[asterisk-r2] MFC/R2 protocol error on chan 5: Multi Frequency Cycle Timeout

[Alfredo Andaluz Prado]

Hi all

try to incomming call from E1 R2 using OpenR2 version: 0.1.1, revision: 
98 , the context for testing its simple

[incoming]
exten => _X.,1,Answer()
exten => _X.,n,Playback(hello-world)
exten => _X.,n,Hangup()

the msg ist:

[Nov 14 15:16:00] ERROR[14425] chan_dahdi.c: MFC/R2 protocol error on 
chan 5: Multi Frequency Cycle Timeout

any idea ?