To display the information about calls, history, memory, status, and Layer 2 and Layer 3 timers , use the show isdn EXEC command.
show isdn {active | history | memory | status [dsl | interface-type number] | timers}
Syntax Description
active Displays current call information, including called number, the time until the call is disconnected, AOC charging units used during the call, and whether the AOC information is provided during calls or at end of calls. history Displays historic and current call information, including the called number, the time until the call is disconnected, AOC charging time units used during the call, and whether the AOC information is provided during calls or at the end of calls. memory Displays memory pool statistics. This keyword is for use by technical development staff only. status [dsl | interface-type number] Displays the status of all ISDN interfaces or, optionally, a specific digital signal link (DSL) or a specific ISDN interface. Values of dsl range from 0 to 15. Interface-type can be bri or serial. timers Displays the values of Layer 2 and Layer 3 timers. Command Mode
EXEC
Sample Displays
The following is sample output from the show isdn active command:
Router# show isdn active ------------------------------------------------------------------------------- ISDN ACTIVE CALLS ------------------------------------------------------------------------------- History Table MaxLength = 320 entries History Retain Timer = 15 Minutes ------------------------------------------------------------------------------- Call Calling Called Duration Remote Time until Recorded Charges Type Number Number Seconds Name Disconnect Units/Currency ------------------------------------------------------------------------------- Out 9876543222 Active(10) idacom 11 u(E) Out 9876543210 Active(34) idacom 115 5 u(D) -------------------------------------------------------------------------------The following is sample output from the show isdn history command:
Router# show isdn history ------------------------------------------------------------------------------- ISDN CALL HISTORY ------------------------------------------------------------------------------- History Table MaxLength = 320 entries History Retain Timer = 15 Minutes ------------------------------------------------------------------------------- Call Calling Called Duration Remote Time until Recorded Charges Type Number Number Seconds Name Disconnect Units/Currency ------------------------------------------------------------------------------- Out 47887654 240 blackcanary 5 u(D) In 67893 90 delorean Out 56745678 Active(90) blackcanary 240 13 u(D) -------------------------------------------------------------------------------Table 34 describes the fields in the show isdn active and show isdn history output displays.
Table 34 : Show ISDN Active and Show ISDN History Field Descriptions
Field Description History Table MaxLength Maximum number of entries that can be retained in the Call History table. History Retain Timer Maximum number of seconds any entry can be retained in Call History table. Call Type Type of call: incoming or outgoing. Calling Number For incoming calls, the number from which the call was received. Called Number For outgoing calls, the number to which the call was placed. Duration Seconds Number of seconds the call lasted. Indicates whether the call is still active, and how many seconds it has lasted so far. Remote Name Name of the host placing the call or the host called. Time until Disconnect Number of seconds before the call is configured to disconnect because of the static idle timer for the map class or the interface. Recorded Charges Units/Currency For outgoing calls, number of ISDN AOC charging units used or the currency cost of the call. The following is sample output from the show isdn timers command:
Router# show isdn timers ISDN Layer 2 values: K = 0 outstanding I-frames N200 = 0 max number of retransmits T200 = 0 seconds T202 = 2 seconds T203 = 0 seconds ISDN Layer 3 values: T303 = 0 seconds T305 = 0 seconds T308 = 0 seconds T310 = 0 seconds T313 = 0 seconds T316 = 0 seconds T318 = 0 seconds T319 = 0 secondsTable 35 displays some typical values of the timers shown in the show isdn timers display. The values of the timers depend on the switch type and typically are used only for homologation purposes. See the Q.921 specifications for detailed technical definitions of the Layer 2 timers; see the Q.931 specifications for detailed technical definitions of the Layer 3 timers.
Table 35 : Show ISDN Timers Command Output
Field Typical Value ISDN Layer 2 values: K = 0 outstanding I-frames 1 N200 = 0 max number of retransmits 3 T200 = 0 seconds 1 T202 = 2 seconds 2 T203 = 0 seconds 10 ISDN Layer 3 values: T303 = 0 seconds 4 T305 = 0 seconds 30 T308 = 0 seconds 4 T310 = 0 seconds 40 T313 = 0 seconds 0 T316 = 0 seconds 4 T318 = 0 seconds 4 T319 = 0 seconds 4 The following is sample output from the show isdn status command when no calls are active:
Router# show isdn status The current ISDN Switchtype = basic-5ess ISDN BRI0 interface Layer 1 Status: ACTIVE Layer 2 Status: TEI = 65, State = MULTIPLE_FRAME_ESTABLISHED Spid Status: TEI 65, ces = 1, state = 5(init) spid1 configured, no LDN, spid1 sent, spid1 valid Endpoint ID Info: epsf = 0, usid = 3, tid = 7F Layer 3 Status: 0 Active Layer 3 Call(s) Activated dsl 0 CCBs = 0 Number of active calls = 0 Number of available B-channels = 2 Total Allocated ISDN CCBs = 0The following is sample output from the show isdn status command with 1 active call:
Router#show isdn statusThe current ISDN Switchtype = ntt ISDN BRI0 interface Layer 1 Status: ACTIVE Layer 2 Status: TEI = 64, State = MULTIPLE_FRAME_ESTABLISHED Layer 3 Status: 1 Active Layer 3 Call(s) Activated dsl 0 CCBs = 1 CCB:callid=8003, callref=0, sapi=0, ces=1, B-chan=1 Number of active calls = 1 Number of available B-channels = 1 Total Allocated ISDN CCBs = 1Table 36 describes the fields in the show isdn status command output.
Table 36 Show ISDN Status Field Descriptions Field Description Layer 1 Status ACTIVE Status of ISDN Layer 1. Layer 2 Status TEI = 65, State = MULTIPLE_FRAME_ESTABLISHED Status of ISDN Layer 2. Terminal endpoint identifier number and multiframe structure state. Spid Status TEI 65, ces = 1, state = 5(init) Terminal endpoint identifier number, ___ces__??? What was initialized--- the spid?? spid1 configured, no LDN, spid1 sent, spid1 valid SPID configuration information. For example, local directory number is defined. Endpoint ID Info: epsf = 0, usid = 3, tid = 7F Endpoint identifier information. Layer 3 Status: 1 Active Layer 3 Call(s) Number of active calls. Activated dsl 0 CCBs = Number of the Digital Signal Link activated. Number of call control blocks in use. CCB:callid=8003, callref=0, sapi=0, ces=1, B-chan=1 Information about the active call. Number of active calls = Number of active calls. Number of available B-channels = Number of B channels that are not being used. Total Allocated ISDN CCBs = Number of ISDN call control blocks that are allocated.