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This chapter describes the function and displays the syntax for the commands to configure ISDN basic rate interfaces for dial-up solutions. For more information about defaults and usage guidelines, see the corresponding chapter of the Dial Solutions Command Reference.
To configure a Basic Rate Interface (BRI) interface and enter interface configuration mode, use the interface bri global configuration command.
interface bri number| number | Port, connector, or interface card number. The numbers are assigned at the factory at the time of installation or when added to a system, and can be displayed with the show interfaces command. |
| slot/port | Backplane slot number and port number on the interface. See your hardware installation manual for the specific slot and port numbers. |
| .subinterface-number | Subinterface number in the range 1 to 4294967293. The number or slot/port that precedes the period (.) must match that of the interface this subinterface belongs to. |
| multipoint | point-to-point | (Optional) Specifies a multipoint or point-to-point subinterface. The default is multipoint. |
To have the router verify a called-party number or subaddress number in the incoming setup message for ISDN BRI calls, if the number is delivered by the switch, use the isdn answer1 interface configuration command. To remove the verification request, use the no form of this command.
isdn answer1 [called-party-number][:subaddress]| called-party-number | (Optional) Telephone number of the called party. At least one value--called-party-number or subaddress--must be specified. |
| : | Identifies the number that follows as a subaddress. Use the colon (:) when you configure both the called party number and the subaddress, or when you configure only the subaddress. |
| subaddress | (Optional) Subaddress number, 20 or fewer characters long, used for ISDN multipoint connections. At least one value--called-party-number or subaddress--must be specified. |
To configure ISDN caller ID screening, use the isdn caller interface configuration command. To disable this feature, use the no form of this command.
isdn caller number| number | Telephone number for which to screen. Specify an x to represent a single "don't-care" character. The maximum length of each number is 25 characters. |
To configure an ISDN BRI interface to present a billing number of the device making the outgoing call, use the isdn calling-number interface configuration command. To remove a previously configured calling number, use the no form of this command.
isdn calling-number calling-number| calling-number | Number of the device making the outgoing call; only one entry is allowed, and it is limited to 16 digits. |
To specify the time delay between successive attempts to dial out to a number, use the isdn fast-rollover-delay interface configuration command.
isdn fast-rollover-delay seconds| seconds | Number of seconds to delay before dialing the next dialer map after receiving an ISDN message indicating the current call will not succeed. |
To answer incoming voice calls at a configured rate (overriding the incoming data rate in the call), use the isdn incoming-voice interface configuration command.
isdn incoming-voice data [56 | 64]| 56 | Answers all voice calls at 56 kbps. |
| 64 | Answers all voice calls at 64 kbps. |
For incoming calls, to override the speed that the network reports it will use to deliver the call data, use the isdn not-end-to-end interface configuration command.
isdn not-end-to-end {56 | 64}| 56 | Answers all voice calls at 56 kbps. |
| 64 | Answers all voice calls at 64 kbps. |
To specify that the Sending Complete information element (IE) is included in the outgoing Setup message, use the isdn sending-complete interface configuration command.
isdn sending-completeUse the isdn spid1 interface configuration command to define at the router the service profile identifier (SPID) number that has been assigned by the ISDN service provider for the B1 channel. Use the no form of this command to disable the specified SPID, thereby preventing access to the switch.
isdn spid1 spid-number [ldn]| spid-number | Number identifying the service to which you have subscribed. This value is assigned by the ISDN service provider and is usually a 10-digit telephone number with some extra digits. |
| ldn | (Optional) Local directory number (LDN), as delivered by the service provider in the incoming setup message. This is a 7-digit number assigned by the service provider.
If you include the local directory number in the no form of this command, access to the switch is permitted, but the other B channel may not be able to receive incoming calls. |
Use the isdn spid2 interface configuration command to define at the router the SPID number that has been assigned by the ISDN service provider for the B2 channel. Use the no form of this command to disable the specified SPID, thereby preventing access to the switch.
isdn spid2 spid-number [ldn]| spid-number | Number identifying the service to which you have subscribed. This value is assigned by the ISDN service provider and is usually a 10-digit telephone number with some extra digits. |
| ldn | (Optional) Local directory number, as delivered by the service provider in the incoming setup message. This is a 7-digit number also assigned by the service provider.
If you include the LDN in the no form of this command, the access to the switch is permitted, but the other B channel might not be able to receive incoming calls. |
To specify the central office switch type on the ISDN interface, use the isdn switch-type global configuration command.
isdn switch-type switch-type| switch-type | Service provider switch type. |
To configure when ISDN Layer 2 terminal endpoint identifier (TEI) negotiation should occur, use the isdn tei global configuration command. Use the no form of this command to restore the default.
isdn tei [first-call | powerup]| first-call | (Optional) ISDN TEI negotiation occurs when the first ISDN call is placed or received. |
| powerup | (Optional) ISDN TEI negotiation occurs when the router is powered on. |
To delay a National ISDN (NI-1) BRI switch a random time before activating the Layer 2 interface when the switch starts up, use the isdn twait-disable interface configuration command.
isdn twait-disableTo display information about the ISDN Basic Rate Interface (BRI), use the show controllers bri privileged EXEC command.
show controllers bri number| number | Interface number. The value is 0 through 7 if the router has one 8-port BRI network interface module (NIM), or 0 through 15 if the router has two 8-port BRI NIMs. |
| slot/port | Backplane slot number and port number on the interface. See your hardware installation manual for the specific slot and port numbers. |
To display general diagnostic information for ISDN BRI interfaces configured for DDR, use the show dialer interface bri EXEC command.
show dialer interface bri number| number | (Optional) BRI interface number. |
Use the show interfaces bri privileged EXEC command to display information about the BRI D channel or about one or more B channels.
show interfaces bri number[[:bchannel] | [first] [last]] [accounting]| number | Interface number. The value is 0 through 7 if the router has one 8-port BRI NIM, or 0 through 15 if the router has two 8-port BRI NIMs. Specifying just the number will display the D channel for that BRI interface. |
| slot/port | On the Cisco 7200 series, slot location and port number of the interface. |
| :bchannel | (Optional) Colon (:) followed by a specific B channel number. |
| first | (Optional) Specifies the first of the B channels; the value can be either 1 or 2. |
| last | (Optional) Specifies the last of the B channels; the value can only be 2, indicating B channels 1 and 2. |
| accounting | (Optional) Displays the number of packets of each protocol type that have been sent through the interface. |
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}| 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. |
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