Hi Igor,

Looking at the kamailio pdb module code I can see that it should work well for prefixes smaller than the MAX_SHORT_INT= 32767 = 2^15-1 because:

typedef int16_t carrier_t;
...
struct dt_node_t {
    struct dt_node_t *child[10];
    carrier_t carrier;
};

Also I think you should try:

bufsize = slen + 1 + 1 + *5* + 1 + 1; // instead of your "+ 4"

Also the utils/pdbt/pdb_server.c is using the same int16_t for carrierid.

This can be an idea of enhancing the kamailio pdb module to be able to set the number of prefix digits via modparam (and use uint32_t for carrierid).

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