Table of Contents

Understanding the Line Status Screen
Configuration Tasks for DS3 Lines

Viewing DS3 Line Status
Adding DS3 Lines
Changing DS3 Line Configurations
Deleting DS3 Lines

Configuration Tasks for DS1 Lines

Viewing DS1 Line Status
Adding DS1 Lines
Changing DS1 Line Configurations
Deleting DS1 Lines

Configuring Lines

The Cisco MGX 8260 Media Gateway connects to the Public Switched Telephone Network (PSTN) and other media gateways using DS3 lines. This chapter describes the setup procedure for a typical set of DS3 and DS1 lines for the Cisco SS7 PRI Gateway Solution. The DS1 lines you configure in this chapter are used for Backhaul signaling channels, as described in "Configuring MGC Interfaces.".

Understanding the Line Status Screen

The Line Status screen is the entry point for many configuration and monitoring tasks. Each line displays a row of icons that are hyperlinks to other configuration tasks (see Figure 8-1).

Configuration Tasks for DS3 Lines

You perform the following tasks to configure DS3 lines:

• View status

• Add lines

• Modify lines

• Delete lines

The procedures in this section explain how to configure all DS3 options and include a sample configuration that supports the Cisco SS7 PRI Gateway Solution. The sample configuration initializes nine DS3 lines, two redundant and seven nonredundant lines.

Viewing DS3 Line Status

To view DS3 line status, follow these steps:

Step 2 Click Dsx3.

Step 3 Click All Lines.

The Dsx3 Line Configuration screen opens:

Step 4 Interpret the display as follows:

Table Entry	Description
Slot	The slot number of the card with the DS3 line.
Line	The line number of the card with the DS3 line.
Line Type	The DS3 C-bit usage: dsx3M23 dsx3SYNTRAN (reserved for future use) dsx3CbitParity (reserved for future use)
Line Coding	The zero code suppression for this interface: dsx3B3ZS.
Line Status	The DS3 line status displayed as a row on indicators. Interpret the indicators from right to left as follows: 0: dsxNoAlarm 1: dsxRcvRAIFailure---receive RAI 2: dsxXmitRAIAlarm---transmit RAI 3: dsx3RcvAIS---receive AIS 4: dsx3XmitAIS---transmit AIS 5: dsx3LOF---receiving LOF 6: dsx3LOS---receiving LOS 7: dsx3LoopbackState---looping the received signal 8: dsx3RcvTestCode---receiving a test pattern 9: dsx3OtherFailure
Loopback Config	The source for the transmit signal clock: dsx3NoLoop dsx3PayloadLoop dsx3LineLoop

To view selected lines, follow these steps:

Step 2 Click Dsx3.

Step 3 Click Selective Lines.

The selection form opens:

Step 4 Enter the DS3 selection criteria:

Criteria	Description
Slot Number	The desired slot number. Valid entries are 1-16 and All.
Loopback Config	The loopback configuration of the line: dsx3NoLoop dsx3PayloadLoop dsx3LineLoop All
Line Type	The line type: dsx3M23 dsx3SYNTRAN (reserved for future use) dsx3CbitParity (reserved for future use) All
Line Status	The line status: Alarm present All

Step 5 Click Display.

The Dsx3 Line Configuration screen opens, displaying the lines that meet the selection criteria.

Adding DS3 Lines

To add DS3 lines, follow these steps:

Step 2 Click Dsx3.

Step 3 Click All Lines.

The Dsx3 Line Configuration screen opens.

Step 4 Click the + icon.

The Add Dsx3 Line form opens:

Step 5 Specify the line configuration:

Parameter	Description	Example
Slot	The logical number of the slot in the Cisco MGX 8260 chassis. Valid entries: 11-16.	See Table 8-2
Line	The number of the DS3 line, or the starting number of a range of DS3 lines. Valid line numbers: BSC: 501-506 DMC: 1-6 (reserved for future use)	See Table 8-2
Contiguous Creating Lines	The number of contiguous DS3 lines to add with this configuration.	See Table 8-2
Line Type	Indicates the DS3 C-bit usage: dsx3M23 (default) dsx3SYNTRAN (reserved for future use) dsx3CbitParity (reserved for future use)	dsx3M23
LoopbackConfig	Specifies the loopback test state: dsx3NoLoop (default) dsx3PayloadLoop dsx3LineLoop	dsx3NoLoop

Step 6 Click Add.

The system adds the DS3 lines.

Note When adding contiguous lines, the system stops adding lines if an error occurs.

Step 7 Repeat Step 5 and Step 6 for each DS3 line (see Table 8-2).

Table 8-2: DS3 Sample Configuration

Slot	Line	Contiguous Creating Lines
11	501	5
13	501	2
15 and 161	501	2

1Slots 15 and 16 operate as a redundant pair.

Changing DS3 Line Configurations

To change the configuration of a DS3 line, follow these steps:

Step 2 Click Dsx3.

Step 3 Click All Lines.

The Dsx3 Line Configuration screen opens.

Step 4 Click the i icon on the row with the line you want to modify.

The Dsx3 Line Status and Configuration form opens, which contains two panes---a card alarm pane and a configuration pane:

Step 5 Interpret the read-only information in the configuration pane as follows:

Displayed Information	Description
Current Period Time Elapsed	The number of seconds since the start of the near-end error measurement period
Valid Intervals	The number of 15-minute intervals during which the system collected valid data for the near end
Circuit Identifier	A text string describing the line
Line Coding	Defines the zero code suppression for this interface: dsx3BZS (fixed setting)

Step 6 Configure the DS3 line changes as follows:

Parameter	Description
Line Type	Indicates the DS3 C-bit usage: dsx3M23 dsx3SYNTRAN (reserved for future use) dsx3CbitParity (reserved for future use)
Loopback Config	Specifies the loopback test state: dsx3NoLoop dsx3PayloadLoop dsx3LineLoop
Send Code	Defines the type of code sent across the DS3 interface: dsxSendNoCode---sending looped or normal data (fixed setting)
Transmit Clock Source	Specifies the source for the transmit signal clock: localTiming---timing from local source (fixed setting)

Step 7 Click Modify.

The system applies the configuration changes.

Deleting DS3 Lines

To delete a single DS3 line, follow these steps:

Step 2 Click Dsx3.

Step 3 Click All Lines.

The Dsx3 Line Configuration screen opens.

Step 4 Click the - icon for the line you want to delete; then confirm your action.

The system deletes the DS3 line.

To delete a range of DS3 lines, follow these steps:

Step 2 Click Dsx3.

Step 3 Click All Lines.

The DSX3 Line Configuration screen opens.

Step 4 Click the - icon in the top row of icons.

The Delete Dsx3 Lines form opens.

Step 5 Type the number of contiguous deleting lines.

Step 6 Click Delete; then confirm your action.

The system deletes the DS3 lines.

Configuration Tasks for DS1 Lines

You perform the following tasks to configure DS1 lines:

• View status

• Add lines

• Modify lines

• Delete lines

The procedures in this section explain how to configure all DS1 options and include a sample configuration that supports the Cisco SS7 PRI Gateway Solution. The sample configuration initializes 79 DS1 lines, 23 redundant and 56 nonredundant lines. These DS1 lines are subchannels of the DS3 lines on the BSCs. You use these DS1 lines when configuring ISDN backhaul channels.

Viewing DS1 Line Status

To view DS1 line status, follow these steps:

Step 2 Click Dsx1.

Step 3 Click All Lines.

The Dsx1 Line Configuration screen opens:

Step 4 Interpret the columns as follows:

Column Entry	Description
Slot	The logical slot number.
Line	The DS1 line number.
Line Type	The type of DS1 line implemented in this circuit: dsx1ESF---Extended superframe DS1 dsx1D4---AT&T D4 format for DS1
Line Coding	The method used for zero-code suppression on this line: dsx1B8ZS dsx1AMI
Line Status	The DS1 line status. Interpret the indicators from right to left as follows: 0: dsx1NoAlarm---No alarm present 1: dsx1RcvFarEndLOF---Far end LOF (yellow alarm) 2: dsx1XmtFarEndLOF---Far end sending LOF indication 3: dsx1RcvAIS---Far end sending AIS 4: dsx1XmtAIS---Near end sending AIS 5: dsx1LossOfFrame---Near end LOF (red alarm) 6: dsx1LossOfSignal---Near end LOS 7: dsx1LoopbackState---Near end is looped 8: dsx1T16AIS---E1 TS16 AIS 9: dsx1RcvFarEndLOMM---Far end sending TS16 LOMF 10: dsx1XmtFarEndLOMF---Near end sending TS16 LOMF 11: dsx1RcvTestCode---Near end detects a test code (fixed at 0) 12: dsx1OtherFailure
Status	The line status: Up Down

To view selected lines, follow these steps:

Step 2 Click Dsx1.

Step 3 Click Selective Lines.

The selection form opens:

Step 4 Enter the DS1 selection criteria:

Criteria	Description
Slot Number	The desired slot number. Valid entries:1-16 and All.
Line Coding	The line coding: dsx1B8Zs dsx1AMI All
Line Type	The line type: dsx1ESF dsx1D4 All
Line Status	The line status: Alarm present All

Step 5 Click Display.

Step 6 The Dsx1 Line Configuration screen opens, displaying the lines that meet the selection criteria.

Adding DS1 Lines

You can add DS1 lines to NSC or BSC cards. When adding DS1 lines to BSC cards, add the appropriate DS3 line first.

To add DS1 lines, follow these steps:

Step 2 Click Dsx1.

Step 3 Click All Lines.

The Dsx1 Line Configuration screen opens.

Step 4 Click the + icon.

The Add Dsx1 Line form opens:

Step 5 Specify the line configuration:

Parameter	Description	Example
Slot	The logical number of the slot in the Cisco MGX 8260 chassis. Valid entries: NSC: 1-8 BSC: 11-16	See Table 8-3
Line	The number of the DS1 line. Valid entries: NSC: 1-16 BSC: 1-168 as shown by the following table of DS1 to DS3 mappings. DS3 Line Number DS1 Line Number 501 1-28 502 29-56 503 57-84 504 85-112 505 113-140 506 141-168	See Table 8-3
Contiguous Creating Lines	The number of contiguous DS1 lines to add with this configuration. The system stops adding lines at the first failure.	See Table 8-3
Line Type	The type of DS1 line, as follows: dsx1ESF---Extended superframe DS1 (default) dsx1D4---AT&T DS1	dsx1ESF
Send Code	The type of code sent across the DS1 interface. Valid entries are: dsx1SendNoCode (default) dsx1SendLineCode dsx1SendResetCode dsx1SendQRS dsx1Send511Pattern dsx1Send3in24Pattern dsx1SendOtherPattern	dsx1SendNoCode
Signal Mode	The signal mode for the transmit direction. In the receive direction, it is always set to robbed bit. Valid entries are: none---Reserve no bits for signaling and set channel bandwidth to 64 kbps (default) robbedBit---Use T1 Robbed Bit Signaling and set channel to 56 kbps. User may select ABCD bit encoding, but the Cisco MGX 8260 Media Gateway does not detect A/B signalling. Echo cancellation is enabled at setup unless a fax tone is detected. bitOriented---Use bit-oriented signaling messageOriented---Use message-oriented signaling	none
Line Coding	The coding used for zero code suppression on the DS1 line. Valid entries are: dsx1B8ZS (default) dsx1AMI	dsx1B8ZS
Loopback Config	The loopback configuration of the DS1 interface. Valid entries are: dsx1NoLoop---No loopback (default) dsx1PayloadLoop---Loop payload signal towards the line dsx1LineLoop---Loop signal towards the line dsx1LocalLoop---Loop signal towards the terminal	dsx1NoLoop
Transmit Clock Source	The clock source for the transmit signal: loopTiming---Use the recovered receive clock localTiming---Use the local clock (default)	localTiming

Step 6 Click Add.

The system adds the DS1 lines.

Note When adding contiguous lines, the system stops adding lines if an error occurs.

Step 7 Repeat Step 5 and Step 6 for each range of DS1 lines (see Table 8-3).

Table 8-3: DS1 Sample Configuration

Slot	DS1 Line	Contiguous Creating Lines	DS3 Line (implied)
11	8 85 127	4 28 1	501 504 and 505 505
13	5	23	501 and 502
15 and 161	1 36	29 1	501 502

1Slots 15 and 16 operate as a redundant pair.

Changing DS1 Line Configurations

To change the configuration of a DS1 line, follow these steps:

Step 2 Click Dsx1.

Step 3 Click All Lines.

The Dsx1 Line Configuration screen opens.

Step 4 Click the i icon on the row of the line you want to change.

The Dsx1 Line Status and Configuration form opens, which contains two panes: a card alarm pane and a configuration pane:

Step 5 Interpret the read-only configuration information at the bottom of the form as follows:

Information	Description
Current Period Time Elapsed	The number of seconds since the start of the near-end error measurement period.
Circuit Identifier	A text string describing the line.
Valid Intervals	The number of 15-minute intervals during which the system collected valid data for the near end.
Facilities Data Link	The type of facility data link: dsx1Fdl-none.

Step 6 Configure the DS1 line by specifying the following parameters:

Parameter	Description
Line Type	The type of DS1 line: dsx1ESF---Extended superframe DS1 dsx1D4---AT&T DS1
Send code	The type of code sent across the DS1 interface by the Cisco MGX 8260 Media Gateway. Valid entries are: dsx1SendNoCode dsx1SendLineCode dsx1SendResetCode dsx1SendQRS dsx1Send511Pattern dsx1Send3in24Pattern dsx1SendOtherPattern
Signal Mode	The signal mode for the transmit direction. In the receive direction, it is always set to robbed bit. Valid entries are: none---Reserve no bits for signaling on this channel robbedBit---Use T1 Robbed Bit Signaling bitOriented---Use bit-oriented signaling messageOriented---Use message-oriented signaling
Line Coding	The coding used for zero code suppression on the DS1 line. Valid entries are: dsx1B8ZS dsx1AMI
Loopback Config	The loopback configuration of the DS1 interface. Valid entries are: dsx1NoLoop---No loopback dsx1PayloadLoop---Loop payload signal towards the line dsx1LineLoop---Loop signal towards the line dsx1LocalLoop---Loop signal towards the terminal
Transmit Clock Source	The clock source for the transmit signal. Valid entries are: loopTiming---Use the recovered receive clock localTiming---Use the local clock

Step 7 Click Modify. The system applies the configuration changes.

Deleting DS1 Lines

To delete a single DS1 line, follow these steps:

Step 2 Click Dsx1.

Step 3 Click All Lines.

The DSX1 Line Configuration screen opens.

Step 4 On the DSX1 Line Configuration screen, click the - icon for the line you want to delete; then confirm your action.

The system deletes the DS1 line.

To delete a range of DS1 lines, follow these steps:

Step 2 Click Dsx1.

Step 3 Click All Lines.

The DSX1 Line Configuration screen opens.

Step 4 On the DSX1 Line Configuration screen, click the - icon in the top row of icons.

The Delete Dsx1 Lines form opens.

Step 5 Type the number of contiguous deleting lines.

Step 6 Click Delete; then confirm your action.

The system deletes the DS1 lines.

Posted: Tue Jun 20 20:41:57 PDT 2000
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