This read-only variable indicates the emulation type and configuration of the device. CAPTF100 devices exist in two varieties, the CAPTF10033xx-100, the copper port of which emulates a telephone, and the CAPTF10033xx-110, the copper port of which emulates the Central Office (CO) (i.e. a wall jack that one would plug a telephone into). The Standard CAPTF100 configuration is employed when a fiber extension between a wall jack and a distant telephone is desired. The CAPTF100 whose copper port was plugged into the wall jack must be of the variety that emulates a telephone. The value of the captf100Emulates(14) variable of such a device will be phone(1). The CAPTF100 whose copper port was plugged into the telephone must be of the variety that emulates the CO, and that device must be jumpered for 'Standard' operation. The value of its captf100Emulates(14) variable would be coStandard(2). Alternatively, CAPTF100 converters can be used to provide a point-to-point fiber link between two telephones. This is known as the Automatic Ring-Down configuration. When one telephone goes off-hook, the other rings. When both are off hook, voice communication is possible. In this configuration, both CAPTF100 devices must be of the variety that emulates the CO, and both devices must be jumpered for 'Automatic Ring-Down' operation. The value of their captf100Emulates(14) variables would be coAutoRingDown(3).