[Asterisk-Users] Call forwarding

[albertoocdc at mundo-r.com]

Hi. I´m trying to make call forwarding in Asterisk.

I set  it up calling *21*<Extension>  (My extension are 4 digits long)

I have this in extensions.conf

[context]
exten => *21*X.,1,DBPut(CFIM/${CALLERIDNUM}=${EXTEN:4})
exten => *21*X.,2,Hangup

exten => _XXXX,1,DBGet(temp=CFIM/${EXTEN})
exten => _XXXX,2,Dial(SIP/${temp},15,tr)
exten => _XXXX,102,Dial(SIP/${EXTEN},15,tr)

I´m making a call like *21*1516 from the 1530 extension

Then when I call 1530 from the 1426 extension, I have:

   -- Executing DBget("SIP/1426-ca06", "temp=CFIM/1530") in new stack
    -- DBget: varname=temp, family=CFIM, key=1530
    -- DBget: set variable temp to 1516
    -- Executing NoOp("SIP/1426-ca06", "Marcamos el desvio") in new stack
    -- Executing Dial("SIP/1426-ca06", "SIP/1516|15|tr") in new stack Sep 30 08:38:56 NOTICE[1257868208]: app_dial.c:696 dial_exec: Unable to create channel of type 'SIP'
  == Everyone is busy/congested at this tim

What am I doing wrong? 

Thanks in advance