[VoiceOps] Ghost calls - Sipvicious?
keith.croxford1 at gmail.com
Tue Nov 12 19:06:10 EST 2013
Try this -
Add this to your config file. This will cause the phone to respond with a
'400 bad request' unless the INVITE comes from the registrar.
*Adtran (Only applies to the local SIP stack (voice users, trunks etc) ) *
Add an ACL, which only lists your proxy/SBC IPs
ip access-list standard my-proxy
remark MY IP SPACE
permit x.x.x.x y.y.y.y log
!Apply the ACL as a sip access-class
ip sip access-class my-proxy in
On Tue, Nov 12, 2013 at 4:37 PM, Jay Hennigan <jay at west.net> wrote:
> We operate a hosted VoIP platform using Broadworks and over 90% Polycom
> phones. We have a number of customers at diverse locations recently
> reporting dead-air calls. These typically come from a source ANI of 100
> or 7070 and have no audio.
> Most of the phones are behind Adtran TA900 series IADs with NAT and a
> SIP access list allowing only our own SBCs.
> The calls don't show up in our SBC logs, nor do they show in the MOS
> graphs on the Adtran voice quality monitoring.
> Any ideas or suggestions on what is causing this or how to stop it?
> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
> Impulse Internet Service - http://www.impulse.net/
> Your local telephone and internet company - 805 884-6323 - WB6RDV
> VoiceOps mailing list
> VoiceOps at voiceops.org
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