Lantronix EMG 8500 EMG User Guide - Page 235

10: Device Ports number to use for dial-back. The EMG device will request the type of number defined by CBCP Client Type - either an Admin-defined Number (the CBCP server determines the number to call) or a User-defined Number (the EMG unit will provide the Fixed Dial-back Number as the number to call). If the CBCP handshake is successful, the EMG unit will terminate the PPP connection, hang up, and wait for the server to dial back. When the remote server calls back the EMG unit and the PPP connection is established, the user will be authenticated via PAP or CHAP (configured with the Authentication setting). For PAP, the Local/Remote list will be used to authenticate the login and password sent by the PPP peer. For CHAP, the CHAP Handshake Host/User Name and Secret/User Password will be used to authenticate CHAP Challenge response sent by the PPP peer. Once authenticated, a PPP session will be established using either negotiated IP addresses or specific IP addresses (determined by the Negotiate IP Address setting). Notes:  In a state where the modem will be answering a call, the modem should always be configured for manual answer, not auto answer.  When answering a call, the EMG unit answers after the 2nd ring.  Any text or PPP connection can be terminated by setting the modem state to disabled. Key Sequences The default values for the various key sequences (Escape Sequence, Break Sequence, View Port Log Sequence, Power Menu Sequence) are set to different key sequences, and it is recommended that they always be set to different key sequences so that the EMG can properly handle each of the functions accessed by the key sequence while connected to a device. For example, if the View Port Log Sequence is set to the same sequence as the Power Menu Sequence, and this sequence is typed while connected to a device port, both the Power Menu and the option to display Port Log will be displayed, with the Power Menu taking precedence and processing user input. If any of the key sequences are set to the same value, the precedence used to process the key sequences is:  Escape Sequence  Power Management Sequence  View Port Log Sequence It is also recommended that the key sequences not share a significant amount of overlap other than the first character. For example, if the View Port Log Sequence is set to ABCD and the Power Management Sequence is set to ABCE, the first three characters of both sequences are the same - this is not recommended. When any portion of key sequences overlap, typing a complete escape sequence for one of the sequences will reset recognition of the other sequences back to the beginning of the key sequence. For example, with the default View Port Log sequence of ESC-V and the default Power Management sequence of ESC-P, if the user types "ESC-V" and views the port log and then returns to interacting with the device, they need to type "ESC-P" to view the Power Menu, and not just "P". When detecting key sequences, after receiving the first character(s) of a sequence, the EMG will wait 3 or more seconds for the remaining characters, before timing out and sending all characters to the device. For example, if the Escape Sequence is ABCD, and the user types "AB", the EMG will wait at least 3 seconds for the next character ("C") before timing out and sending the "AB" characters to the device. EMG™ Edge Management Gateway User Guide 235