Box if ISDN devices are having problems establishing connections:. AVM Content. Box Box LTE. Connect the gray end of the Y-shaped cable to the DSL line. Box yet. Box user interface. Click "Backup" in the "System" menu. Click on the "Restart" tab.
Click the "Restart" button. Click "Telephone Numbers" in the "Telephony" menu. Click on the "Line Settings" tab. Enable the option "Landline enabled". Click "Apply" to save the settings. Click the "New Telephone Number" button. If dialing cannot occur, use the debug isdn q command to check the ISDN configuration. Table 2 on page 9 shows a list of switch types. You can configure all interfaces at once by using this command in global configuration mode.
Or you can configure one interface at a time by using this command in interface configuration mode. Configures card type T1 or E1 at the specified slot.
Maximum T1 range: Maximum E1 range: Set up each channel for either user side or network side. Conditions that apply to this command in global configuration mode also apply in interface configuration mode. For this interface, this interface configuration command overrides the setting of the isdn switch-type command entered in global configuration mode. E1 only Sets contiguous bearer-channel handling, causing B channels 1 to 30 to map to timeslots 1 to 31, skipping timeslot User side only Configures Layer 2 and Layer 3 port mode emulation and clock status for the user--that is, the TE clock slave.
This is the default. Network side only Configures Layer 2 and Layer 3 port mode emulation and clock status for the network--that is, the NT clock master.
On the Cisco MC, the isdn protocol-emulate command replaces the isdn switch-type command. The interface waits for possible additional call-control information from the preceding PBX. You can leave the default mode of enbloc , in which all call-setup information is sent in the setup message without need for additional messages from the preceding PINX.
Optional Specifies the cause code to pass to the PBX when a call cannot be placed or completed because of internal network failures. Set up each interface for either user side or network side. This command is required. In previous releases, it was set automatically with use of the isdn switch-type basic-qsig command. Cisco MC Only. Configures Layer 1 port mode emulation and clock status for the user--that is, the TE clock slave.
Configures Layer 1 port mode emulation and clock status for the network--that is, the NT clock master. Cisco Series and Cisco Series Only. Routes incoming voice calls. This is set for voice-capable BRI interfaces by default.
This command is used in some geographic locations, such as Hong Kong and Taiwan, where the "Sending Complete" information element is required in the outgoing call-setup message.
Optional Activates overlap signaling to send to the destination PBX and causes the interface to wait for possible additional call-control information from the preceding PINX. To verify the QSIG configuration, perform the following steps listed alphabetically. Use this command to display information about calls made to and from the router. Use this command to display information about T1 and E1 controllers.
Use this command to display how voice dial peers are configured. Use this command to display information about switch type, memory, status, and Layer 2 and Layer 3 timers. Use this command to display the state and the service status of each ISDN channel. Use this command to display information about memory leaks. Use this command to display summary information about voice-port configuration. Use the debug isdn event command to display events occurring on the user side on the router of the ISDN interface.
ISDN events that can be displayed are Q. Use the debug tsp command to display information about the telephony-service provider TSP. The following shows sample output for a PRI voice port on a Cisco series.
The following shows sample output for a T1 line not having problems. The following shows sample output for a T1 line having problems. The following shows sample output for a PRI on a T1 controller. The following shows sample output for a BRI voice port on a Cisco series. Use these commands on Cisco series and Cisco series only.
Optional Selects a service-provider switch type that accommodates PRI. You can set the ISDN switch type in either global configuration mode or interface configuration mode. Global configuration mode this step : specify the switch type for all PRI ports. Interface configuration mode: specify the switch type for a single interface.
The type specified in this mode for any individual interface overrides the type specified in global configuration mode.
Turns on the power supplied from an NT-configured port to a TE device. Routes incoming ISDN voice calls to the voice module. Configuration examples included in this section correspond to the topology shown in the figure below.
The routers each include a BRI voice interface card and a two-slot voice network module, along with other voice interface cards and modules that are included for completeness.
The following show QSIG configurations on a variety of supported routers:. Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book. PDF - Complete Book 4. Updated: February 1, Note Set up each channel for either user side or network side. Step 2 configure terminal Example: Router configure terminal Enters configuration mode.
Step 3 isdn switch-type switch-type Example: Router config isdn switch-type basic-qsig Configures the telephone-company ISDN switch type. Note The only switch types currently supported for an NT interface are basic-net3 and basic-qsig.
Step 5 no ip address Example: Router config-if no ip address Specifies that there is no IP address for this interface. Step 6 isdn overlap-receiving Example: Router config-if isdn overlap-receiving Optional Activates overlap signaling to send to the destination PBX. Step 11 shutdown Example: Router config-if shutdown Turns off the port before setting port emulation. Step 12 Do one of the following: isdn layer1-emulate user isdn layer1-emulate network Example: Router config-if isdn layer1-emulate user Example: Example: Example: Router config-if isdn layer1-emulate network User side only Configures Layer 1 port mode emulation and clock status for the user--that is, the TE clock slave.
Step 13 no shutdown Example: Router config-if no shutdown Turns on the port. Step 16 Do one of the following: isdn protocol-emulate user isdn protocol-emulate network Example: Router config-if isdn protocol-emulate user Example: Example: Example: Router config-if isdn protocol-emulate network User side only Configures Layer 2 and Layer 3 port mode emulation and clock status for the user--that is, the TE clock master.
Step 17 isdn sending-complete Example: Router config-if isdn sending-complete Optional Configures the voice port to include the "Sending Complete" information element in the outgoing call-setup message. Note A static TEI must be configured in order for this command to be effective. Step 20 exit Example: Router config-if exit Exits the current mode. Step 2 show interfaces bri Use this command to display information about the physical attributes of the BRI B and D channels.
Step 5 show isdn status Use this command to display the status of all ISDN interfaces, including active layers, timer information, and switch-type settings.
Step 6 show running-config Use this command to display basic router configuration. Examples This section provides the following output examples: Sample Output for the show running-config Command The following is sample output from a Cisco series system.
The table below describes significant fields shown in this output Router show running-config Building configuration Current configuration:! Router show running-config Building configuration The table below describes significant fields shown in these outputs. Table 1. Sample Output for the show interfaces bri Command The following shows sample output for a Cisco Significant Fields from the show interfaces bri Command Field in alpha order Description abort Illegal sequence of one bits on a serial interface.
BW Bandwidth of the interface in kbps. CRC Cyclic redundancy checksum generated by the originating station or far-end device does not match the checksum calculated from the data received. DLY Delay of the interface in microseconds. Hardware is Hardware type. Internet address is IP address and subnet mask, followed by packet size. MTU Maximum transmission unit of the interface. Step 3 isdn switch-type switch-type Example: Router config isdn switch-type basic-qsig Configures the telephone company ISDN switch type.
Step 6 framing esf Example: Router config-controller framing esf Defines the framing characteristics. Router config isdn switch-type switch-type. Selects the service provider switch type; see Table 19 for switch types. Note The command parser will still accept the following switch type keywords: basic-nwnet3 , vn2 , and basic-net3 ; however, when viewing the NVRAM configuration, the basic-net3 or vn3 switch type keywords are displayed respectively.
When configuring a BRI, after the system comes up, make sure enough buffers are in the free list of the buffer pool that matches the maximum transmission unit MTU of your BRI interface.
If not, you must reconfigure buffers in order for the BRI interfaces to function properly. Router show interfaces bri number. To configure the buffers and the MTU size, use the following commands in global configuration mode as needed:. Router config buffers big permanent number. Router config buffers big max-free number. Router config buffers big min-free number. Router config buffers big initial number. Each of the BRIs can be configured separately.
Router config interface bri number. Router config-if ip address address mask. If you are using a service provider that requires SPIDs, your ISDN device cannot place or receive calls until it sends a valid, assigned SPID to the service provider when accessing the switch to initialize the connection.
Remote routers never receive the SPID. A SPID is usually a seven-digit telephone number with some optional numbers. However, service providers may use different numbering schemes. To define the SPIDs and the local directory number LDN on the router, use the following commands in interface configuration mode as needed:.
Router config-if isdn spid1 spid-number [ ldn ]. Router config-if isdn spid2 spid-number [ ldn ]. The LDN is optional but might be necessary if the router is to answer calls made to the second directory number. To configure encapsulation, use the following command in interface configuration mode:.
Router config-if encapsulation [ ppp lapb frame-relay ]. To verify dialer interfaces configured for binding and see statistics on each physical interface bound to the dialer interface, use the show interfaces EXEC command. The following example shows that the output under the B channel keeps all hardware counts that are not displayed under any logical or virtual access interface. The line in the report that states "Interface is bound to Dialer0 Encapsulation LAPB " indicates that this B interface is bound to the dialer 0 interface and the encapsulation running over this connection is LAPB, not PPP, which is the encapsulation configured on the D interface and inherited by the B channel.
Any protocol configuration and states should be displayed from the dialer 0 interface. The router might need to communicate with devices that require a different encapsulation protocol or the router might send traffic over a Frame Relay or X. The Dynamic Multiple Encapsulations feature provides bidirectional support of all serial encapsulations except Frame Relay.
To configure the router for automatic detection of encapsulation type on incoming calls, or to configure encapsulation for Cisco and series formerly Combinet router compatibility, see the section "Configuring Automatic Detection of Encapsulation Type" in the chapter "Configuring ISDN Special Signaling" later in this publication. Intermediate steps that use shared argument values tie the host identification and dial string to the interesting packets to be sent to that host. To configure network addressing, use the following commands beginning in interface configuration mode:.
Router config-if dialer map protocol next-hop-address name hostname speed [ 56 64 ] dial-string [ : isdn-subaddress ]. Router config-if dialer map protocol next-hop-address name hostname spc [ speed 56 64 ] [ broadcast ] dial-string [ : isdn-subaddress ]. Most locations Configures a serial interface or ISDN interface to call one or multiple sites or to receive calls from multiple sites.
Router config-if dialer-group group-number. Defines a dial-on-demand routing DDR dialer list for dialing by protocol or by a combination of a protocol and an access list. Defines an access list permitting or denying access to specified protocols, sources, or destinations.
Permitted packets cause the router to place a call to the destination protocol address. German networks allow semipermanent connections between customer routers with BRIs and the 1TR6 basic rate switches in the exchange. Semipermanent connections are less expensive than leased lines.
Note The access list reference in Step 5 of this task is an example of the access-list commands allowed by different protocols. Some protocols might require a different command form or might require multiple commands. Refer to the relevant protocol chapter in the network protocol configuration guide the Cisco IOS Novell IPX Configuration Guide , for example for more information about setting up access lists for a protocol.
TEI negotiation is useful for switches that may deactivate Layers 1 or 2 when there are no active calls. By default, TEI negotiation occurs when the router is powered up. For example, if you configure isdn tei first-call globally and isdn tei powerup on BRI interface 0, then TEI negotiation powerup is the value applied to BRI interface 0. It is not necessary to configure TEI negotiation unless you wish to override the default value isdn tei powerup. Router config-if isdn tei [ first-call powerup ].
CLI screening adds a level of security by allowing you to screen incoming calls. You can verify that the calling line ID is from an expected origin. To configure CLI screening, use the following command in interface configuration mode:. Router config-if isdn caller number. Note If caller ID screening is configured and the local switch does not deliver caller IDs, the router rejects all calls.
The new screening process also checks that enough resources are available to accept the call and that the call conforms to predetermined rules. When the call is found acceptable, the screening process searches for a matching profile for the caller. The call is accepted only when there is a matching profile.
When multiple devices are attached to an ISDN BRI, you can ensure that only a single device answers an incoming call by verifying the number or subaddress in the incoming call against the configured number or subaddress or both of the device.
You can specify that 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.
You can do so by configuring the number that is allowed. To configure verification, use the following command in interface configuration mode:. Router config-if isdn answer1 [ called-party-number ][ : subaddress ].
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