Table of Contents

Setting Up a Circuit Line
Other Circuit Line Commands
Flow Diagrams for Line Setup
List of Commands
cnfcassw
cnfln
dnln
dsplncnf
dsplns
prtclns
upln

Setting Up Lines

A circuit line is the physical line that carries frame relay, data, voice, or ATM traffic between customer equipment and an IPX, IGX, or BPX node. Each piece of equipment in the illustration above is attached to the node through a circuit line. After a card has been "upped" with the upcd command, a circuit line on that card can be "upped" and configured.

This chapter:

• Describes input circuit line formats

• Summarizes circuit line card combinations

• Explains how to set up lines

• Describes each command

The following table shows the permissible card combinations for CPE-to-IPX and IGX lines.

Setting Up a Circuit Line

Frame relay, data, and voice connections require an active line. Use the commands in the following steps to establish a line. The card must be in the active state before you enter these commands.

Step 2   Use cnfcln or cnfln to configure the circuit line.

The upcln and cnfcln commands establish the general parameters for the line but do not establish specific frame relay, data, or voice parameters. Refer to applicable chapters for details on a particular service. For example, "Data Connections" describes specific commands for data connections, and "Frame Relay Connections" describes specific commands for frame relay connections.

Other Circuit Line Commands

The following describes related commands.

• dnln—downs a line. A downed line is inactive, so no signals or statistics are generated. You must remove all connections on a line (delcon or delcongrp) before you down the line with dncln.

• dsplncnf—displays the configuration of a specified circuit line.

• dsplns—displays the circuit line configuration and alarm status for the node.

• prtlns—prints the circuit line configuration and circuit line alarm status for the node.

Flow Diagrams for Line Setup

Figure 5-1, Figure 5-2, Figure 5-3, Figure 5-4, and Figure 5-5 show the command sequence for setting up lines for voice, serial data, frame relay, ATM, and FastPADs, respectively. A yes/no decision branch for "Other Side?" and the vt command in the sequence indicates command sequences on local and far nodes. "Multiplex" refers to channelized streams.

Figure 5-1: Setting Up Voice Lines

Setting Up Data Lines

Setting Up Frame Relay Lines

Setting Up ATM Lines

Setting Up FastPAD Lines

List of Commands

Table 5-3 shows the full command name and starting page for each line command description.

cnfcassw

Configures a UVM to convert channel associated signaling (CAS) and dual-tone multi-frequency (DTMF) tones to common channel signaling (CCS) call control messages. This conversion is necessary for voice networks in which a Voice Network Switch (VNS) uses SVCs to route calls from a CAS-based PBX through a WAN. Model B or later firmware on the UVM is necessary.

• The line to which you apply cnfcassw must be up.

• If any connections exist on the line, you cannot change the cnfcassw parameters. However, you can execute the command to see the current parameters in the cnfcassw display.

• You cannot configure a line for both CAS-switching and pass-through.

• With CAS-switching on a UVM that has Y-cable redundancy, the call state of each connection is lost in the event of a switch-over.

cnfln

Configures a line to be compatible with the device to which it connects. The cnfln command applies to voice, data, frame relay, and ATM lines. See Table 5-2 for a list of the front and matching back cards. Because of the variety of line types and characteristics, the parameters section of this description has three tables to describe the parameters. The system automatically presents the correct options on the command line for each line type. If a parameter is not applicable to a card type, the system displays the parameter in half-tone or the value field of that parameter with dashed lines. Table 5-5 describes the parameters for voice, data, and frame relay parameters. Table 5-6 describes the parameters for the ATM Line Module (ALM/A). Table 5-7 describes the parameters for the ASI line card (BPX node).

For an ALM/A, the cnfln command lets you configure the receive rate and header type and enable payload scrambling. For more details on the features and configurable parameters of the ALM/A, refer to the Cisco IGX 8400 Series Reference and the Cisco IGX 8400 Series Installation manuals. Note that, although the cnfln display shows the transmit rate, you cannot configure it because the ALM/A transmit rate is always the maximum line rate.

Full Name

configure line

Syntax

cnfln <line> <parameters>

Related Commands

dspln, dsplncnf

Attributes

Example 1

cnfln 14

Description

Configure voice line 14.

System Response

Example 2

cnfcln 7 n 2

Description

Configure a frame relay T1 line for the following options: no loop clock and a receive impedance of 75 ohms.

System Response

Example 3

cnfln 4.2 7F 0 N

Description

Configure ASI port 4.2 with an idle code 7F and without payload scrambling.

System Response

Example 4

cnfln 12

Description

Configure the ALM/A in slot 12.

System Response

dnln

Deactivates ("downs") a line. After dnln executes, the line no longer generates framing, and no statistics are gathered. Before you deactivate a line, use delcon to remove all connections on the line.

Full Name

Down line

Syntax

dnln <line number>

Related Commands

upcln, dsplns

Attributes

Example

dnln 12

Description

Deactivate line 12.

dsplncnf

Displays the configuration of a line. Table 5-9 shows all possible parameters in the display. The fields that actually contain data depend on the type of line.

dsplns

Displays basic configuration and status information for all the lines on the node. The information includes the line number, the type of line, and the line alarm status. The line type shows whether the line is J1, T3, E3, T1, or E1 and shows the number of configured channels. Line status categories include:

Full Name

display lines

Syntax

dspclns

Related Commands

dncln, dsptrks, upcln

Attributes

Example

dsplns

Description

Display circuit lines on the node.

System Response

prtclns

Prints the current line configuration and line alarm status for a node. This command uses the same syntax, and prints the same information as is displayed using the dsplns command. See the dspclns command for syntax and output information.

Full Name

print line configuration

Syntax

prtlns

Related Commands

dspclns

Attributes

Example

prtlns

Description

This command uses the same syntax and prints the same information as is displayed using the dsplns command. See the dsplns command for syntax and output information.

upln

Activates (ups) a line. The upln command makes the line available for configuring and causes statistics gathering to begin. You must execute upln at both ends of the line. Executing upln at only one end of the line eventually causes an alarm. Once both ends of the line are active, you can add connections with the addcon command or optionally configure the line's signal characteristics for the data you intend for the line. See cnfln for information on defining the line characteristics.

A line consists of a cable for transmitting data and the interface circuitry for the line. The cable can be a coaxial wire, fiber optic, or a twisted pair. See Table 5-2 for information on card combinations.

Full Name

Up line

Syntax

upln <line number>

Related Commands

cnfcln, dsplns, dspln, dncln

Attributes

Example 1

upln 4.2

Description

Activate line 4.2. After this command executes, the system displays the status of the line using the same information as dsplns displays.

System Response

upln-Parameters

Posted: Wed Jan 17 21:37:09 PST 2001
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