TLV 112 identifies the user equipment identifier associated with the event.
The user equipment field is represented as an encoded string, where:
- The first part of the string is a unique tag that describes the identifier value that follows. Currently defined identifier types are:
- IMEISV
- MAC
- EU164
- MODIFIED_EU164
- ESN
- MEID
- The unique tag is followed by a delimiter character (currently ":").
- The delimiter is followed by the actual identifier value.
- Allowed Occurrences - 0..1
- Value - String