BISYNC CODE
       Default: EBCDIC                Value: ASCII or EBCDIC

       Character code to be used on the link. This characteristic is supported
       only when the characteristic protocol is set to one of the following:
       (bisync, chips, genbyte, or swift). You can modify this characteristic
       only when the entity is disabled.

    BITS PER CHARACTER
       Default: 8                     Value:  5--8

       Number of bits in each character. This characteristic is supported only
       when the characteristic protocol is set to genbyte. You can modify this
       characteristic only when the entity is disabled.

    BUFFER SIZE
       Default: 512                   Value: 0--65535

       Size, in octets, of each receive buffer for the link. You can modify
       this characteristic only when the entity is disabled. Also, you can only
       increase the characteristic value.

    CONTROL MODE
       Default: Point-to-point        Value: See description

       Control mode in which the link is to operate. The value of this
       characteristic derives from the point to point argument to the create
       command. You cannot modify this characteristic.

       multipoint master
       multipoint tributary
       point-to-point

    CRC TYPE
       Default: See description       Value: See description

       CRC type used on the link.

         CRC_16        CRC_CCITT
         CRC_CCITT0    LRC_EVEN
         LRC_ODD       LRC_VRC_EVEN
         LRC_VRC_ODD   NONE

       The default value depends on the protocol.

          BISYNC  - CRC_16
          CHIPS   - LRC_EVEN
          DDCMP   - CRC_16
          GENBYTE - NONE
          HDLC    - CRC_CCITT
          SDLC    - CRC_CCITT
          SWIFT   - CRC_16

       genbyte crc checking is done in the genbyte framing routine.

    FRAMING TIMER
       Default: 25                   Value: 10--1000

       Maximum length of time, in milliseconds, to wait for the next character
       to arrive. This characteristic is supported only when the characteristic
       protocol is set to genbyte.

    INITIAL STATE ONE
       Default: 0                   Value:  See description

       First 32 bits of state information. This characteristic is supported
       only when the characteristic protocol is set to genbyte. You can modify
       this characteristic only when the entity is disabled.

    INITIAL STATE TWO
       Default: 0                    Value: See description

       Last 32 bits of state information. This characteristic is supported only
       when the characteristic protocol is set to genbyte. You can modify this
       characteristic only when the entity is disabled.

    LOCAL STATION ADDRESS
       Default: 255                  Value: 0--255

       Address of the local station. The default value means that only
       broadcast messages are accepted. The interpretation of this
       characteristic is controlled by the value of the characteristic match
       station address.

       This attribute is supported only if the characteristic protocol is set
       to sdlc. You can modify this characteristic only when the entity is
       disabled.

    MATCH STATION ADDRESS
       Default: False               Value:  True or False

       Specifies whether the value of the characteristic local station address
       is to be interpreted as a valid address.  This attribute is supported
       only if the characteristic protocol is set to sdlc. You can modify this
       characteristic only when the entity is disabled.

    NUMBER OF BUFFERS
       Default: 4                   Value: 0--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.

    PHYSICAL LINE
       Default: None                Value: Local-entity-name

       Name of the Physical layer line entity on which the link operates. You
       must provide a value for this characteristic before you enable the link.
       You can modify this characteristic only when the entity is disabled.

    PROTOCOL
       Framing protocol used on the line. The value of this characteristic
       derives from the protocol argument to the create command. You cannot
       modify this characteristic.

           BISYNC           HDLC
           CHIPS            SDLC
           DDCMP            SWIFT
           GENBYTE

    SYNC CHARACTER
       Default:  See description                Value: 0--FF

       Hexadecimal code of the sync character to be used on the link. The
       default value depends on the value of the characteristic protocol, as
       follows:

            BISYNC
            CHIPS
            DDCMP
            GENBYTE
            SWIFT

       This attribute is supported only if the characteristic protocol is set to
       (bisync, chips, ddcmp, genbyte, or swift). You can modify this
       characteristic only when the entity is disabled.

    SYNC COUNT
       Default: 4                          Value: 0--255

       Number of sync characters that precede each message. This attribute is
       supported only if the characteristic protocol is set to (bisync, chips,
       ddcmp, genbyte, or swift). You can modify this characteristic only when
       the entity is disabled.