This chapter defines a basic set of functions needed for operation, maintenance and management of the MUP. This includes functions for handling of exchange data related to the MUP, and also means to perform supervision and verification of the procedures applied by the MUP.
The functions given in this section shall only be looked upon as guidelines for what the implementation shall aim at with regard to O&M functions for MUP.
4.2 Administration and operation functions
The implementation shall fulfil the operation and maintenance requirements for administration and operation functions, as specified in NMT Doc. 900-2.
4.3 Handling of data related to the MUP
The exchange system shall have functions to allow handling of data related to the MUP. This requirement implies that such data is to be regarded as exchange data to be handled (i.e. created, modified, investigated, activated, deactivated or removed) via the normal I/ O routines including the necessary MML functions, of the exchange.
The table below indicates the different procedures that must be implemented in the exchange for handling of data related to the MUP:
The following abbreviations are used:
c means "creation",
m means "modification",
i means "investigation",
a means "activation",
d means "deactivation",
r means "removal".
|
Item |
Procedure |
|||||
|
c |
m |
i |
a |
d |
r |
|
|
Handling of routing data |
x |
x |
x |
x |
x |
x |
|
Threshold values for generating alarms/ printouts |
x |
x |
||||
The values of all timers specified must be controllable in a simple way. The recommended value and the possible range is given in section 3.11.
The MUP applies timers T1 .. T7 for securing the signalling procedures. At time-out of T2 and T3, information is given to the operation and maintenance system of the exchange.
Expiration of timer T2 and T3 shall be supervised. The operation and maintenance system shall include a quotient counter for this timers per known MTX. Alarms/ fault printouts shall be generated in the exchanges at defined thresholds.
The operation and maintenance system shall include a quotient counter per known MTX for each of the following situations:
- a message or signal received abnormally, and
- a message received containing unreasonable information.
When a defined threshold value is reached, an alarm should be given to O&M personnel.
The exchange system shall have functions for monitoring MUP transactions. It shall be possible to monitor transactions originated or received to/ from specified exchanges, for which timing and contents of all MUP messages involved in the transactions shall be obtainable.
4.5 Statistics and measurements
The exchange shall have possibilities of providing statistics and measurements data as specified below. These data shall be collected and presented to the environment according to the same principles as specified for other statistics information from the exchange, ref. NMT Doc. 900-2.
Recording of statistics shall be performed per known MTX for each of the following situations:
- Time-out of all timers.
- All messages with a "Reason" field included. Each type of reason shall be recorded separately.
- Abnormal messages and signals received, and
- Messages received containing unreasonable information.
Statistics of MUP traffic interests and traffic volume shall be recorded. Statistics should be collected for the number of messages to/ from each of the other MTX’s known.