o  dead timer

    Default: 10000         Value: 1-65535

    Specifies the delay, in milliseconds, between polls of one of the
    set of dead tributaries. This attribute is supported only if the
    characteristic protocol is set to control.

 o  delay timer

    Default: 0             Value: 0-65535

    Specifies the minimum delay, in milliseconds, between polls. You
    can use this timer to limit the effect of a fast control station
    on slower tributaries. A value of 0 means that no delay is added.
    This attribute is supported only if the characteristic protocol
    is set to control.

 o  physical line

    Default: No name       Value: Local entity name

    Name of the Physical layer entity that the link operates over. A
    value for this characteristic must be set before the link entity
    is enabled. You can modify this characteristic only when the
    entity is disabled.

 o  protocol

    Default: Point         Value: See following description

    Protocol mode used by the local station. You cannot modify this
    characteristic.

    The value of this characteristic is a copy of the protocol
    argument specified when the ddcmp link entity is created. The
    default value is point and is the only permissible value.

 o  receive buffers

    Default: 4             Value: 1-255

    Specifies the number of receive buffers reserved for the link.
    You can modify this characteristic only when the entity is
    disabled. Also, you can only increase the characteristic value.

 o  retransmit timer

    Default: 3000          Value: 1-65535

    Maximum time (in milliseconds) to wait between sending a message
    and receiving a valid response. If this time expires, the local
    station takes error recovery action. On full-duplex point-to-
    point links, the timer is started immediately when a message is
    sent.

 o  scheduling timer

    Default: 200           Value: 50-65535

    Specifies the time, in milliseconds, between the recalculation of
    tributary polling priorities. This attribute is supported only if
    the characteristic protocol is set to control.

 o  stream timer

    Default: 6000          Value: 0-65535

    Specifies the time, in milliseconds, for which a tributary or
    the remote station (on a half-duplex point-to-point link) can
    hold the line. This characteristic is not supported if the
    characteristic protocol is set to tributary.