Nortel Networks 553-3001-211 manual Initiating conditions, Echo

NT7D16 Data Access card Page 461 of 894

•Autoparity to ensure that the keyboard dialing menu is readable on the data terminal during the interactive dialogue mode

•Originating calls to local and remote hosts

•Ring Again

•Speed Call

•Two answer modes for incoming calls: manual and auto

•Digit display

•Dialing by mnemonic

Initiating conditions

In order for the DAC to respond to user commands/entries, the following conditions must be met:

•The DAC must be active (power ON), and have successfully received the downloaded parameters from the system.

•The user equipment must be active, and, if in RS-232-C mode, must assert these control lines

—DCE mode: DTR (unless Forced DTR has been software selected)

—DTE mode: RI has cycled the appropriate number of times

Echo

During call setup (dialogue phase), all user input is echoed back to the user equipment. Once the call is established, the DAC is transparent to data communication. To get echoed characters after a call is established, the far end must provide the echo.

Note: When RS-232-C modes 12-15 (Host modes) are selected, there is no echo during dialogue phase.

Circuit Card Description and Installation