Eicon Networks 1530 - Manual (Page 89)

Web Interface Settings Glossary 89
Protocol Menu (VHSI Tree) > Timers Group (when
protocol is set to X.25)
These parameters are only available when the protocol is set to X.25.
T20 - Packet Level Restart Timer (Timers Group)
The Packet Level Restart timer is started when a Restart Request packet is sent. It is stopped
when a Restart Confirm or Restart Request packet is received. On expiration, the Packet Level
interface is closed.
Range: 0-999 seconds. Default: 60.
T21- Call Supervision Timer (Timers Group)
The Call Supervision timer is started when a Call Request packet is sent. It is stopped when a
Call Accepted or Call Cleared packet is received. On expiration, a Clear Request packet is sent.
Range: 0-999 seconds. Default: 60.
T22 - Reset Supervision timer (Timers Group)
The Reset Supervision timer is started when a Reset Request packet is sent. It is stopped when
a Reset Confirmed or Reset Request packet is received. On expiration, the Reset Request
packet is retransmitted.
T23 - Clear Supervision Timer (Timers Group)
The Clear Supervision timer is started when a Clear Request packet is sent. It is stopped when a
Clear Indication or Clear Confirmation is received. On expiration, the Clear Request packet is
retransmitted.
Range: 0 to 999 seconds. Default: 60.
Acknowledge Timer (Timers Group)
Defines the Acknowledge timer, which is how long, in milliseconds, the line can remain idle
before an RR (Receiver Ready) is sent to the remote. This lets the remote know that the
connection is still active. The remote will respond with an RR.
Range: 0-9999. Default: 20.