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Configuring the Asynchronous Control Character Map

You can specify the configured value of the Asynchronous Control Character Map (ACCM) that is proposed to the remote Point-to-Point Protocol (PPP) peer during PPP negotiation. By default, the following control values are mapped:

Modify the ACCM to meet the inband control character requirements of the asynchronous DCE devices, such as modems. The ACCM specifies the ASCII control characters in the remote PPP peer's transmit data stream that are translated to transparent character sequences to ensure that they are passed by the local DCE device.

If certain ASCII control characters have special meaning to the modems or other DCE devices being used, use the ACCM to force the control characters to map to transparent, two-character sequences.

The ACCM is for asynchronous interfaces only and has no effect for synchronous interfaces.

To configure the ACC map, complete the following steps:

  1. Load NIASCFG, then select the following parameter path:

    Select Configure NIAS > Protocols and Routing > Network Interfaces

  2. Scroll to a configured PPP interface, then select it.

    The PPP Network Interface Configuration menu is displayed.

  3. Select Negotiation Options .

    The PPP Negotiation Options menu is displayed.

  4. Select Asynchronous Control Character Map .

    The Async Control Character Map Configuration menu is displayed.

  5. Select a specific control character.

  6. Select Enabled or Disabled from the pop-up menu.

    If you select Enabled , the ACC map forces that control character to map to a transparent, two-character sequence that has a meaning to the modem or DCE device.

  7. Press Esc to return to the Internetworking Configuration menu; save your changes when prompted.

  8. If you want these changes to take effect immediately, select Reinitialize System .

    If you want to configure other parameters, do so now, then reinitialize the system when you are finished.



  Previous Page: Using CPECFG to Configure Modem and DCE Devices  Next Page: Configuring Additional Modem/DCE Parameters