In Figure 8-1, both the GT 70 and Router 2 are in a point-to-point configuration, where there is one router on the ISDN line. In this case, the routers can use both B channels.

Figure 8-1 ISDN Point-to-Point Configuration

In Figure 8-2, the GT 70 is sharing the ISDN line with another ISDN device in a multipoint configuration. In this case, the GT 70 and the other ISDN device each has access to the B channels.

Figure 8-2 ISDN Multipoint Configuration

Note: In both Figure 8-1 and Figure 8-2, the GT 70 is the S/T model.

Frame Relay Over ISDN Configuration

Figure 8-3 shows how you can connect to a Frame Relay network through an ISDN network. In this configuration, you set the data link on your dial circuit to Frame Relay.

Figure 8-3 Frame Relay Over ISDN Configuration

Switches Supported

The telephone company's switch variant, or type of switch, determines the capabilities of your ISDN service. It is your primary connection into the ISDN network. The switch variant determines how many ISDN devices you can handle, as well as what different configuration options you can have. Some switch variants support eight different devices, others support only two devices. The switch also determines which B channels support voice, video, data, or both. Most telephone companies provide a switch variant from one of switch variants in Table 8-1. OpenROUTE Networks routers support these switch variants.

Table 8-1 ISDN Switch Variants Supported
Location	If you want this switch standard . . .	Set the software to . . .
North America	United States National ISDN-1 United States National ISDN-2 AT&T 5ESS Custom Northern Telecom DMS-100 Custom	USNI1 USNI2 5ESS DMS-100
Europe	European ETSI NET3, VN4 VN3 (See the Note below.)	NET3 VN3
Japan	INSNet64 JPNLSD	INS64 JPNLSD
Australia	TS013	AUS

Note: As of October 18, 1996, VN3 is obsolete in Europe. When you call your telephone company, you must ask for the switch variant that they use. When you configure your router, you need to provide the switch variant.

ISDN Interface Restrictions

The following are some ISDN interface restrictions. You cannot

Boot the router over an ISDN interface.
Use the D channel for data traffic. The ISDN interface uses the D channel only for setting up and taking down B channel connections.
Use optional ISDN provider-supplied X.25 connectivity on the
B channels.

Before You Begin

Before you configure ISDN, you need to have the following information:

Telephone number(s) of the local ISDN interface.
Destination telephone numbers, including any telephone extensions.
Type of switch to which the ISDN interface is connected. See Table 8-1 for a list of switches that OpenROUTE Networks routers support.
The TEI (Terminal Endpoint Identifier) that your service provider assigns. For some North American switches, the service provider may assign a TEI for each B channel.
Whether or not your service provider requires Service Profile IDs (SPIDs). SPIDs are used only in North America. If the router uses both
B channels, you need a SPID for each B channel.
Whether you are configured for point-to-point or multipoint.

Displaying the ISDN Configuration Prompt

To display the BRI Config <ISDN> prompt

1. At the Config> prompt, enter list interfaces to display a list of interfaces.

Config>list interfaces
Ifc   0, Ethernet/IEEE 802.3 (via device Ethernet)
Ifc   1, Point to Point (via device WAN1, with Dialer)
Ifc   2, Frame Relay (via device WAN2, with LAN Emulation)
Ifc   3, Point to Point (via device ISDN)
Ifc   4, Frame Relay (via device ISDN, with LAN Emulation)

2. At the Config> prompt, enter network followed by the number of one of the "via device ISDN" interfaces to display the Circuit Config <NET #> prompt. In this case, Ifc 3 or 4.

Note: It does not matter which "via device ISDN" interface number you enter.

Config>network
What is the network number [0]? 3
Circuit Configuration

Circuit Config <NET-3>

3. At the Circuit Config <NET-#> prompt, enter bri to display the
BRI Config <ISDN> prompt.

Circuit Config <NET-3> bri
Basic Rate ISDN user configuration

BRI Config <ISDN>

You can configure all ISDN parameters from this prompt.

Configuration Procedures

This section describes how to configure your ISDN interface. The tasks you need to perform are

: 1. Adding ISDN addresses
: 2. Configuring ISDN parameters; Note: You must restart the router for any configuration changes to take effect.

Adding ISDN Addresses

You need to add an ISDN address for each destination. The ISDN address includes

Address name. Description of the address. You can use any string of up to 23 printable ASCII characters. Address names are case sensitive.
Network address. Directory number of the local or destination port. You can enter up to 25 numbers, as well as six other characters, including spaces and punctuation. The router uses only the numbers.
Network subaddress. Optional. Additional part of the directory number, such as an extension, that gets interpreted once the interface connects to a PBX. You can enter up to 20 characters, as well as 11 additional spaces and punctuation. The router uses only the numbers.

To add an ISDN address, enter add address at the BRI Config <NET-1> prompt.

BRI Config <ISDN> add address
Assign address name [1-23] chars? baltimore
Assign network dial address [1-25 digits]? 1-555-0983
Assign network subaddress [0-20 digits]? 23

To see a list of your ISDN addresses, enter list address at the BRI Config <ISDN> prompt.

To delete an ISDN address from your list, enter delete address at the BRI Config <ISDN> prompt.

The software prompts you for the dial and subdial address to distinguish between the primary telephone number and the sub-addresses of different ISDN peripherals at that number.

Multiple Numbers for an ISDN Address

You can enter multiple telephone numbers for one address name. If your configuration uses two ISDN directory numbers, enter both numbers for the local ISDN address. You can also add multiple numbers for a destination. The dial circuit attempts to call each of the numbers until it successfully connects to the destination.

To add two numbers for one address name, repeat the command using the same address name.

BRI Config <ISDN> add address
Assign address name [1-23] chars []? baltimore
Assign network dial address [1-15 digits][]? 1-555-2657
Assign network subdial address [0-20 digits] []? 24BRI Config <ISDN> add address
Assign address name [1-23] chars []? baltimore
Assign network dial address [1-15 digits][]? 1-555-8797
Assign network subdial address [0-20 digits] []? 25

To delete all numbers for an address name that has multiple numbers, do not enter a network dial address when prompted.

BRI Config <ISDN> del address
Delete address name [1-23] chars []? baltimore
Delete network dial address [1-15 digits][]? 
Really delete all addresses under this name?(Yes or [No]):yes

Configuring ISDN Parameters

This section describes how to configure the ISDN parameters.

1. At the Config> prompt, enter network followed by the number of the ISDN interface that you want to configure to display the Circuit Config <NET #> prompt.

2. Enter bri to display the BRI Config <ISDN> prompt.

Circuit Config <NET-3> bri
Basic Rate ISDN user configuration

BRI Config <ISDN>

3. Specify the type of switch to which you connected this ISDN interface. See Table 8-3 for a list of switch variants.

BRI Config <ISDN>set switch-variant
Switch-Variant-Model []? usni1

4. Set the ISDN interface to either point-to-point (pp) or multipoint (mp). Some switches require you to configure the line as multipoint regardless of how many devices are on it. Check with your ISDN service provider.

BRI Config <ISDN>set multipoint-selection
Multipoint Selection [MP]? pp
If you set the switch-variant to any type other than INS64, set the directory number of the local ISDN interface.  Be sure that your address is unique.
BRI Config <ISDN>set dn0
Enter DN0 (Directory-Number-0) [ ]?1-555-0983

BRI Config <ISDN>set dn0
Enter DN0 (Directory-Number-0) [ ]?1-555-0983:22

The colon (:) separates the address number from the sub-address.

5. If your service provider assigned a second directory number, set directory number one. ISDN lines that have two directory numbers can place or receive calls on either directory number. Therefore, you must configure both numbers or the interface may reject calls.

BRI Config <ISDN>set dn1
Enter DN1 (Directory-Number-1) [ ]?1-555-2037
You can assign a sub-address for dn1 in the same way as for dn0.  (See step .)
BRI Config <ISDN>set dn1
Enter DN1 (Directory-Number-1) [ ]?1-555-2037:28

6. In North America, service providers may require Service Profile IDs (SPIDs). A SPID is a number that uniquely identifies a specific profile of service characteristics available on a particular access interface (such as a B channel). Your ISDN service provider assigns SPIDs. Generally, if your service provider assigns two directory numbers, they also assign two SPIDs.

BRI Config <ISDN>set spid
Which SPID [1]? 1
Enter Service Profile ID (SPID) []? 50855589530101

7. Set the TEI (Terminal Endpoint Identifier) to match the signalling TEI number of your ISDN switch. Check with your service provider to find out what TEI signalling the switch supports. The default TEI is automatic. If the ISDN switch does not support automatic TEI signalling, set the TEI to the value that your service provider assigns.

If you are connected to a 5ESS, USNI1, or DMS100 switch, you may need to set a TEI for each B channel. When you enter set tei, the router prompts you for which TEI to configure. In a multipoint configuration, setting both TEIs allows the router to use both B channels and can prevent other ISDN devices on the multipoint bus from using a B channel. If you configure only one TEI, the router can use only one B channel, leaving the other B channel available for the other ISDN devices.

BRI Config <ISDN>set tei
Which TEI [0]? 0
TEI [AUTO]? 10
BRI Config <ISDN>set tei
Which TEI [0]? 1
TEI [AUTO]? 12

8. Set the frame size so that it is greater than or equal to the frame size of the data link protocol (PPP) running on the link. The options are 1024, 2048, or 4096 bytes. The default is 2048. OpenROUTE Networks strongly recommends that you accept the default.

BRI Config <ISDN>set framesize
Framesize in bytes (1024/2048/4096) [2048]? 2048

9. Enable DOSBS, if you want voice-grade connections for your data.

BRI Config <ISDN>enable dosbs

Configuring Point-to-Point ISDN

In an ISDN point-to-point configuration, your router must be the only ISDN device using both B channels. Figure 8-4 shows your local router with a point-to-point ISDN connection.

Figure 8-4 ISDN Point-to-Point Configuration

The following procedure assumes communication between your local router and two remote routers.

1. Display the BRI Config <ISDN> prompt.

Config>network 3
Circuit Configuration

Circuit Config <NET-3> bri
Basic Rate ISDN user configuration

BRI Config <ISDN>

2. Add ISDN addresses for the two remote routers.

BRI Config <ISDN>add address
Assign address name [1-23] chars []? Remote1
Assign network dial address [1-15 digits][]? 555-2389
Assign network subdial address [0-20 digits] []? 
BRI Config <ISDN>add address
Assign address name [1-23] chars []? Remote2
Assign network dial address [1-15 digits][]? 555-7925
Assign network subdial address [0-20 digits] []?

3. Set the type of switch connected to the ISDN interface.

BRI Config <ISDN>set switch-variant
Switch-Variant-Model []? usni-1

4. Set directory number 0 (dn0) and directory number 1 (dn1). (Skip this step for the INS64 switch variant.) Use the network dial addresses assigned to you by the telephone company.

BRI Config <ISDN>set dn0
Enter DN0 (Directory-Number-0) [ ]?5559876
BRI Config <ISDN>set dn1
Enter DN1 (Directory-Number-1) [ ]?5554961

5. Set the ISDN interface to point-to-point (pp).

BRI Config <ISDN>set multipoint-selection
Multipoint Selection [MP]? pp

6. Enter the SPIDs the ISDN service provider assigned.

BRI Config <ISDN>set spid
Which SPID [1]? 0
Enter Service Profile ID (SPID) []? 508555987600
BRI Config <ISDN>set spid
Which SPID [1]? 1
Enter Service Profile ID (SPID) []? 508555496100

7. Set the TEI to match the TEI signalling of the ISDN switch.

BRI Config <ISDN>set tei
Which TEI [1]? 0
TEI [AUTO]?
BRI Config <ISDN>set tei
Which TEI [1]? 1
TEI [AUTO]?

8. Set the frame size.

BRI Config <ISDN>set framesize
Framesize in bytes (1024/2048/4096) [1024]? 2048

Configuring Multipoint ISDN

In an ISDN multipoint configuration, your router can share the ISDN connection with other ISDN devices. Because of this, configure your router to use only one B channel. Otherwise, the router could use both B channels and prevent the other ISDN device from accessing a B channel. To configure the router to use only one B channel, set it up to use only one TEI and, if applicable, one SPID.

Figure 8-5 shows YOUR local router with a multipoint ISDN connection. The local router can connect to two remote routers.

Figure 8-5 ISDN Multipoint Configuration

To configure an ISDN multipoint connection, do the following:

1. Display the BRI Config <ISDN> prompt.

Config>network 3
Circuit Configuration

Circuit Config <NET-3> bri
Basic Rate ISDN user configuration

BRI Config <ISDN>

2. Add ISDN addresses for the two remote routers.

BRI Config <ISDN>add address
Assign address name [1-23] chars []? Remote1
Assign network dial address [1-15 digits][]? 555-2389
Assign network subdial address [0-20 digits] []? 
BRI Config <ISDN>add address
Assign address name [1-23] chars []? Remote2
Assign network dial address [1-15 digits][]? 555-7925
Assign network subdial address [0-20 digits] []?

3. Set the type of switch variant connected to the ISDN interface.

BRI Config <ISDN>set switch-variant
Switch-Variant-Model []? usni1

4. If needed by the switch variant, set directory number 0 (dn0) of the local port that was assigned by the telephone company.

BRI Config <ISDN>set dn0
Enter DN0 (Directory-Number-0) [ ]?5559876

5. Set the ISDN interface to multipoint (mp).

BRI Config <ISDN>set multipoint-selection
Multipoint Selection [MP]? mp

6. If needed by the switch variant, enter one of the SPIDs the ISDN service provider assigned.

BRI Config <ISDN>set spid
Which SPID [1]? 0
Enter Service Profile ID (SPID) []? 508555987600

7. Set the TEI to match the TEI signalling of the ISDN switch variant. If the switch to which you are connected uses two TEIs, the software prompts you for which TEI to set (0 or 1). Because this is a multipoint configuration, set TEI 1 to none so that the router does not use both B channels.

BRI Config <ISDN>set tei
Which TEI [1]? 0
TEI [AUTO]?
BRI Config <ISDN>set tei
Which TEI [1]? 1
TEI [AUTO]? none

8. Set the frame size.

BRI Config <ISDN>set framesize
Framesize in bytes (1024/2048/4096) [1024]? 2048

Displaying the ISDN Monitoring Prompt

To display the ISDN monitoring prompt

1. At the + prompt, enter network followed by the number of one of the ISDN interfaces. (You can identify the ISDN interfaces by entering list interfaces at the Config> prompt.)

+network 3

Circuit <NET-3>

2. Enter bri.

Circuit <NET-3> bri
Basic Rate ISDN user console

BRI <ISDN>

ISDN Commands

Table 8-2 summarizes the ISDN commands. Enter configuration commands at the BRI Config <ISDN> prompt. Enter monitoring commands at the BRI <ISDN> prompt.

Not all parameters apply to all router platforms. Press Space twice after you type a command to display the available parameters for each command. Enter help for information about using the command line interface.

Table 8-2 ISDN Commands

Command Task Function

Accounting Monitor Displays a history for each accounting entry: calls placed to and from the entry, the number of calls that were refused and blocked, and the channel uptime for outbound calls.

Add Configure Adds accounting entries and addresses to the ISDN configuration.

Calls Monitor Displays the name of the remote site, the number of calls made per channel, whether the calls were incoming or outgoing, the number that were refused, and the time the channel has been up.

Circuits Monitor Shows the status of all data circuits configured on the ISDN interface.

Conf_test_ cmds Monitor Do not use these commands. They are for use in a development environment only. They can disable the ISDN interface, requiring a router reset.

Delete Configure Removes accounting entries and addresses from the ISDN configuration.

Disable Configure Disables Data Over Speech Bearer (DOSBS) mode.

Enable Configure Enables Data Over Speech Bearer (DOSBS) mode.

Exit Configure/Monitor Returns to the previous prompt.

List Configure Displays the ISDN configuration.

Parameters Monitor Displays the current parameters for the ISDN interface.

Set Configure Sets the frame size, local address, physical bus to either point-to-point or multipoint, SPIDs, no answer timeouts, number of retries after no answer, type of ISDN switch, directory numbers, and TEI.

Statistics Monitor Displays the current statistics for the ISDN interface.

Table 8-2 ISDN Commands
Command	Task	Function
Accounting	Monitor	Displays a history for each accounting entry: calls placed to and from the entry, the number of calls that were refused and blocked, and the channel uptime for outbound calls.
Add	Configure	Adds accounting entries and addresses to the ISDN configuration.
Calls	Monitor	Displays the name of the remote site, the number of calls made per channel, whether the calls were incoming or outgoing, the number that were refused, and the time the channel has been up.
Circuits	Monitor	Shows the status of all data circuits configured on the ISDN interface.
Conf_test_ cmds	Monitor	Do not use these commands. They are for use in a development environment only. They can disable the ISDN interface, requiring a router reset.
Delete	Configure	Removes accounting entries and addresses from the ISDN configuration.
Disable	Configure	Disables Data Over Speech Bearer (DOSBS) mode.
Enable	Configure	Enables Data Over Speech Bearer (DOSBS) mode.
Exit	Configure/Monitor	Returns to the previous prompt.
List	Configure	Displays the ISDN configuration.
Parameters	Monitor	Displays the current parameters for the ISDN interface.
Set	Configure	Sets the frame size, local address, physical bus to either point-to-point or multipoint, SPIDs, no answer timeouts, number of retries after no answer, type of ISDN switch, directory numbers, and TEI.
Statistics	Monitor	Displays the current statistics for the ISDN interface.

Accounting [M]

Displays the number of calls made, accepted, refused, and blocked for each destination.

Syntax: accounting

Example: accounting

AccountingName Address Total: In Out Rfsd Outb_UpTime
gt70-43 98983500 0 0 0 0:00:00
gt70-44 98983600 0 0 0 0:00:00
----------------------------------------------------------------------
(unknown) - 0 - 0 -
Total Blocked Calls: 0


In	Inbound connections accepted for this dial circuit.
Out	Completed connections initiated by this dial circuit.
Rfsd	Connections initiated by this dial circuit and refused by the network or the remote destination port.
Outb_UpTime	Accumulated channel uptime for all outbound calls to this address.
Total Blocked Calls	Connection attempts blocked. The router blocks connection attempts if the local port is already in use or it reaches the maximum number of retries to a non-responding address.

Add [C]

Adds accounting entries and addresses to the ISDN configuration.

Syntax: add

accounting-entry
address

accounting-entry

Adds an address name to the list of addresses for which the router maintains accounting information. You can use accounting entries to track the number of calls made, accepted, refused, and blocked for each destination as well as the accumulated time for all outbound calls to each destination. The ISDN interface maintains accounting information for outbound calls only. Use the accounting command at the BRI monitoring prompt to display accounting information.

You can add up to eight entries for each ISDN interface.

Note: The accounting entry name must match one of the ISDN addresses you entered using the add address command. Example: add accounting-entry

Assign accounting entry name []? newark

address

Assigns a name to an ISDN address. Use these names, not the addresses, when you set destination addresses at the circuit configuration prompt.

It is important to add at least one ISDN address. This is the ISDN number of the remote router or server to which your router connects across ISDN. If the remote system has multiple numbers, then you must add each by using the add address command several times.

Example: add address

Assign address name [1-23] chars []? newark
Assign network dial address [1-25 digits] []? 123456789
Assign network subaddress [0-20 digits] []? 1011121314

Calls [M]

Displays the calls to and from each remote site, the calls that were refused or blocked, and the time the channel has been up.

Syntax: calls

Example: calls

RemoteSite Address Calls: In Out Rfsd ElapsedTime
(unknown) 0 0 0 -
(unknown) 0 0 0 -

Unmapped connection indications: 0

Circuits [M]

Lists statistics about calls currently in progress.

Syntax: circuits

Example: circuits

B-channel State BearerType Reason Duration
- Idle - Down -
- Idle - Down -


State	Current state of the dial circuit: Idle B channel cannot be used or assigned. Call- Call in progress. Call-Rxd Call received. Data Xfer Data being transmitted.
Bearer Type	The actual Bearer Service, such as: UDI, Speech, or 3.1 KHZ Audio. See DOSBS.
Reason	Reason for the current state: Up Currently connected using the B channel indicated. Down Failed to connect because of a busy dial circuit or because the data link protocol is down. Connecting Channel in process of making a call.
Duration	Length of time the channel has been up since restart of the router.

Conformance Test Commands [M]

Invokes a submenu, where various commands can be issued to the router for conformance test purposes.

CAUTION:
These commands should never be used. Using these commands during normal router operation can cause erratic behavior of the ISDN interface, requiring the router to be reset.

Delete [C]

Removes accounting entries and addresses from the ISDN configuration.

Syntax: delete

accounting-entry
address

accounting-entry

Removes an address name from the list of addresses for which accounting information is maintained.

Example: delete accounting-entry

Remove accounting entry name []? newark

address

Removes an ISDN address from the directory.

The software prompts you for the dial and subdial address to distinguish between the primary telephone number and the sub-addresses of different ISDN peripherals at that number.

Note: If you want to delete all numbers for an address name that has multiple numbers, do not enter a network dial address when prompted. Example: delete address

Delete address name [1-23] chars []? newark
Delete network dial address [1-25 digits] []? 1-508-366-2345
Delete network subdial address [0-20 digits] []? 22

Disable [C]

Disables Data Over Speech Bearer Service (DOSBS) for all destination ISDN addresses or for an individual destination or phone number. This command sets the mode to Data_only.

Syntax: disable dosbs destination name destination phone #

Example: disable dosbs

Enable [C]

Sets Data Over Speech Bearer Service (DOSBS) for all destination ISDN addresses to the default option of Voice_only or sets DOSBS for a paricular destination or phone number to a particular DOSBS mode.

Syntax: enable dosbs dest name dest phone # DOSBS mode

Example: enable dosbs

Exit [C] [M]

Returns to the previous prompt.

Syntax: exit

Example: exit

List [C]

Displays the current ISDN configuration.

Syntax: list

address
parameters

address

Lists all of the ISDN telephone numbers in the phone directory.

Example: list address

Address assigned name Network Address Network Subaddress
--------------------- --------------- ------------------
newark 123456789 1011121314

parameters

Lists the current configuration of the ISDN device. The configuration parameters listed vary depending on the switch variant selected.

Example: list parameters

                  ISDN Configuration

Switch Variant                       = NT DMS-100
Multipoint Selection                 = Point-to-Point
DN0 (Directory Number 0)             = 5559873
DN1 (Directory Number 1)             = 5552845
SPID0 (Service Profile ID 0)         = 508555987300
SPID1 (Service Profile ID 1)         = 508555284500
TEI0                                 = Automatic
TEI1                                 = Automatic
Maximum frame size (bytes)           = 1024
No circuit address accounting information being kept.

Parameters [M]

Displays current run-time configuration parameters of the ISDN interface.

Syntax: parameters

Example: parameters

                    Basic Rate ISDN Port Parameters:

 Switch Variant                            = US National ISDN-1
 Multipoint Selection                      = Point-to-Point
 DN0 (Directory Number 0)                  = 15551212
 DN1 (Directory Number 1)                  =
 SPID0  (Service Profile ID 0)             =
 SPID1  (Service Profile ID 1)             = 56789
 TEI0                                      = Automatic
 TEI1                                      = Automatic
 Maximum Frame Size                        = 2048

Set [C]

Configures directory numbers, frame size, addresses, multipoint selection, SPIDs, switch variants, preferred voice mode, and TEI.

Syntax: set

dn0
dn1
framesize
multipoint-selection
spid
switch-variant
preferred_voice_mode
tei

dn0 network dial address

If you set the switch-variant to any switch other than INS64, set the directory number of the local port.

Example: set dn0

Enter DN0 (Directory-Number-0) [ ]? 1-555-1234

If your router shares an ISDN S/T bus, you must also specify the extension (that is, the sub-address) assigned to your router.

ISDN Config>set dn0
Enter DN0 (Directory-Number-0) [ ]?1-555-1234:45

The colon (:) separates the primary number from the sub-address.

dn1 network dial address

Directory number 1 (dn1) is a second directory number. INS64 switches do not support a second directory number.

If your service provider assigned a second directory number, set dn1. ISDN lines that have two directory numbers can place or receive calls on either directory number. Therefore, you must configure both numbers or the interface may reject calls.

Example: set dn1

Enter DN1 (Directory-Number-1) [ ]? 1-555-2345

You can assign a sub-address for dn1 in the same way as for dn0.

ISDN Config>set dn1
Enter DN1 (Directory-Number-1) [ ]?1-555-2345:47

framesize 1024 or 2048 or 4096

Sets the maximum size of frames transferred over the ISDN interface. Does not include data link and MAC layer headers.

Example: set framesize

Framesize in bytes (1024/2048/4096) [1024]? 2048

multipoint-selection mp or pp

Sets the configuration of the ISDN physical bus to either a Point-to-Point (PP) or a Multipoint (MP) configuration. A Point-to-Point configuration is typically defined as one ISDN device on an ISDN line, whereas a Multipoint configuration is defined as two or more ISDN devices sharing an ISDN line. With some switch variants, however, a line is configured as Multipoint, regardless of how many Terminal Endpoints (TEs) are on it. ISDN service providers dictate whether you have the option of configuring the lines for either PP or MP, or whether the lines must be set one way or the other.

Example: set multipoint-selection

Multipoint Selection [PP]?

spid spid# spid-value

Sets the Service Profile IDs (SPIDs). In North America, ISDN service providers assign SPIDs to identify a particular ISDN device. A SPID is a number up to 20 digits long (typically, 10, 12, or 16 digits). SPIDs are used predominantly in a multipoint bus configuration, where multiple ISDN devices share a single ISDN line. However, they can be used in a point-to-point configuration as well.

Check with your ISDN service provider to determine whether or not your provider requires you to use a SPID. If you are using two directory numbers, you need to configure two SPIDs, 0 and 1.

Example: set spid

Which SPID [0]? 1
Enter Service Profile ID (SPID) []? 508555123400

switch-variant 5ess, dms100, net3, ins64, usni1, usni2, vn3, aus, or jpnlsd

Selects the switch variant.

The ISDN interface supports the switch variants listed in Table 8-3.

Table 8-3 ISDN Switch Variants Supported

Location If you want this switch standard . . . Set the software to . . .

North America United States National ISDN-1 United States National ISDN-2 AT&T 5ESS Custom Northern Telecom DMS-100 Custom USNI1 USNI2 5ESS DMS-100

Europe European ETSI NET3, VN4 VN3 (See the Note below.) NET3 VN3

Japan INSNet64 JPNLSD INS64 JPNLSD

Australia TS013 AUS

Note: As of October 18, 1996, VN3 is obsolete in Europe. It has been succeeded by VN4. Example: set switch net3

tei auto or value or none

Sets the signalling TEI (terminal endpoint identifier) for the ISDN interface. This setting must match the signalling TEI of your switch. Check with your service provider for the correct TEI value.

Valid values are 0 through 63, Auto, or None. The default is Auto. The software lets you set a TEI for each B channel for switch variants that require this capability.

For ISDN lines that use a single TEI, setting the TEI to None disables the ISDN interface. For ISDN lines that use multiple TEIs, setting one of the TEIs to None prevents the interface from accessing one B channel.

5ESS, DMS100, and USNI1 switches require that you set the TEI for each B channel (TEI 0 or TEI 1). If you set the switch variant to one of those switches, entering set tei prompts you for which TEI to configure. In a multipoint configuration, you should set TEI 1 to None. Otherwise, the router could allocate both B channels and prevent other ISDN devices on the multipoint bus from accessing a B channel.

Example: set tei

Which TEI ? [0]? 1
TEI  [NONE]?

Statistics [M]

Displays the current statistics for the ISDN device.

Syntax: statistics

Example: statistics

Link: Inactive BRI Firmware: 0.0 Handler State: Installed

D Channel B1 Channel B2 Channel

Total Transmits 0 0 0
Total Receives 0 0 0
Transmit Bytes 0 0 0
Receive Bytes 0 0 0
Invalid Interrupts 0 0 0

Transmit: D B1 B2 Receive: D B1 B2

Error 0 0 0 Error 0 0 0
Overflow 0 0 0 Overflow 0 0 0
Underrun 0 0 0 Overrun 0 0 0
Abort 0 0 0 Abort 0 0 0
CRC Error 0 0 0

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Chapter 8

Using the ISDN Interface

ISDN Hardware Configurations

Before You Begin

Displaying the ISDN Configuration Prompt

Configuration Procedures

Configuring Point-to-Point ISDN

Configuring Multipoint ISDN

Displaying the ISDN Monitoring Prompt

ISDN Commands

ISDN Overview

Line Provisioning

Leased Line

Call-back

Frame Relay Over ISDN Configuration

Table 8-1 ISDN Switch Variants Supported

Before You Begin

Displaying the ISDN Configuration Prompt

Adding ISDN Addresses

Configuring ISDN Parameters

Configuring Point-to-Point ISDN

Configuring Multipoint ISDN

Displaying the ISDN Monitoring Prompt

ISDN Commands

Table 8-2 ISDN Commands

accounting-entry

address

Calls [M]

Circuits [M]

Conformance Test Commands [M]

accounting-entry

address

Disable [C]

address

parameters

Parameters [M]

Set [C]

dn0 network dial address

framesize 1024 or 2048 or 4096

multipoint-selection mp or pp

spid spid# spid-value

switch-variant 5ess, dms100, net3, ins64, usni1, usni2, vn3, aus, or jpnlsd

Table 8-3 ISDN Switch Variants Supported

Statistics [M]