32 BIIS 1200 OPERATION■ BIIS 1200 operationThe Binary Interchange of Information and Signalling (BIIS)1200 standard is the best choice to add a data service to anexisting system. It enables digital communications, signallingand message exchanges with analog transceivers.The BIIS system provides calling features such as Individual,Group, and Emergency calls, as well as enables receivingand transmitting status messages and SDM.NOTE: During BIIS 1200 operation, dPMR operation isdisabled.■ BIIS displayThe following displays appear in BIIS 1200 operation.CONNECT : When an acknowledgement of an Individual orGroup call is received.OK : When an acknowledgement of a message (sta-tus message or SDM) is received.FAILED : When no acknowledgement of a call is re-ceived.WAIT : While transmitting.CLR DOWN : When a connection is terminated.BUSY : When the operating channel is busy.■ Receiving a callD Receiving an Individual callq When an Individual call is received:• Rings sound.• “ ” appears and the mute is released.• “ ” appears or blinks, depending on the pre-programmed set-tings.• Your own ID (or name) and the calling station’s ID (or name)blink.0 0 0 11 2 3 4Appears or blinksAppearsYour own ID Calling station’s IDw While holding down [PTT], speak into the microphone atyour normal voice level.e Release [PTT] to receive.r After the communication is finished, push [Moni (Audi)] tosend a ‘Clear down’ signal to terminate the connection.• Either you or the calling station can send a ‘Clear down’ signal.• “ ” disappears, “CLR DOWN” appears for approximately 2seconds, and the transceiver automatically returns to thestand-by mode.