Is there a case for this belowing symptom,

VG224 connect CCM with SCCP, the analog phone on vg224 can only get one ZERO as calling ID. It's ,

when calling number is 0999, the analog phone shows 0999; but

when calling number is 0099, the analog phone shows 099; and

when calling number is 0009, the analog phone shows 09; and

when calling number is 0000, the analog phone shows 0.

All above testing is OK between two IP PHones.

So, it seems that only one ZERO at the beginning of calling number can be shown as calling id on analog phone through VG224....

WHat's wrong, and how to handle this issue??

WHy??