Agilent Technologies 8922M, S GSM manual MS Information / Signaling

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MS Information / Signaling

14.Power Class This field displays the power class of the mobile station, as sent by the mobile station during a call. This number will correspond with a maximum power level the mobile station is allowed to transmit.

15.TMSI On/Off When On is selected, the Agilent 8922M/S will attempt to identify the mobile station by its TMSI (Temporary Mobile Subscriber Identity) number. A random TMSI number is generated for reallocation to a mobile station. The random TMSI number is displayed in the TMSI Number field.

The TMSI is checked as part of the call setup process. During an initial call setup with a mobile station, the TMSI will have to be assigned to the mobile station by the Agilent 8922M/S. This assigned TMSI is then expected by the Agilent 8922M/S during subsequent call setups, as long as a TMSI is used and the IMSI remains the same.

If a TMSI received from the mobile station is not valid, the Agilent 8922M/S will calculate a new TMSI and reallocate it to the mobile station as part of the call setup. The following situations can cause a TMSI to not be valid; when the mobile station identifies itself with an IMEI number (emergency call), or when a new IMSI is used.

When Off is selected, the mobile station will continue to use the old TMSI until the next location update occurs. When the next location update occurs, the mobile station will be instructed to delete its last TMSI, and the Agilent 8922M/S will perform the identification procedure to determine the IMSI.

16.Set Paging IMSI When this field is selected, the MS IMSI number reported by the mobile station is copied to the Paging IMSI field, to be used for Agilent 8922M/S BS (base station) originated calls (Mobile Terminated Calls).

17.Reallocation When this field is selected a random TMSI number is generated for allocation to a mobile station. The random TMSI number is displayed in the TMSI Number field.

18.TMSI Number This field displays the current Temporary Mobile Subscriber Identity (TMSI) number assigned to the mobile station.

If a TMSI received from the mobile station is not valid, the Agilent 8922M/S will calculate a new TMSI and automatically reallocate it to the mobile station. Any time a signaling link is established, TMSI reallocation can be performed manually. See Reallocation.

Ki	This field is used to enter the mobile station’s Authentication Key (Ki). When the
	Authentication Mode is Partial or None, this field is not displayed.

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