OSI/TS Management Programming Manual

ALTER SERVICE Command
Commands and Responses
056786 Tandem Computers Incorporated 5–51
ZMULTIPLEX
specifies whether more than one outgoing transport connection is mapped to
one network connection (ZSPI-VAL-TRUE) or not (ZSPI-VAL-FALSE). The
default value is ZSPI-VAL-FALSE. To be able to multiplex, two or more
subdevices must have ZMULTIPLEX ON (ZSPI-VAL-TRUE) and have the
same local and remote NSAPs. If these conditions are met, the maximum
number of outgoing transport connections that are multiplexed together is
determined by the value of the Layer 3 service attribute ZX25NCON-
MULTIPLEX. This attribute is valid only when ZCLASS is ZOS4-VAL-
CLASS-2, ZOS4-VAL-CLASS-3, or ZOS4-VAL-CLASS-4. This attribute is used
only for outgoing connections on X.25 networks.
ZEXPEDITED
controls transport expedited data transfer. This field is applicable only for
protocol class 1, 2, 3, or 4 communication. If set to ZSPI-VAL-TRUE,
expedited data transfer service is supported; if set to ZSPI-VAL-FALSE, it is
not supported. The default value is ZSPI-VAL-FALSE.
ZREXMIT-TIMEOUT
specifies the time, in units of 0.01 seconds, before which an unacknowledged
TPDU is retransmitted. Acceptable values range from 100 (1 second) through
3000 (30 seconds), with a default value of 1000 (10 seconds). This parameter is
applicable only for protocol class 4.
ZREF-TIMEOUT
specifies the time, in units of 0.01 seconds, that the transport entity waits
before reusing any reference or sequence number. Acceptable values range
from 300 (3 seconds) through 18000 (180 seconds), with a default value of 300
(30 seconds).
ZMAX-REXMIT
is the maximum number of times unacknowledged TPDUs are retransmitted
before the connection is terminated. This field is applicable only for protocol
class 4 communication. The values range from 1 through 8. The default value
is 3.
ZINACTV-TIMEOUT
is the maximum amount of time that the transport entity should wait without
receiving any TPDUs before terminating the connection. This field is
applicable only for protocol class 4 communication. The waiting time is
expressed in hundredths of a second (0.01 seconds per increment). The values
range from 100 (1 second) through 5000 (50 seconds). The default value is
3000 (30 seconds).