(gdb) bt
#0  0x006e24dc in memcpy () from /lib/tls/libc.so.6
#1  0xf6b824d8 in q931_get_number (num=0xf6b0fdb0 "\v¡7864025251\025k", 
    maxlen=256, src=0xf6b10145 "±övw¸öè¶\025\n", len=-1) at q931.c:743
#2  0xf6b827e8 in dump_calling_party_subaddr (full_ie=0, pri=0x0, ie=0x0, 
    len=0, prefix=0 '\0') at q931.c:783
#3  0x00000000 in ?? ()