Why Can't dial? Using "Asterisk 11.4.0"

Why I can’t dial??
Uh?

I have this dial plan in my phone

[internal]
exten=>_XXX,1,Answer()
exten=>_XXX,n,Dial(SIP/${EXTEN})
exten=>_XXX,n,Hangup()

But it doesn’t dial. :S I have been using asterisk for 2 years and what is this???

Check y output

== Using SIP RTP CoS mark 5 -- Executing [201@internal:1] Answer("SIP/201-0000001b", "") in new stack > 0xfb0ed48 -- Probation passed - setting RTP source address to 192.168.10.50:50452 -- Executing [201@internal:2] Dial("SIP/201-0000001b", "SIP/201") in new stack == Using SIP VIDEO CoS mark 6 == Using SIP RTP CoS mark 5 -- Called SIP/201 == Everyone is busy/congested at this time (1:0/0/1) -- Executing [201@internal:3] Congestion("SIP/201-0000001b", "3") in new stack == Spawn extension (internal, 201, 3) exited non-zero on 'SIP/201-0000001b' -- Executing [h@internal:1] Answer("SIP/201-0000001b", "") in new stack == Spawn extension (internal, h, 1) exited non-zero on 'SIP/201-0000001b' Linux*CLI>

I’m using asterisk-11.4.0

And sip show peers says ???

sip show peers

Connected to Asterisk 11.4.0 currently running on iOS (pid = 17666) Linux*CLI> sip show peers Name/username Host Dyn Forcerport ACL Port Status Description 201/201 192.168.10.50 D N 16644 OK (102 ms) 1 sip peers [Monitored: 1 online, 0 offline Unmonitored: 0 online, 0 offline] Linux*CLI>

I’m asterisk guru. I know how to configure extensions.conf, sip.conf,etc.
I don’t know what this is happening with this version. :S

Help me*

So if you are an asterisk guru then you know what is the next step---->SIP DEBUG.