1349 - MSU invalid size – discarded

An MSU less than 5 bytes or greater than 279 bytes was detected by the MTP layer 3 software in an ATM card. A four byte MSU may cause the ATM connection to bounce (four byte PDUs are used for SSCF control). MSU length limit is 279 bytes.

Example

2864.1349    CARD 6112,A  INFO    MSU invalid size - discarded
            LEN=114
            SIO=93  OPC=  227-040-000    DPC=  209-122-150
            DATA=09 81 03 0c 15 09 89 06 0a 21 80 95
                 97 10 89 09 89 95 0a 21 80 95 89 30
                 03 44 62 42
            LSN=n209068063
            Report Date:13-11-09  Time:09:48:33 

Note:

The length of the MSU (for example, LEN=114) includes the length of the SIF plus some other parameters. The length of these other parameters varies depending on the protocol managed by the LIM card issuing the UIM.

Alarm Level: No alarm condition. The message is informational only.

Recovery

No action necessary.