name: REJECT
full_form: Reject
context: A user may cause a DTMF tone to be generated e.g. by depression of a key in the mobile station. The relevant action is interpreted by the mobile station as a requirement for a DTMF digit to be sent in a START DTMF message on an established FACCH. This message contains the value of the digit to be transmitted (0, 1, ..., 9, A, B, C, D, *, #). Only a single digit will be transferred in each START DTMF message. On sending a START DTMF message the MS shall start timer T336. Where a previous START DTMF message has been sent, another START DTMF message shall only be sent by the MS following receipt of its STOP DTMF ACKNOWLEDGE message (see subclause 5.5.7.4) or a START DTMF REJECT message from the network (see subclause 5.5.7.2) or following the expiry of timers T336 and T337. If timer T336 expires, the MS shall terminate the ongoing DTMF procedure without any retransmissions, and is free to begin another DTMF procedure (e.g. another START DTMF message).
description: The REJECT message in the context of DTMF procedures refers to a specific signaling message sent by the network to the mobile station, indicating that a previous START DTMF request has been rejected. This rejection allows the mobile station to either reinitiate the DTMF procedure or terminate it based on timer expirations.
explanation: REJECT is classified as a Message because it represents a specific type of signaling data exchanged between the network and the mobile station, conveying the outcome of a START DTMF request. This classification aligns with the context provided from the 3GPP TS 24.008 specification, where messages like REJECT play a crucial role in managing DTMF procedures.
section_title: 5.5.7.1 Start DTMF request by the mobile station
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