lpE1CrcErrors 1.3.6.1.4.1.562.2.4.1.12.8.18.1.8

If the interface is a DS1 line, it is the current count of CRC-6 errors. These will only be counted when the lineType is ESF. If the interface is an E1 line, it is the total number of CRC-4 errors. These will only be counted when crc4Mode is on.