how to influence the number transmitted after connecting

[Nicolas Rachinsky]

Hallo,

how can I influence the number which is transmitted to the caller
after accepting a call with i4btel?

|-- NT->TE - unit:2 - frame:244770 - time:19.08 01:00:19.162098 -
|length:29 -----
|Q931: pd=Q.931/I.451, cr=0x01 (from destination), message=CONNECT: 
|     [date/time: 19.08.03 01:00]
|     [connected number (Q.951): 8914959497 (type=national, plan=ISDN,
                                 ^this one
|          presentation allowed, screening network provided)]

Thanks
Nicolas