Trying to dial from Spark ( not happen !)

What´s wrong ?

I am trying to dial from Spark but not happen.

Please, look at the configurations :

*ASTERISK-IM/GENERAL SETTINGS

Enabled = yes

Server=ipfone

Port=5038

Username=asteriskim

Password=im

Drop-down device selection=yes

Asterisk context: interno

Default Caller ID:

Dila Command Variables:

ASTERISK-IM/PHONE MAPPINGS

Username= vinicia Device= SIP/4311 Extensio= 4311 Caller ID=

Username= savio Device= SIP/4320 Extensio= 4320 Caller ID=

WILDFIRE/SERVER/EDIT PROPERTIES

asterisk.manager.context= interno

asterisk.manager.defaultCallerId=

asterisk.manager.dialVariables=

asterisk.manager.pasword= hidden

asterisk.manager.port= 5038

asterisk.manager.server= ipfone

asterisk.manager.userDeviceDrop= true

asterisk.manager.username=asteriskim

/etc/asterisk/extensions.conf

interno

exten => _43XX,1,Dial(SIP/$&IAX2/$,30,Ttj)

exten => _43XX,2,Playtones(congestion)

exten => _43XX,3,Wait(5)

exten => _43XX,4,Hungup()

exten => _43XX,102,Playtones(congestion)

exten => _43XX,103,Wait(5)

exten => _43XX,104,Hungup()

/*etc/asterisk/sip.conf

4311

type=friend

username=4311

secret=4311

callerid=vinicia <4311>

qualify=yes

host=dynamic

canreinvite=no

context=interno

nat=no

4320

type=friend

username=4320

secret=4320

callerid=savio <4320>

host=dynamic

context=interno

qualify=yes

canreinvite=no

nat=no

*/etc/asterisk/manager.conf

general

enabled = yes

port = 5038

bindaddr = 127.0.0.1

asteriskim

secret=im

deny=0.0.0.0/0.0.0.0

permit=172.16.13.36/255.255.0.0

read = system,call,log,verbose,command,agent,user

write = system,call,log,verbose,command,agent,user

thanks.

Vinícia.