[Serusers] Ser dead+ mediaproxy.

[root]

Hi All.
I have a problem with SER when i use mediaproxy.
I install SER in a computer(Linux Fedora 2) with ip 192.168.1.37.
System run properly.
I install more mediaproxy into system SER because i want to solve
problem NAT.I had configured my config file.
I begin test system mediaproxy :
I have 2 GranStream BT100:
BT1 :192.168.1.33 Phone :111
BT2 :192.168.1.35 Phone :333
When i make a call from 333 to 111 then display following:

[root at dhcppc4 root]# tail -f /var/log/messages
Dec 30 11:59:55 dhcppc4 proxydispatcher[3292]: command delete
57d2c31487b829d9 at 192.168.1.33 info=
Dec 30 11:59:55 dhcppc4 proxydispatcher[3292]: command execution time: 
0.77 ms
Dec 30 11:59:55 dhcppc4 proxydispatcher[3292]: command request
57d2c31487b829d9 at 192.168.1.33 192.168.1.33:5004:audio 192.168.1.33
192.168.1.37 local 192.168.1.35 remote Grandstream=20BT100=201.0.5.16
info=from:111 at 192.168.1.37:5060,to:333 at 192.168.1.37:5060,fromtag:41cbda14a0e4af53,totag:
Dec 30 11:59:55 dhcppc4 proxydispatcher[3292]: domain 192.168.1.37
doesn't define any mediaproxy.
Dec 30 11:59:55 dhcppc4 proxydispatcher[3292]: will use default
mediaproxy for this call.
Dec 30 11:59:55 dhcppc4 mediaproxy[3296]: command request
57d2c31487b829d9 at 192.168.1.33 192.168.1.33:5004:audio 192.168.1.33
192.168.1.37 local 192.168.1.35 remote Grandstream=20BT100=201.0.5.16
info=from:111 at 192.168.1.37:5060,to:333 at 192.168.1.37:5060,fromtag:41cbda14a0e4af53,totag:,dispatcher
Dec 30 11:59:55 dhcppc4 mediaproxy[3296]: session
57d2c31487b829d9 at 192.168.1.33: started. listening on 192.168.1.37:35022
Dec 30 11:59:55 dhcppc4 mediaproxy[3296]: command execution time:  4.85
ms
Dec 30 11:59:55 dhcppc4 proxydispatcher[3292]: forwarding to mediaproxy
on /var/run/mediaproxy.sock: got: '192.168.1.37 35022'
Dec 30 11:59:55 dhcppc4 proxydispatcher[3292]: command execution time:
246.63 ms
Dec 30 12:00:17 dhcppc4 mediaproxy[3296]: command status
Dec 30 12:00:17 dhcppc4 mediaproxy[3296]: command execution time:  0.48
ms
Dec 30 12:00:55 dhcppc4 mediaproxy[3296]: session
57d2c31487b829d9 at 192.168.1.33: 0/0/0 packets, 0/0/0 bytes
(caller/called/relayed)
Dec 30 12:00:55 dhcppc4 mediaproxy[3296]: session
57d2c31487b829d9 at 192.168.1.33: ended (did timeout).

I see no packets throught mediaproxy and Ser dead.And when i do
statement ./sessions.py then display :
Caller      Via                  Called     Status    Duration  Codec   
Type   Traffic
---------------------------------------------------------------------------------------
?.?.?.?:? - 192.168.1.37:35022 - ?.?.?.?:?  inactive     0'22"  Unknown 
Audio  0/0/0

I don't know to solve it.
Can anybody help me.
Thanks a lot.