OSI/AS Management Programming Manual

INFO SERVICE Command
Commands and Responses
056785 Tandem Computers Incorporated 5–149
communication. Note that not all transport protocol implementations support
this attribute. The field can contain any ASCII string of up to 16 characters.
ZTCON-PRI
specifies the Layer 4 connection priority to be used when transport
connections are reassigned. However, because an agreement has not yet been
reached among the implementors concerning this attribute, Tandem OSI does
not currently process this field.
ZL4-WIN
has different meanings, depending on the transport class of service. If the
negotiated transport service protocol class is class 1, this field specifies the
number of data transport protocol data units (DT-TPDUs) that can be received
before an acknowledgment is required. To avoid potential deadlocks, this
value must be equal to the Layer 4 window size for the remote application.
If the negotiated transport service protocol class is class 2, 3, or 4, this field
specifies the number of DT-TPDUs that can be sent by the remote transport
entity without waiting for an acknowledgment (in other words, it specifies the
initial credit allocation used by the remote transport entity).
The range of values for ZL4-WIN is 0 through 15. ZL4-WIN is not applicable
for class 0.
ZNETTYPE
is the quality of network service. The values for this field are as follows:
ZOSI-VAL-NETTYPE-A
The network connection has an acceptable residual error rate, not signaled
by disconnects or resets, and has an acceptable rate of signaled errors.
ZOSI-VAL-NETTYPE-B
The network connection has an acceptable residual error rate, not signaled
by disconnects or resets, but has an unacceptable rate of signaled errors.
ZOSI-VAL-NETTYPE-C
The network connection has an unacceptable residual error rate.
ZCLASS
is the preferred transport protocol class to be used. The values for this field
are as follows:
ZOSI-VAL-CLASS-0
ZOSI-VAL-CLASS-1
ZOSI-VAL-CLASS-2
ZOSI-VAL-CLASS-3
ZOSI-VAL-CLASS-4