Command Reference Guide

3Com Router 5000 Family and Router 6000 Family display isdn parameters ● 103
Command Reference
display isdn parameters
Purpose Use the display isdn parameters command to view the system parameters at
layers 2 and 3 of the ISDN protocol, such as the durations of system timers and frame
size.
Syntax display isdn parameters { protocol | interface type number }
Parameters protocol
ISDN protocol type, which can be DSS1, NTT, NI, NI2,
QSIG, ETSI, ANSI or AT&T.
interface type number
ISDN interface type and number.
Example Display the system parameters of the ISDN protocol DSS1.
[3Com] display isdn parameters dss1
DSS1 ISDN layer 2 system parameters:
T200(sec) T201(sec) T202(sec) T203(sec) N200 K(Bri)
K(Pri)
1 1 2 10 3 1 7
DSS1 ISDN layer 3 system timers(default value):
Timer-Number Value(sec)
T301 240
T302 15
T303 4
T304 30
T305 30
T308 4
T309 90
T310 40
T313 4
T314 4
T316 120
T317 10
T318 4
T319 4
T321 30
T322 4
Table 1 Description of the fields of the display isdn parameters command
Item Description
T200(sec) Retransmit-timer (in seconds) of the L2 protocol of ISDN
T201(sec) TEI test request retransmit-timer (in seconds) of the L2 protocol of
ISDN
T202(sec) TEI request retransmit-timer (in seconds) of the ISDN L2 protocol
T203(sec) The maximum link idle time (in seconds) of the ISDN L2 protocol
N200 The maximum number of retransmissions
K(Bri) The maximum number of unacknowledged frames (slide window
size) on the ISDN BRI port