[Asterisk-Users] grandstream handytone 286 sometimes dials out wrong number

[Giorgio Incantalupo]

Hi,
I have an asterisk 1.2.1 (on a debian sarge) box with a TDM400P card. I 
connected the TDM400P to a grandstream 286 to use a VoIP provider.
It seems all right except for a little problem: one call every 30 is 
made to a wrong number.
Is there anybody who had the same problem and solved it?

TIA

Giorgio Incantalupo