3Com Router 3031, Command Reference Manual

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266 C
HAPTER
4: L
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L
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ROTOCOL
B2 Analog In 8810118 380 8810150 2201
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display isdn call-info Syntax
display isdn call-info [ interface type number ]
View
Any view
Parameter
interface type number: Interface type and number.
Description
Using the display isdn call-info command, you can view the current states of ISDN
interfaces. If no interface has been specified, the system will display the current
states of all the ISDN interfaces.
Executing this command will output the state of each layer of the ISDN protocol
on one or all interfaces, including the information of Q.921, Q.931 and CC
modules. You may make troubleshooting based on the output information.
For the related command, see display interfaces.
Example
Display the current states of all ISDN interfaces.
[3Com]display isdn call-info
Bri0/0/0:
Link Layer: TEI = NONE, State = TEI_UNASSIGNED
Network Layer: 0 connection(s)
Serial0/0/0:15:
Link Layer: TEI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Network Layer: 1 connection(s)
Connection 1:
CCIndex: 0x0000, State: Active, CES: 1, Channel: 0x00000002
Calling_Num[:Sub]: 003
Called_Num[:Sub]: 002
Table 7 Description of the information displayed by executing display isdn call-info
Item Description
Bri0/0/0 The interface Bri0/0/0 runs ISDN.
Link Layer: TEI = 0, State =
MULTIPLE_FRAME_ESTABLISHED Displays the parameters related to the link layer
protocol Q.921 of ISDN on the interface.
Network Layer: 1 connection(s) There is only one network layer connection on
the interface currently.
CCIndex Call index
State Call state
Channel Channel map
Calling_Num[:Sub] Calling number: calling sub-address
Called_Num[:Sub] Called number: called sub-address