L2100A:SITE_CRC_ERR_PORT0
L2101A:SITE_CRC_ERR_PORT1
L2102A:SITE_CRC_ERR_PORT2
L2103A:SITE_CRC_ERR_PORT3
L2104A:SITE_CRC_ERR_PORT4
L2105A:SITE_CRC_ERR_PORT5
L2106A:SITE_CRC_ERR_PORT6
L2107A:SITE_CRC_ERR_PORT7
L2108A:SITE_CRC_ERR_PORT8
L2109A:SITE_CRC_ERR_PORT9
L2110A:SITE_CRC_ERR_PORT10
L2111A:SITE_CRC_ERR_PORT11
L2112A:SITE_CRC_ERR_PORT12
L2113A:SITE_CRC_ERR_PORT13
L2114A:SITE_CRC_ERR_PORT14
L2115A:SITE_CRC_ERR_PORT15
L2116A:SITE_CRC_ERR_PORT16
L2117A:SITE_CRC_ERR_PORT17
L2118A:SITE_CRC_ERR_PORT18
L2119A:SITE_CRC_ERR_PORT19
L2120A:SITE_CRC_ERR_PORT20
L2121A:SITE_CRC_ERR_PORT21
L2122A:SITE_CRC_ERR_PORT22
L2123A:SITE_CRC_ERR_PORT23
The BSC and the BTS communicate through E1 cables.
The BTS detects whether there are CRC errors on E1 ports every second. If an error occurs, the values of the counters are incremented by one, and the total is reported to the BSC every five minutes. Then, the BSC accumulates the reported numbers to get the value in a GP.
These measurements provide the duration of CRC errors on E1 ports. The greater the value is, the worse the transmission quality is.
s.
The BTS reports the message containing CRC authentication results to the BSC every five minutes. Then, these counters are measured according to the port number in the message.
This is an original counter without involving any formula.