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This chapter explains the function and syntax of the Cisco IOS dial services commands from IS through LAT. For more information about defaults and usage guidelines, see the corresponding chapter of the Cisco IOS Dial Services Command Reference, Release 12.1.
Syntax Description
This command has no arguments or keywords.
To have the router verify an additional 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 answer2 command in interface configuration mode. Use the no form of this command to remove this second verification request.
isdn answer2 [called-party-number][:subaddress]
Syntax Description
called-party-number (Optional) Telephone number of the called party. At least one value---called-party-number or subaddress---must be specified. The maximum number of digits for called-party-number is 50. : (Optional) 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 used for ISDN multipoint connections. At least one value---called-party-number or subaddress---must be specified. The maximum number of digits for subaddress is 50.
To enable the automatic detection of ISDN SPIDs and switch type, use the isdn autodetect command in interface configuration mode. Use the no form of this command to disable the automatic detection of ISDN SPIDs and switch type.
isdn autodetect
no isdn autodetect
Syntax Description
This command has no arguments or keywords.
To configure an ISDN PRI interface to make outgoing call selection in ascending or descending order, use the isdn bchan-number-order command in interface configuration mode. To restore the default (descending order), either use the no form of this command or simply reconfigure the interface with the new value.
isdn bchan-number-order {ascending | descending}
Syntax Description
ascending Makes the outgoing B channel selection in ascending order as follows: descending Makes the outgoing B channel selection in descending order as follows:
To set a false busy signal on an ISDN B channel, use the isdn busy command in interface configuration mode. Use the no form of this command to remove this condition.
isdn busy dsl number b_channel number
Syntax Description
dsl number Digital subscriber loop (DSL) number. b_channel number B channel or range of B channels to be set with the busy signal. B channel numbers range from 1 to 24; 0 indicates the entire interface.
To make an ISDN data call, use the isdn call interface command in privileged EXEC mode.
isdn call interface interface-number dialing-string [speed 56 | 64]
Syntax Description
interface-number Interface number. dialing-string Telephone number used for making ISDN data call. speed 56 (Optional) Line speed (56 or 64 kbps) used for making ISDN data call.
speed 64
To configure ISDN caller ID screening and optionally to enable ISDN caller ID callback for legacy dial-on-demand routing (DDR), use the isdn caller command in interface configuration mode. Use the no form of this command to disable this feature.
isdn caller phone-number [callback]
Syntax Description
phone-number Remote telephone number for which to screen. Use a letter X to represent a single "don't care" digit. The maximum length of each number is 25 digits. callback (Optional) Enables callback.
Syntax Description
calling-number Number of the device making the outgoing call; only one entry is allowed.
To activate three-way call conferencing, use the isdn conference-code command in interface configuration mode. Use the no form of this command to disable three-way call conferencing.
isdn conference-code range
no isdn conference-code
Syntax Description
range Number from 0 to 999 (ISDN conference code).
To send a specific ISDN cause code to the switch, use the isdn disconnect-cause command in interface configuration mode. Use the no form of the command to return to the default condition.
isdn disconnect-cause {cause-code-number | busy | not-available}
Syntax Description
cause-code-number Sends a cause code number (submitted as integer 1 through 127) to the switch. busy Sends the USER BUSY code to the switch. not-available Sends the CHANNEL-NOT-AVAILABLE code to the switch.
To disconnect an ISDN data call without bringing down the interface, use the isdn disconnect interface command in privileged EXEC mode.
isdn disconnect interface interface {b1 | b2 | all}
Syntax Description
interface Interface type and number, such as bri 0. b1 B channel 1. b2 B channel 2. all B channels 1 and 2.
To specify the time within which an incoming call is dropped before attempting to place the call back call, use the isdn fast-rollover-delay command in interface configuration mode. Use the no form of this command to remove or change a value.
isdn fast-rollover-delay seconds
Syntax Description
seconds Number of seconds to allow an incoming call to completely drop before placing the callback call.
To route all incoming voice calls to the modem and determine how they will be treated, use the isdn incoming-voice command in interface configuration mode. Use the no form of this command to disable the setting or return to the default.
isdn incoming-voice {voice | data [56 | 64] | modem [56 | 64]}
Syntax Description
voice Specifies that incoming voice calls bypass the modems and be handled as a voice call. data Specifies that incoming voice calls bypass the modems and be handled as digital data. If this keyword is selected, you can specify a B-channel bandwidth of either 56 kbps or 64 kbps. If no argument is entered, the default value is 64. modem Specifies that incoming voice calls are passed over to the digital modems, where they negotiate the appropriate modem connection with the far-end modem. If this keyword is selected, you can specify a B-channel bandwidth of either 56 kbps or 64 kbps. If no argument is entered, the default value is 64.
To configure the Layer 1 operation of a BRI voice port as clock master (NT) or slave (TE), use the isdn layer1-emulate command in interface configuration mode. Use the no form of this command to restore the default (user).
isdn layer1-emulate {user | network}
Syntax Description
user Physical interface operation in clock slave mode (as TE). network Physical interface operation in clock master mode (as NT).
To configure an ISDN BRI for leased-line service at 128 kbps, use the isdn leased-line bri 128 command in global configuration mode. Use the no form of the command to remove the configuration.
isdn leased-line bri number 128
Syntax Description
number BRI interface number.
To override the default ISDN type and plan generated by the router with custom values, use the isdn map command in interface configuration mode. Use the no form of this command to revert to the default ISDN type and plan.
isdn map {address address | regexp | plan plan | type type}
Syntax Description
address address Specifies the address map, which can be to either the calling or called number. regexp Specifies a regular expression for pattern matching. plan plan Specifies the ISDN numbering plan. type type Specifies the ISDN number type.
To override the speed that the network reports it will use to deliver the call data, use the isdn not-end-to-end command in interface configuration mode. Use the no form of this command to disable the configured end-to-end speed.
isdn not-end-to-end {56 | 64}
Syntax Description
56 Answers all voice calls at 56 kbps. 64 Answers all voice calls at 64 kbps.
To configure Network Specific Facilities (NSF) on an ISDN PRI for outgoing calls configured as voice calls, use the isdn nsf-service command. Use the no form of this command to remove NSF on an ISDN PRI.
isdn nsf-service {megacom | sdn}
Syntax Description
megacom Dial voice calls using AT&T Megacom NSF. sdn Dial voice calls using AT&T SDN NSF.
To set information transfer capability on outgoing calls for all switch types, use the isdn outgoing-voice command. Use the no form of this command to revert to the default state.
isdn outgoing-voice {info-transfer-capability {3.1kHz-audio | speech}}
Syntax Description
info-transfer-capability Specifies information transfer capability for voice calls. 3.1kHz-audio Sets capability to 3.1kHz audio. speech Sets capability to speech.
To specify if the ISDN interface does Overlap Receiving, use the isdn overlap-receiving command. Use the no form of this command to remove this capability.
isdn overlap-receivingSyntax Description
This command has no arguments or keywords.
To configure the Layer 2 and Layer 3 port protocol of a BRI voice port or a PRI interface to emulate NT (network) or TE (user) functionality, use the isdn protocol-emulate command in interface configuration mode. Use the no form of this command to restore the default (user).
isdn protocol-emulate {user | network}
Syntax Description
user Layer 2 and Layer 3 port protocol operation as TE (port functions as QSIG slave). network Layer 2 and Layer 3 port protocol operation as NT (port functions as QSIG master).
To specify the RLM group number that ISDN will start using, use the isdn rlm-group command in interface configuration mode. Use the no form of this command to disable this function.
isdn rlm-group number
Syntax Description
number The number of the RLM group, from 0 to 5.
Syntax Description
This command has no arguments or keywords.
Syntax Description
This command has no arguments or keywords.
To take an individual B channel or an entire PRI interface out of service or set it to a different channel service state that is passed in to the switch, use the isdn service command in interface configuration mode. use the no form of the command to remove the configuration.
isdn service dsl number b_channel number state state-value
Syntax Description
dsl number Digital subscriber loop number; displayed with the show isdn status command. b_channel number B channel or range of B channels to be set with the passed-in state value. The b_channel 0 keyword sets the entire PRI interface to a specified state value. B channel numbers range from 1 to 24. state state-value Desired channel service state to be set on the channels. The following channel service state values are supported: 0---In service 1---Maintenance 2---Out of service
To associate up to three ISDN local directory numbers (LDNs) provided by your telephone service provider to the first service profile identifier (SPID), use the isdn spid1 command in interface configuration mode.Use the no form of this command to disable the specified SPID, thereby preventing access to the switch.
isdn spid1 spid-number ldn [ldn] [ldn]To associate up to three ISDN LDNs provided by your telephone service provider to the second service SPID, use the isdn spid2 command in interface configuration mode.Use the no form of this command to disable the specified SPID, thereby preventing access to the switch.
isdn spid2 spid-number ldn [ldn] [ldn]
Syntax Description
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 additional digits such as 40855522220101. ldn (Optional) ISDN LDN, which is a 7-digit number assigned by the service provider. You can optionally specify a second and third LDN.
To specify the central office switch type on the ISDN interface, use the isdn switch-type command in global or interface configuration mode. To remove an ISDN switch type, use the no form of this command.
isdn switch-type switch-type
Syntax Description
switch-type ISDN service provider switch type. Table 7 lists the supported switch types.
| Keywords by Area | Switch Type |
|---|---|
All countries | |
none | No switch defined |
basic-qsig | PINX (PBX) switches with QSIG signalling per Q.931 |
primary-qsig | Supports QSIG signalling per Q.931 |
| Australia | |
basic-ts013 | Australian TS013 switches |
| Europe | |
basic-1tr6 | German 1TR6 ISDN switches |
basic-net3 | NET3 ISDN, Norway NET3, and New Zealand NET3 switches (covers the Euro-ISDN E-DSS1 signalling system and is ETSI-compliant) |
vn3 | French VN3 and VN4 ISDN BRI switches |
| Japan | |
ntt | Japanese NTT ISDN switches |
| North America | |
basic-5ess | AT&T basic rate switches |
basic-dms100 | Northern Telecom DMS-100 basic rate switches |
basic-ni | National ISDN switches |
To specify the central office switch type on the ISDN interface, or to configure the Cisco MC3810 PRI interface to support QSIG signalling, use the isdn switch-type global and command in interface configuration mode. Use the no form of this command to disable the switch or QSIG signalling on the ISDN interface.
isdn switch-type switch-type
Syntax Description
switch-type Service provider switch type; Table 8 lists supported switches.
| Keywords by Area | Switch Type |
none | No switch defined |
| Australia | |
primary-ts014 | Australia PRI switches |
| Europe | |
primary-net5 | European, New Zealand and Asia ISDN PRI switches (covers the Euro-ISDN E-DSS1 signalling system and is ETSI-compliant) |
| Japan | |
primary-ntt | Japanese ISDN PRI switches |
| North America | |
primary-4ess | AT&T 4ESS switch type for the North America |
primary-5ess | AT&T 5ESS switch type for the North America |
primary-dms100 | NT DMS-100 switch type for the North America |
primary-ni | National ISDN switch type |
primary-qsig-slave | Specifies the Cisco MC3810 router or the interface to act as the primary QSIG slave when the PINX is the primary QSIG master. |
primary-qsig-master | Specifies the Cisco MC3810 router or the interface to act as the primary QSIG slave when the PINX is the primary QSIG master. |
To configure when Layer 2 becomes active and ISDN terminal endpoint identifier (TEI) negotiation occurs, use the isdn tei-negotiation interface configuration and global configuration command. Use the no form of this command to remove TEI negotiation from an interface.
isdn tei-negotiation [first-call | powerup]
no isdn tei-negotiation
Syntax Description
first-call (Optional) ISDN TEI negotiation should occur when the first ISDN call is placed or received. powerup (Optional) ISDN TEI negotiation should occur when the router is powered on.
isdn transfer-code range
no isdn transfer-code
Syntax Description
range Number from 0 to 999 (ISDN transfer code).
To delay a National ISDN BRI switch a random time before activating the Layer 2 interface when the switch starts up, use the isdn twait-disable command in interface configuration mode.
isdn twait-disableSyntax Description
This command has no arguments or keywords.
To control the priority of data and voice calls for the telephones, fax machines, and modems connected to the router telephone ports, use the isdn voice-priority command in interface configuration mode. Use the no form of this command to disable a specified ISDN voice priority setting and to use the default setting.
isdn voice-priority local-directory-number {in | out} {always | conditional | off}
no isdn voice-priority local-directory-number
Syntax Description
local-directory-number Local ISDN directory number assigned by your telephone service provider. in Incoming voice call. out Outgoing voice call. always Always bump a data call for a voice call. conditional Bump a data call only if there is more than one call to the same destination. off Never bump a data call for a voice call.
Syntax Description
This command has no arguments or keywords.
Syntax Description
tei-number Terminal endpoint identifier, in the range 0 to 63.
To define specific characteristics of keyboard mappings, use the keymap command in global configuration mode. Use the no form of this command to remove the named keymap from the current image of the configuration file.
keymap keymap-name keymap-entry
Syntax Description
keymap-name Name of the file containing the keyboard mappings. The name can be up to 32 characters long and must be unique. keymap-entry Commands that define the keymap.
To specify the keyboard map for a terminal connected to the line, use the keymap-type command in line configuration mode. Use the no form of this command to reset the keyboard type for the line to the default.
keymap-type keymap-name
Syntax Description
keymap-name Name of a keymap defined within the configuration file of the router. The TN3270 terminal-type negotiations use the specified keymap type when setting up a connection with the remote host.
To ignore multiplex ID (MID) sequence numbers for sessions in an Layer 2 Forwarding (L2F) tunnel, use the l2f ignore-mid-sequence command in VPDN group configuration mode. To remove the ability to ignore MID sequencing, use the no form of this command.
l2f ignore-mid-sequenceSyntax Description
This command has no arguments or keywords.
To instruct L2TP access concentrator (LAC) or L2TP Network Server (LNS) using Layer 2 Tunneling Protocol (L2TP) to drop packets that are received out of order, use the l2tp drop out-of-order command in VPDN group configuration mode. To disable dropping of out-of-sequence packets, use the no form of this command
l2tp drop out-of-orderSyntax Description
This command has no arguments or keywords.
To define the maximum number of packets that can be queued locally for a session when a peer's receive window is full, use the l2tp flow-control backoff-queuesize command in VPDN group configuration mode. To change the value of the queue size-simply reenter the command with the new queue size value. To remove a manually configured flow-control backoff value, use the no form of this command.
l2tp flow-control backoff-queuesize queuesize
Syntax Description
queuesize Sets the queue size limit on a LAC or LNS so that when the remote peer's receive window is full, the LAC or LNS delays sending additional packets.
To define the maximum adaptive timeout for congestion control, use the l2tp flow-control maximum-ato command in VPDN group configuration mode. To reset the timeout to a new value, simply reenter the command with the new value. To remove a manually configured timeout value, use the no form of this command.
l2tp flow-control maximum-ato milliseconds
Syntax Description
milliseconds The wait time period, in milliseconds, before the LAC or LNS probes its remote peer's receive-window to resume sending packets.
To define the receive window on a LAC or Layer 2 Tunneling Protocol (LNS) and enable either device to send sequence numbers, use the l2tp flow-control receive-window command in VPDN group configuration mode. Use the no form of this command to remove a flow-control receive-window value and disable sequencing.
l2tp flow-control receive-window windowsize
Syntax Description
windowsize The number of packets that can be received by the remote end device before backoff queueing occurs.
To define a static round-trip time for congestion control, use the l2tp flow-control static-rtt command in VPDN group configuration mode. To apply a different value, simply reenter the command with the new value. To disable a static round-trip time, use the no form of this command.
l2tp flow-control static-rtt round-trip-time
Syntax Description
round-trip-time Sets the static round-trip time in milliseconds.
To enable Layer 2 Tunneling Protocol (L2TP) attribute-value (AV) pair hiding, which encrypts the AV pair "value," use the l2tp hidden command in VPDN group configuration mode. To disable L2TP AV pair value hiding, use the no form of this command.
l2tp hiddenSyntax Description
This command has no arguments or keywords.
To configure a Virtual Private Dialup Network (VPDN) group to preserve the ToS field of L2TP-tunneled IP packets, use the l2tp ip tos reflect command in VPDN group configuration mode. To specify a ToS field of zero for tunneled packets, use the no form of this command.
l2tp ip tos reflectSyntax Description
This command has no arguments or keywords.
To enable IP User Data Protocol (UDP) checksums on Layer 2 Tunneling Protocol (L2TP) payload packets, use the l2tp ip udp checksum command in VPDN group configuration mode. Use the no form of this command to disable IP UDP checksums.
l2tp ip udp checksumSyntax Description
This command has no arguments or keywords.
To enable the offset field in Layer 2 Tunneling Protocol (L2TP) payload packets, use the l2tp offset command in VPDN group configuration mode. Use the no form of this command to disable the offset field.
l2tp offsetSyntax Description
This command has no arguments or keywords.
To enable Layer 2 Tunneling Protocol (L2TP) tunnel authentication, use the l2tp tunnel authentication command in VPDN group configuration mode. Use the no form of this command to disable L2TP tunnel authentication.
l2tp tunnel authenticationSyntax Description
This command has no arguments or keywords.
To set the number of seconds between sending hello keepalive packets for a Layer 2 Tunneling Protocol (L2TP) tunnel, use the l2tp tunnel hello command. To change the tunnel hello value, simply reenter the command with the new value. To disable the sending of hello keepalive packets, use the no form of this command.
l2tp tunnel hello hello-interval
Syntax Description
hello-interval The interval, in seconds, that the LAC and LNS wait before sending the next L2TP tunnel keepalive packet.
To set the password that the router will use to authenticate the tunnel, use the l2tp tunnel password command in VPDN group configuration mode. To remove a previously configured password, use the no form of this command.
l2tp tunnel password password
Syntax Description
password Identifies the password that the router will use for tunnel authentication.
To connect to a local-area transport (LAT) host, use the lat EXEC command.
lat name [node nodename | port portname | /debug]
Syntax Description
name LAT-learned service name. node nodename (Optional) Specifies a connection to a particular LAT node that offers a service. If you do not include the node name option, the node with the highest rating offering the service is used. Use the show lat nodes EXEC command to display information about all known LAT nodes. port portname (Optional) Specifies a destination LAT port name. This keyword is ignored in most time-sharing systems, but is used by routers and network access servers offering reverse LAT services. Reverse LAT involves connecting to one router from another, so that the target router runs the host portion of the protocol. Enter the port name in the format of the remote system as the portname argument. /debug (Optional) Enables a switch to display parameter changes and other special messages.
To specify access conditions to nodes on the local-area transport (LAT) network, use the lat access-list command in global configuration mode. Use the no form of this command to remove a specified access list number.
lat access-list number {permit | deny} nodename
Syntax Description
number Specifies a number between 1 and 199 assigned to the line using the access-class line configuration command. permit Allows any matching node name to access the line. deny Denies access to any matching node name. nodename Specifies the name of the LAT node, with or without regular expression pattern matching characters, with which to compare for access. The UNIX-style regular expression characters allow for pattern matching of characters and character strings in the node name.
Syntax Description
This command has no arguments or keywords.
To allow a name to be assigned to the group list, use the lat group-list command in global configuration mode. Use the no form of this command to remove the specified group list.
lat group-list groupname {number | range | all} [enabled | disabled]
Syntax Description
groupname Specifies a group code name. number Specifies a group code number. You can enter both a group code name and group code numbers. range Specifies a hyphenated range of numbers. all Specifies the range from 0 to 255. enabled (Optional) Allows incremental changes to the list; that is, you can add a group code without retyping the entire command. disabled (Optional) Allows selective removal of a group code from the list.
To set the number of receive buffers that will be negotiated when the router is acting as a local-area transport (LAT) host, use the lat host-buffers command in global configuration mode. Use the no form of this command to return to the default of one receive buffer.
lat host-buffers receive-buffers
Syntax Description
receive-buffers An integer that specifies the number of receive buffers that will be negotiated. The argument can be any number from 1 to 128.
To set the rate of the keepalive timer, use the lat ka-timer command in global configuration mode. Use the no form of this command to restore the default.
lat ka-timer seconds
Syntax Description
seconds The timer rate in seconds.
To change the local-area transport (LAT) node name without changing the system host name, use the lat node command in global configuration mode.
lat node node-name
Syntax Description
node-name Name of the LAT node.
To define a group list for a line's outgoing user-initiated connections, use the lat out-group command in line configuration mode. Use the lat out-group 0 command to return to the default value.
lat out-group {groupname number | range | all}
Syntax Description
groupname Group code name. number Group code number. You can also enter both a group code name and group code numbers. range Hyphenated range of numbers. all Range from 0 to 255.
To enable remote local-area transport (LAT) modification of a line's characteristics (for example, baud rate), use the lat remote-modification command in line configuration mode. Use the no form of this command to disable remote LAT modification of line characteristics.
lat remote-modificationSyntax Description
This command has no arguments or keywords.
Syntax Description
number Number of retries; any number from 4 to 255.
To set the number of receive buffers that will be negotiated when the router is acting as a local-area transport (LAT) server, use the lat server-buffers command in global configuration mode. Use the no form of this command to return to the default of one receive buffer.
lat server-buffers receive-buffers
Syntax Description
receive-buffers Integer that specifies the number of receive buffers that will be negotiated. The argument can be any number from 1 to 128.
To reenable local-area transport (LAT) broadcast service announcements, use the lat service-announcements command in global configuration mode. Use the no form of this command to disable the sending of LAT service announcements.
lat service-announcementsSyntax Description
This command has no arguments or keywords.
Syntax Description
service-name Name of the service.
Syntax Description
groupname Specifies a group code name. number Specifies a group code number. range Specifies a hyphenated range of numbers between 0 and 255. all Specifies the range from 0 to 255. enabled (Optional) Allows incremental changes to the list; that is, you can add a group code without retyping the entire command. disabled (Optional) Allows selective removal of a group code from the list.
To set the local-area transport (LAT) service identification for a specified service, use the lat service ident command in global configuration mode. Use the no form of this command to remove the identification.
lat service service-name ident identification
Syntax Description
service-name Name of the service. identification Descriptive name (text only) that identifies the service.
Syntax Description
service-name Name of the service. password Password used to gain access to the service.
Syntax Description
service-name Name of the service. static-rating Static service rating. The rating must be in the range of 1 to 255.
To configure a node to act as proxy for other nodes when a solicit-information multicast message is received, use the lat service-responder command in global configuration mode. Use the no form of this command to remove any proxy definition set up using the lat service-responder command.
lat service-responderSyntax Description
This command has no arguments or keywords.
Syntax Description
service-name Name of the service. group Rotary group number.
Syntax Description
interval Number of seconds between service announcements. Note that the granularity offered by this command is ten-second intervals, and the interval value is rounded up.
Syntax Description
number Specifies the number of sessions that will be multiplexed onto a single LAT virtual circuit. This number cannot be greater than 255.
Syntax Description
milliseconds Timer value. Specifies the amount of time LAT will wait before sending traffic. Acceptable values are between 10 and 1000 milliseconds.
Posted: Wed Jul 26 11:46:27 PDT 2000
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