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September 1999 P/N 880-503284-001-A1 - page 17 / 65

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Quick Set-Up

Figure 2-3

NCC 2020 Configuration Menu

CSU

CONFIGURATION

  • --

    FW

Rev

1.4

HW

Fab

0.8

Type NCC 2020 --

  • -------

    << eq

    • W)

      framing

    • F)

      format

    • J)

      jitt buf

    • R)

      eq crc

    • Y)

      xcode yel

    • M)

      distance

  • -------

    >> eq

<<------- SF AMI 40 BITS REGEN TO NET 0-133 >>-------

|

W)

framing

ESF

|

F)

format

AMI

|

J)

jitt buf

40 BITS

|

R)

net crc

REGEN

|

Y)

xcode yel

OFF

|

L)

lbO

0 DB

| K) keep alive

AIS

| T) alm thld

DEF

| | | | | |

I) idle code

ONES

|------->> net >>-------

|---------------

  • --------

    |

Z) density

12%+80z

|---------------

  • --------

    |

|-------<< net <<-------

  • X)

    exit menu

  • S)

    save csu config

  • A)

    diu bus

  • P)

    prm OFF

NONE

C1-C5) canned config

  • Q)

    restore csu config

  • B)

    diu clock THRU

[1,1] NEAR TAC 2010 >

The factory default values for the NCC 2020 are shown. The unit is in CSU mode (DIU bus = NONE) and the network interface (shown at top right) is set for ESF framing and AMI line coding format.

The DSX-1 Equipment interface, shown at top left, is set for SF (D4) framing and AMI line code. For this quick set-up, the Equipment interface is not being used, as it would be in CSU mode or Drop and Insert mode. Because this example will use all 24 timeslots for data on a DIU 2130 module, Mux mode is required.

  • 1.

    Type “A” and press ENTER. The prompt for bus selection appears: DSU Bus (1)NONE (2)A (3)B (4)C (5)B,D&I EQ (6)A,D&I NET >. Select “2” to use Data Bus A. This means that the CSU and the DIU 2130 will use Data Bus A in the shelf to pass data back and forth. The CSU is now in Mux mode. The EQPT LED changes from red to green.

  • 2.

    Type “F” and press ENTER. The prompt for line format appears: Line Format(eq,net) 1(AMI,AMI) 2(AMI,B8ZS) 3(B8ZS,AMI) 4(B8ZS,B8ZS) >. Select “4” for B8ZS (since the Equipment side interface is not used, selection 2 would also work).

3.

The default value for the density enforcement selection is not correct for a B8ZS T1. Use the “Z” command and select “1” to change it to NONE. B8ZS was developed to eliminate the need for density enforcement.

Verilink NCC 2020 User Manual

2-3

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