NCLHELP.HLB  —  SNA Peer Server Module, SDLC  Link subentity, set  Characteristics
   Line            local entity    Specifies the Modem Connect Line on
                   name            which the SDLC protocol operates.
                                   This attribute is settable only
                                   when the Link is disabled.  For
                                   more information about Modem
                                   Connect Line refer to the
                                   DECnet-Plus Network Control Language
                                   Reference.

   Capability      primary |       Specifies the capability of the
                   secondary |     Station subentities of this Link
                   negotiable      entity. Negotiable stations can
                                   become either primary or secondary.
                                   This attribute is settable only when
                                   the Link is disabled. The default is
                                   negotiable.

   Configuration   pointtopoint |  Specifies whether the Link supports
                   multipoint      only a point-to-point connection or
                                   can also support a multipoint
                                   connection.  Multipoint supports one
                                   or more than one connection.  This
                                   attribute is settable only when the
                                   Link is disabled. The default is
                                   pointtopoint. The Peer Server does
                                   not support multipoint primary
                                   connections.

   Connection      nonswitched |   Specifies whether the Link supports
   Type            switched        switched or nonswitched connections.
                                   This attribute is settable only when
                                   the Link is disabled. The default is
                                   nonswitched.

   Receive         (1-32764)       Specifies the maximum frame size
   Frame                           (excluding the header) that can be
   Size                            received on the line represented by
                                   this Link. This attribute is settable
                                   only when the Link is disabled. The
                                   default is 1000.

   Reply Timer     (100-60000)     Specifies the time (in milliseconds)
                                   to wait for an acknowledgment before
                                   starting the recovery procedure. The
                                   default is 3000.

   Retry           (0-128)         Specifies that, when the Link is
   Maximum                         secondary, this is the maximum
                                   number of times a frame is
                                   retransmitted before assuming a
                                   fatal error.  When the Link is
                                   primary, this is the number of times
                                   that a retry will be tried. This
                                   attribute is settable only when the
                                   Link is disabled. The default is 15.

   Poll Pause      (0-60000)       The time in milliseconds to pause
                                   when the end of the polling list is
                                   reached. Used only when the Link is
                                   primary. The default is 200.

   Service         (1-255)         Specifies the maximum number of
   Limit                           regular scans of the Service Order
                                   Table for secondary Stations that
                                   will be made before a special scan
                                   is made.  Used when the Link is
                                   primary.  Is settable only when the
                                   Link is disabled.  The default is 4.
                                   Not used at this time.

   TWA Send        no | yes        Specifies whether the Link provides
   Priority                        priority for outbound services when
                                   configured for  Two-Way Alternating
                                   (half-duplex) data transfer in the
                                   multipoint primary mode.  Yes
                                   means that PIUs that arrive for
                                   transmission while data is being
                                   received are transmitted immediately.
                                   No, the default, means that outbound
                                   transmission is strictly determined
                                   by the position of station service
                                   order entries in the service order
                                   table.

                                   This attribute is not relevant to
                                   SDLC point-to-point operations. This
                                   attribute is settable only when the
                                   Link is disabled. Not used at this
                                   time.
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