RTP Debug... strange thing

My asterisk server is set to re-invite is no…
and when i call to a peer outside my intranet, i set the “rtp set debug on”

My intranet sip phone ip is : 192.168.0.250
My destination sip phone ip is: 60.50.52.67

here is a piece of log

Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008415, ts 2071200, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008416, ts 2071360, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008417, ts 2071520, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008418, ts 2071680, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008419, ts 2071840, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008420, ts 2072000, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008421, ts 2072160, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008422, ts 2072320, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008423, ts 2072480, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008424, ts 2072640, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP P2P packet to 192.168.0.250:16482 (type 00, len 000160)
Sent RTP P2P packet to 60.50.52.67:42006 (type 00, len 000160)
Sent RTP packet to 218.102.39.37:40618 (type 00, seq 008425, ts 2072800, len 000160)

(At the same time only 192.168.0.250 and 60.50.52.67 are talking to each other, no other peers)

what is the IP 218.102.39.37 do? it is not my asterisk public ip… why asterisk keep sending data to this IP? is it a spy?.. thanks…

Try (in linux): -dig -x 218.102.39.37
Or (in windows cmd): -nslookup 218.102.39.37
Might give you some clues.

while this is happening, you should do a

core show channels
sip show channels

to see what is up on the system.

I found that 218.102.39.37 is a HK ip…
btw, after I restart the service asterisk, it seems not happen again…
(I think some body didn’t hang up after the conversation…)

Thanks all.