asterisk users - Oct 2004 - sipura 3000 , music on hold (playtones)

hi,

I have some problem with musiconhold or playtones (background,...)

in this context someone dial out thru sipura 3000:

Executing Dial("Zap/1-1", "SIP/sipura3000/054419949|20|m")
in new stack
    -- Called sipura3000/054419949
    -- Started music on hold, class 'default', on Zap/1-1
    -- SIP/sipura3000-61fe is ringing
    -- SIP/sipura3000-61fe answered Zap/1-1
    -- Stopped music on hold on Zap/1-1

this happens for about  1 sec.
evrything is fine, but i need music(or playtones or something else) to 
be stopped a few seconds (eg.3 or 4 sec.)
after a SIP/sipura3000 is answered.
 
how to do this?

tnx,
Tomaz