ZyXEL Elite 2864I User Guide - Page 186

DCE reports this result code when the DCE has determined upon detection of an answer-tone that the remote station is a data modem. The DCE may also issue this result code when the DCE has assumed that the remote station has gone off-hook by actions associated with the +VRA and the +VRN commands. The DCE issues the NO ANSWER result code when the DCE has continuously detected ringback for the amount of time specified in S-register S7. • ATH (with + FCLASS=8) This command causes the DCE to hang up the phone. In voice mode, this command is equivalent to the +VLS=0 command, and the DCE switches to the data mode (+FCLASS=0) with autobauding, regardless of the state of the +VNH command. When the +VNH=0 command is in effect and the DCE is not in voice mode, the ATH command behaves as it would for the data mode. This command does not change any of the voice mode parameters such as +VSM, +VSD, etc. When the +VNH=1 or +VNH=2 command is in effect and the DCE is not in voice mode, the DCE issues an OK result code as a result of the ATH command, but the DCE may or may not go on-hook depending on the setting of the +VNH command. As part of the call discrimination algorithm, the DCE may switch to other modes, such as facsimile or data, in order to try handshakes in these modes. Voice mode does not support the ATH1 command. • AT+FCLASS= This command selects a DCE mode -- data, fax, or voice. The DCE recognizes the value of 8 as the Voice Mode. 0 1 2 2.0 6 8 Z DCE mode Data Mode Fax Mode, Service Class 1 (TIA/EIA-578) Fax Mode, Service Class 2 (TIA PN-2388) Fax Mode, Service Class 2.0 (TIA/EIA-592) Fax Mode, ZyXEL Fax AT Commands Voice Mode (TIA IS-101) ZyXEL fax parallel port print and/or DRAM store mode The DCE returns the OK result code if the DCE accepts the command. The DCE returns the ERROR result code if the subparameter is not permitted. • AT+FCLASS? The DCE returns the current mode setting followed by the OK result code. 16-10