7-8 Chapter 7
T25 (Data Packet Retransmission Timer) - Specifies the amount of time, in seconds, that the DTE waits for the appropriate acknowledgment after transmitting a data packet. If the T25 timer expires, the packet layer resets the virtual circuit.
T26 (Interrupt Timer) - Specifies the amount of time, in seconds, that the DTE waits when an Interrupt Request packet is sent for an interrupt confirmation to be received. If the T26 timer expires, the packet layer resets the virtual circuit.
R20 (Restart Retransmission Timer) - Specifies the maximum number of times the local DTE retransmits, upon expiration of the T20 timer, before notifying the user that the associated link is inoperative.
R22 (Restart Retransmission Counter) - Determines the maximum number of times the local DTE retransmits a Reset Request packet, upon expiration of the T22 timer, before initiating a Clear procedure for SVC or a Restart procedure for PVC.
R23 (Clear Retransmission Count) - Determines the maximum number of times the local DTE retransmits a Clear Request packet upon expiration of the T23 timer, before initiating a Restart procedure on the associated link.
Logical Channel Numbers
PVC, Lowest LCN - Determines the lowest LCN used for a PVC.
PVC, Number of LCNs - Determines the number of logical channels supporting PVCs. This number must agree with your network subscription.
Inbound SVC, Lowest LCN - Determines the lowest LCN that can be used for
Inbound SVC, Number of LCNs - Determines the number of incoming channels assigned for
This number must agree with your network subscription.
Two Way SVC, Lowest LCN - Determines the lowest number of two- way channels assigned for SVCs that can be used for both inbound and outbound calls.
