asterisk users - Jan 2006 - double ringing tone on asterisk 1.2

While I wait for the call to be answered I hear a "double ringing
tone",
like :

expected tone :
tuuu         tuuu         tuuu         tuuu

what I hear :
tuuu tuuu   tuuu tuuu   tuuu tuuu   tuuu tuuu

the second "tuuu" I think is generated somewhere and not
"true", since
it sounds slightly different and the lambda between the first and the 
second is always different.

the problem appears no matter where I terminate the call (IAX or Zap), 
and I don't have that problem on a 1.0.7 connected to the same PRI lines 
and IAX servers , what I have to check ? looked in confif files but 
appears to be the same (indications, modules loaded, iax, zapata, the 
dial in extensions is the same)

Simone Cittadini wrote:
> While I wait for the call to be answered I hear a "double ringing
tone",
> like :
> 
> expected tone :
> tuuu         tuuu         tuuu         tuuu
> 
> what I hear :
> tuuu tuuu   tuuu tuuu   tuuu tuuu   tuuu tuuu
> 
> the second "tuuu" I think is generated somewhere and not
"true", since
> it sounds slightly different and the lambda between the first and the 
> second is always different.
> 
> the problem appears no matter where I terminate the call (IAX or Zap), 
> and I don't have that problem on a 1.0.7 connected to the same PRI
lines
> and IAX servers , what I have to check ? looked in confif files but 
> appears to be the same (indications, modules loaded, iax, zapata, the 
> dial in extensions is the same)
Are you by chance including an "r" option in the dialplan entries 
associated with these calls?

If so, try removing it.