation-profile incoming PSTN-IN
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compand-type a-law
description Connessione con CO Telecom channels 3 & 4
voice-port 0/1/0
translation-profile incoming PSTN-IN
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compand-type a-law
description Connessione con CO Telecom channels 5 & 6
voice-port 0/1/1
description Disponibile
voice-port 0/2/0
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connection plar 83
description Interphone 40
station-id name Citofono
station-id number 40
caller-id enable
voice-port 0/2/1
cptone IT
description Ced 35
station-id name CED
station-id number 35
caller-id enable
voice-port 0/2/2
cptone IT
description FAX_1 50
station-id name FAX_1
station-id number 50
caller-id enable
voice-port 0/2/3
cptone IT
description FAX_2 60
station-id name FAX_1
station-id number 60
caller-id enable
dial-peer voice 1001 pots
description **Sends call to PSTN line 1-2**
destination-pattern 0T
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
port 0/0/0
dial-peer voice 2001 pots
description **Receives calls coming from PSTN line 1-2**
destination-pattern 2929091..
incoming called-number .T
direct-inward-dial
port 0/0/0
dial-peer voice 1003 pots
description **Sends call to PSTN line 3-4**
destination-pattern 0T
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
port 0/0/1
dial-peer voice 2003 pots
description **Receives calls coming from PSTN line 3-4**
destination-pattern 2929091..
incoming called-number .T
direct-inward-dial
port 0/0/1
dial-peer voice 1005 pots
description **Sends call to PSTN line 5-6**
destination-pattern 0T
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
port 0/1/0
dial-peer voice 2005 pots
description **Receives calls coming from PSTN line 5-6**
destination-pattern 2929091..
incoming called-number .T
direct-inward-dial
port 0/1/0
dial-peer voice 2035 pots
description **Receives calls coming from PSTN to Extension 35**
answer-address 35
destination-pattern 35$
incoming called-number 35
port 0/2/1
dial-peer voice 2040 pots
description **Receives calls coming from PSTN to Extension 40**
destination-pattern 40
incoming called-number 40
no digit-strip
direct-inward-dial
port 0/2/0
dial-peer voice 2050 pots
description **Receives calls coming from PSTN to Fax 50**
destination-pattern 50
incoming called-number 50
no digit-strip
direct-inward-dial
port 0/2/2
dial-peer voice 2060 pots
description **Receives calls coming from PSTN to Fax 60**
destination-pattern 60
incoming called-number 60
no digit-strip
direct-inward-dial
port 0/2/3
CME#

Hi Paolo.
Sorry for the delay. I was on holiday.
I would like to keep separate incoming calls from outgoing calls.
So I decided to keep two dial peers for every BRI interface.
I followed your suggestion on eliminate commands:
"incoming called-number" on FXSs,
various "progress_ind" on BRIs
Also I eliminated "direct-inward-dial" on FXSs,
Today I reconfigured and right tested the dial peers as following:
!   Bri Interfaces
dial-peer voice 1001 pots
description **Sends call to PSTN line 1-2**
destination-pattern 0T
port 0/0/0
dial-peer voice 2001 pots
description **Receives calls coming from PSTN line 1-2**
destination-pattern 2929091..
incoming called-number .T
direct-inward-dial
port 0/0/0
dial-peer voice 1003 pots
description **Sends call to PSTN line 3-4**
destination-pattern 0T
port 0/0/1
dial-peer voice 2003 pots
description **Receives calls coming from PSTN line 3-4**
destination-pattern 2929091..
incoming called-number .T
direct-inward-dial
port 0/0/1
dial-peer voice 1005 pots
description **Sends call to PSTN line 5-6**
destination-pattern 0T
port 0/1/0
dial-peer voice 2005 pots
description **Receives calls coming from PSTN line 5-6**
destination-pattern 2929091..
incoming called-number .T
direct-inward-dial
port 0/1/0
!   FXS interfaces
dial-peer voice 2035 pots
description **Receives calls coming from PSTN to Extension 35**
destination-pattern 35
no digit-strip
port 0/2/1
dial-peer voice 2040 pots
description **Receives calls coming from PSTN to Extension 40**
destination-pattern 40
no digit-strip
port 0/2/0
dial-peer voice 2050 pots
description **Receives calls coming from PSTN to Fax 50**
destination-pattern 50
no digit-strip
port 0/2/2
dial-peer voice 2060 pots
description **Receives calls coming from PSTN to Fax 60**
destination-pattern 60
no digit-strip
port 0/2/3
Thanks a lot Paolo. :-)
Giorgio.

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