chanspy direct to extension to agent only

[jason leong]

I would like to set chanspy direct to agent extension only. Agent extension have 1XX, 2XX and 3XX, Management extension have 1XXX,2XXX,3XXX. may i know how to configure extensions_custom.conf to chanspy agent extension only? Below is my current setting on the extensions_custom.conf file. Please help

exten => 5556,1,Macro(user-callerid)
exten => 5556,2,Authenticate(1234)
exten => 5556,3,Read(SPYNUM,agent-newlocation)
exten => 5556,4,ChanSpy(SIP/${SPYNUM))

Thanks & Regard
Jason Leong