asterisk users - Jan 2012 - Wired attack on Asterisk - Can anyone explain this?

Hello,

Can anyone explain what this attack was trying to do? *19.19.19.19 *is my
server IP and it seems that they are trying to use my server IP to initiate
a SIP call to 199.16.208.29 or 199.16.208.30. Is that so?

*Call Date         Channel Source                         CLID
                                                                   DST
Disposition Duration * 10/4/2011 19:58 SIP/19,19,19,19-0000061f
  111222 199.16.208.29  199.16.208.30 <111222> s ANSWERED 3 10/4/2011
19:58
SIP/19,19,19,19-0000061f          111222 199.16.208.29  199.16.208.30
<111222> s ANSWERED 3 10/4/2011 19:58 SIP/19,19,19,19-00000620 101
199.16.208.29
 199.16.208.30 <101>                 s ANSWERED 2 10/4/2011 19:58
SIP/19,19,19,19-00000620 101 199.16.208.29  199.16.208.30 <101>
    s ANSWERED 2 10/4/2011 19:58 SIP/19,19,19,19-00000621 1001 199.16.208.29
 199.16.208.30 <1001>         s ANSWERED 1 10/4/2011 19:58
SIP/19,19,19,19-00000621 1001 199.16.208.29  199.16.208.30 <1001>        
s
ANSWERED 1 10/4/2011 19:59 SIP/19,19,19,19-00000622 200 199.16.208.29
 199.16.208.30 <200>                 s ANSWERED 1





Thanks,
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