#0  find_callno (callno=2, dcallno=16386, sin=0xb6d87340, new=0, lockpeer=1, sockfd=10)
    at /usr/local/src/ss7/asterisk/include/asterisk/lock.h:534
        hash = 176
        pvt = (const struct chan_iax2_pvt *) 0x44495242
        res = 0
        x = Variable "x" is not available.