Page: 5Service Guide OF2200/2400/2600Chapter 1 Principles of Operation1.1.02 Communications ModeThe unit operates as a half-duplex facsimile transceiver. Transmit and receive operations cannot takeplace at the same time. However, documents can be prepared for transmission while the machine isengaged in message reception. These documents will be automatically transmitted upon completion of thereceiving operation.Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)