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.

     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.

     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.

     PROTOCOL
         Default: Point

         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.

     RECEIVE BUFFERS
         Default: 4                               Value: 1-255

         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.

     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.

     SCHEDULING TIMER
         Default: 200                             Value: 50-65535

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

     STREAM TIMER
         Default: 6000                            Value: 0-65535

         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.