Command Reference Guide

100 ● display isdn call-info 3Com Router 5000 Family and Router 6000 Family
Command Reference
display isdn call-info
Purpose Use the display isdn call-info command to view the current states of ISDN
interfaces.
Syntax display isdn call-info [ interface type number ]
Parameters interface type number
Interface type and number.
Example Display the current state of ISDN interface 2/0/0.
<3Com> display isdn call-info interface bri 2/0/0
Bri 2/0/0(User-side): ACTIVE
Link Layer 1: TEI = 65, State = MULTIPLE_FRAME_ESTABLISHED
Link Layer 2: TEI = NONE, State = TEI_UNASSIGNED
Link Layer 3: TEI = NONE, State = TEI_UNASSIGNED
Link Layer 4: TEI = NONE, State = TEI_UNASSIGNED
Link Layer 5: TEI = NONE, State = TEI_UNASSIGNED
Link Layer 6: TEI = NONE, State = TEI_UNASSIGNED
Link Layer 7: TEI = NONE, State = TEI_UNASSIGNED
Link Layer 8: TEI = NONE, State = TEI_UNASSIGNED
Network Layer: 1 connection(s)
Connection 1 :
CCIndex:0x0055 , State: Active , CES:1 , Channel:0x00000001
TEI: 65
Calling_Num[:Sub]:
Called_Num[:Sub]: 6688164
Table 1 Description on the fields of the display isdn call-info command
Field Description
Bri2/0/0(User-side): ACTIVE Interface Bri2/0/0 is operating at the user side of ISDN; the D
channel is active
Link Layer 1
…
Link Layer 8
Connections 1 through 8 at layer 2 of the BRI interface
TEI Terminal equipment identifier
State Current state of the layer 2 link. It can be one of the following:
TEI_UNASSIGNED
ASSIGN_AWAITING_TEI
ESTABLISH_AWAITING_TEI
TEI_ASSIGNED
AWAITING_ESTABLISHMENT
AWAITING_RELEASE
MULTIPLE_FRAME_ESTABLISHED
TIMER_RECOVER
TEI_ASSIGNED_EXT1: a state option for TBR3 test, meaning a
deactivation instruction is received from the underlying layer
TEI_ASSIGNED_EXT2: a state option for TBR3 test, meaning link
establishment request is received