DEFLECTED MOBILE CALL HANG UP

[lindelott]

VERSION=CXP1010115/4/TSWSP05/R6A
I'm having a strange problem
If I deflect my mobile phone to my internal number(analog or digital)call make first ring and hangup

If i deflect my fixed phone to same internal number(analog or dgital)call it is ok
any idea?
thanks

 

[lindelott]

I make a trace
this is the result:

FACILITY IE:
Type of Protocol: ETSIECMA
Network Facility Extension not included
Interpretation APDU not included, reject any unrecognized Invoke PDU
Type of component: Invoke PDU
Invoke ID: 128 (H0080)
Type of Service unknown, contains the following data:
> H02 H01 H0F
> H30 H0A
> H02 H01 H01
> H0A H01 H00
> HA1 H02
> H81 H00

any idea?
thanks