Not MusicOnHold in asterisk-1.8.?

Hi, i have installed asterisk-1.8.0 and i have this in dialplan

exten=>2,1,MusicOnHold(default)

Everything looks to be fine but i can hear anything…

the output of moh show files is

dahdi*CLI> moh show files Class: default File: /root/CTI-294/moh/macroform-robot_dity2 [Nov 26 11:30:55] NOTICE[7117]: chan_sip.c:23270 handle_request_subscribe: Received SIP subscribe for peer without mailbox: 201 dahdi*CLI>

and the output when dialing is normal, look:

dahdi*CLI> == Using SIP RTP CoS mark 5 -- Executing [4@phone-201:1] MusicOnHold("SIP/201-00000001", "default") in new stack -- Started music on hold, class 'default', on SIP/201-00000001 dahdi*CLI>

How to fix it??