name: SMS services status IE
full_form: Short Message Service services status Information Element
context: Apart from the actions on the tracking area updating attempt counter, the description for tracking area update for EPS services as specified in clauseÂ 5.5.3.2.4 shall be followed. In addition, the following description for tracking area updating for SMS services applies.
  In NB-S1 mode, if the UE requested "SMS only" in the Additional update type IE and supports NB-S1 mode only, the MME decides to accept the tracking area update request for EPS services only and:
  -	the location update for non-EPS services is not accepted by the VLR as specified in 3GPPÂ TSÂ 29.118Â [16A]; or
  -	the MME decides to not accept the tracking area update request for "SMS only",
  the MME shall set the EPS update result IE to "EPS only", shall not indicate "SMS only" in the Additional update result IE in the TRACKING AREA UPDATE ACCEPT message and shall include an appropriate SMS services status value.
  The UE receiving the TRACKING AREA UPDATE ACCEPT message takes one of the following actions depending on the value included in the SMS services status IE:
  "SMS services not available"
  The UE shall stop timer T3430 if still running, shall reset the tracking area updating attempt counter, shall set the EPS update status to EU1 UPDATED and shall enter state EMM-REGISTERED.NORMAL-SERVICE. The USIM shall be considered as invalid for SMS services until switching off or the UICC containing the USIM is removed or the timer T3245 expires as described in clauseÂ 5.3.7a.
  "SMS services not available in this PLMN"
  The UE shall stop timer T3430 if still running, shall reset the tracking area updating attempt counter, shall set the EPS update status to EU1 UPDATED and shall enter state EMM-REGISTERED.NORMAL-SERVICE.
  The UE may provide a notification to the user or the upper layers that the SMS services are not available.
  The UE shall not attempt normal attach or tracking area updating procedures indicating "SMS only" with current PLMN until switching off the UE or the UICC containing the USIM is removed. Additionally, the UE may perform a PLMN selection according to 3GPPÂ TSÂ 23.122Â [6].
  "Network failure"
  The UE shall stop timer T3430 if still running. The tracking area updating attempt counter shall be incremented, unless it was already set to 5.
  If the tracking area updating attempt counter is less than 5:
  -	the UE shall start timer T3411, shall set the EPS update status to EU1 UPDATED and shall enter state EMM-REGISTERED.NORMAL-SERVICE. When timer T3411 expires the normal tracking area updating procedure for EPS services and "SMS only" or the combined tracking area updating procedure for EPS services and "SMS only" is triggered.
  If the tracking area updating attempt counter is equal to 5:
  -	the UE shall start timer T3402, shall set the EPS update status to EU1 UPDATED and shall enter state EMM-REGISTERED.NORMAL-SERVICE. When timer T3402 expires the normal tracking area updating procedure for EPS services and "SMS only" or the combined tracking area updating procedure for EPS services and "SMS only" is triggered.
  "Congestion"
  The UE shall stop the timer T3430 if still running. The tracking area updating attempt counter shall be set toÂ 5. The UE shall start the timer T3402, shall set the EPS update status to EU1 UPDATED, and shall enter state EMM-REGISTERED.NORMAL-SERVICE. When timer T3402 expires the normal tracking area updating procedure for EPS services and "SMS only" or the combined tracking area updating procedure for EPS services and "SMS only" is triggered.
  Other values are considered as abnormal cases. The tracking area updating procedure shall be considered as failed for SMS services. The behaviour of the UE in those cases is specified in clauseÂ 5.5.3.2.6A.
description: This information element is used to indicate the status of SMS services.
explanation: Categorized as an Information Element because it carries specific information.
biotag_Context: O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Service,O,O,O,B-Mode,O,O,O,B-Device,O,O,O,O,O,O,O,O,B-Message,O,O,B-Mode,I-Mode,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Message,I-Message,I-Message,B-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Message,O,O,B-Message,I-Message,I-Message,I-Message,I-Message,O,O,O,O,O,B-Service,O,O,O,O,B-Device,O,O,B-Message,I-Message,I-Message,I-Message,I-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Service,O,O,O,O,O,O,O,O,B-Device,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,B-State,B-State,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,B-Service,O,O,O,O,O,O,B-Device,O,O,B-Device,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,B-State,B-State,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Service,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,B-Device,O,O,B-Device,O,O,B-Device,O,O,O,O,B-Device,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,B-Network,O,O,O,B-State,B-State,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,B-Network,O,O,O,B-State,B-State,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,B-Network,O,O,O,B-State,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Service,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O
biotag_Description: O,O,O,O,O,O,O,O,O,O,B-Service,O