Lantronix EMG 8500 EMG User Guide - Page 198

10: Device Ports DTR Control The type of DTR control feature. The options include: None, Toggle DTR, or Auto Enable DTR: None: No option selected. Toggle DTR: If enabled, when a user disconnects from a device port, DTR will be toggled. DTR will be de-asserted, and after a 2-second delay, will be re-asserted. This feature can be used when a serial connection requires DSR to be active for the attached device to connect. In this case, toggling DTR will end any active connection on the device. Auto Enable DTR: If enabled, DTR will be de-asserted and will remain deasserted until the first connection (Connect Direct, Telnet, SSH, TCP In or ConsoleFlow Web Terminal Session) is established to the device port. At this time, DTR will be asserted. DTR will remain asserted as long as any connection exists to the device port. Once the last connection is terminated, DTR will be deasserted. The Assert DTR setting is ignored if DTR Control is set to Auto Enable. Note: Applies to serial RJ45 device ports only. Reverse Pinout USB VBUS If enabled, swaps the positions of the serial lines, such that the direction of data or the signal is reversed. For instance, TX is swapped with RX. Enabling Reverse Pinout facilitates connections to Cisco and Sun style RS-45 console ports using a straight through Ethernet patch cable, without the need for a rolled cable or adapter. Enabled by default. Note: Applies to serial RJ45 device ports only. All Lantronix serial adapters are intended to be used with Reverse Pinout disabled. For USB Device Ports only. If enabled, the USB VBUS signal provides power to the USB device attached to a device port. Disabling VBUS will power down the device as long as it is bus-powered instead of self-powered. The VBUS 5V signal is up to 100 mA per port, but not to exceed 600mA total per USB I/O Module. Drawing more than 150 mA on a USB port will shut down the VBUS 5V. Caution: USB ports are designed for data traffic only. They are not designed for charging or powering devices. Over-current conditions on VBUS 5V may disrupt operations. Modem Settings (Device Ports) Note: Depending on the State and Mode you select, different fields are available. State Mode Used if an external modem is attached to the device port. If enabling, set the modem to dial-out, dial-in, dial-back, dial-on-demand, dial-in/host list, dial-back & dial-on-demand, dial in & dial-on-demand, CBCP Server, and CBCP Client. Disabled by default. See Modem Dialing States (on page 231) for more information. The format in which the data flows back and forth:  Text: In this mode, the EMG assumes that the modem will be used for remotely logging into the command line. Text mode can only be used for dialing in or dialing back. Text is the default.  PPP: This mode establishes an IP-based link over the modem. PPP connections can be used in dial-out mode (e.g., the EMG unit connects to an external network), dial-in mode (e.g., the external computer connects to the network that the EMG is part of), or dial-on-demand. EMG™ Edge Management Gateway User Guide 198