An OSI transport template entity provides a collection of characteristics that supply default values for certain parameters that influence the operation of a port on a transport connection. One template, with the reserved identifier default, is automatically created when the osi transport entity is created. This template is used by default when a user does not specify a template identifier in a call to establish a connection. The default template is automatically deleted when the osi transport entity is deleted. Similarly, the initial values of the attributes in a template are the same as the current values in the default template.
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ACKNOWLEDGMENT DELAY TIME Default: 1 Value: 0-65 Maximum amount of time, in seconds, that an AK TPDU is to be withheld. This attribute is valid for protocol class 4 only. CHECKSUMS Default: False Value: Boolean Specifies whether the use of checksums should be negotiated for a transport connection. This attribute is valid for protocol class 4 only. CONS TEMPLATE Default: OSI Transport Value: Simple-name Name of the X.25 Access module template to be used when establishing a network connection over the CONS. Used only when the value of the network service attribute is cons. CR TIMEOUT Default: 30 Value: 1 - ( 2 to the 23rd) During connection establishment, the amount of time, in seconds, to wait for a response to a CR TPDU before assuming that the remote transport service provider will not respond. This attribute is valid for protocol classes 0 and 2 only. ER TIMEOUT Default: 30 Value: 1 - ( 2 to the 23rd) The amount of time, in seconds, to wait for a response to an ER TPDU before disconnecting the network connection. This attribute is used for protocol classes 0 and 2 only. EXPEDITED DATA Default: True Value: Boolean Specifies whether use of the expedited data option should be negotiated for the transport connections. This attribute is not valid for protocol class 0. EXTENDED FORMAT Default: None Value: Boolean Specifies whether the use of extended TPDU format should be negotiated for the transport connections. Normal format gives 7-bit sequence numbers and 4-bit credit fields; extended format gives 31-bit sequence numbers and 16-bit credit fields. This attribute is supported only for class 2 and class 4 protocols. INBOUND Default: True Value: Boolean Indicates whether this template may be used as the template for an inbound transport connection. The algorithm of selection of the inbound template is different depending on the type of network service over which the transport connection is made. If an inbound template cannot be found for an inbound transport connection, then the template called default will be selected as the default. For the CLNS network service, the inbound template selected is the first template found that has the Inbound attribute set to true, the Network Service attribute set to CLNS, and the CLNS Inactive Area Address attribute set to empty set. For the CLNS network service using the inactive subset, that is, null internet, the incoming template selected is the first template found that has the Inbound attribute set to True, the Network Service attribute set to CLNS and the CLNS Inactive Area Address attribute matches the Inactive Area Address attribute of the Routing Circuit entity that the transport connection is using. For the CONS network service, the inbound template selected is the first template found that has the inbound attribute set to true, the network service attribute set to CONS and the CONS template attribute that is, an X.25 Access template name matches the name of the X.25 Access filter that was used to accept the inbound network connection. INITIAL RETRANSMIT TIME Default: 5 Value: 1 - ( 2 to the 23rd ) Amount of time, in seconds, to wait for an acknowledgment before retransmitting the first TPDU over the transport connection. KEEPALIVE TIME Default: 60 Value: 1 - 6383 Time, in seconds, to be used for the window timer. When the transport service provider has no TPDUs to send over a transport connection, it retransmits the last AK TPDU at the specified frequency to prevent expiration of the remote NSAP's inactivity timer. This attribute is valid for protocol class 4 only. LOCAL NSAP Default: system dependent Value: NSAP address A local NSAP address to be used by default if one is not supplied across the service interface. MAXIMUM NSDU SIZE Default: 2048 Value: 2048 When operating over the CONS, the maximum NSDU size to use for transmit and receive buffers. Expressed as a number of octets. NETWORK SERVICE Default: CLNS Value: any, CLNS, or CONS Type of network service. The network service chosen must be compatible with the value of the protocol class attribute. ANY - Either. CLNS - Connectionless Network Service. CONS - Connection-Oriented Network Service. RETRANSMIT THRESHOLD Default: 8 Value: 0 - ( 2 to the 23rd ) Number of times a TPDU requiring acknowledgment is to be retransmitted before it is assumed that network connectivity has failed. This attribute is valid for protocol class 4 only. SECURITY Default: Null Value Value: Octet String An octet string to be transmitted in the security parameter of a CR or CC TPDU. A null value causes the security parameter to be omitted from the TPDU. For security reasons, this attribute cannot be displayed. SEND IMPLEMENTATION ID Default: True Value: Boolean Indicates whether the implementation id should be sent in the CR if the proposed protocol class is 2 or 4. It is always returned in the CC if it is present in the CR. SEND PREFERRED MAXIMUM TPDU SIZE Default: True Value: Boolean Indicates whether the preferred maximum TPDU size parameter should be sent in the CR TPDU. If the preferred maximum TPDU size parameter was present in the CR TPDU, then it indicates whether the preferred maximum TPDU size parameter should be sent in the CC TPDU. The default value of this characteristic should not be changed unless the remote implementation does not conform to ISO 8073. SEND REQUEST ACKNOWLEDGMENT Default: True Value: Boolean Indicates whether the request acknowledgment parameter should be sent in the CR TPDU. If the request acknowledgment parameter was present in the CR TPDU, then it indicates whether the request acknowledgment parameter should be sent in the CC TPDU. The default of this characteristic should not be changed unless the remote implementation does not conform to ISO 8073. USE CLNS ERROR REPORTS Default: False Value: Boolean Indicates whether the network Routing layer's error report facility should be used when performing connection establishment. If set to true, this may result in faster detection of an unreachable node at the time of connection establishment. This characteristic should not be set to true on an end system that is either dual-railed or connected to a network that has a high probability of duplication. This is valid only if network service equals CLNS.