Verilink 9000 Series (34-00271) Product Manual Manual de usuario descargar pdf (Pagina 47)

100

101

9111 Connections

9111

Port 1

T1 Option

This section describes the 9111 Internal T1 Card. The card is a one-port T1

interface card for the 9111 MultiPro series unit. The module has an RJ-48

connector and is located above the supervisory port as shown in Figure 2-4. The

internal T1 card is configured using the switches located on the rear panel.

Switch S1

Switch S1 is a 12-position

DIP switch located on the

rear panel of the 9111. This

switch provides the

configuration parameters

shown in Table 2-9 and

Table 2-10

Table 2-9

Switch S1

1-5

DSOs Assigned:

These five positions select the bit rate and the number of DSOs

assigned to the channel (see Table 2-10).

Rate Multiplier:

Sets the multiplier for the input timing (see Table 2-10). The unit

operates at any data rate that is a multiple of 56 or 64 kbps.

Channel Assignment:

The Contiguous mode assigns the channels as a block

beginning at DS0 channel 1. If Alternate is selected, channel assignments are made

with an idle channel following each data channel.

Timing Source:

This switch determines the unit’s clocking source.

Network Coding:

B8ZS or AMI. Because AMI mode is sensitive to zero-bit density,

B8ZS is recommended for a more robust configuration.

Network Framing:

D4 or ESF only

11,12

Network LBO:

These switches set the network signal level (in decibels) of data

transmitted towards the T1 facility. The signal level is determined as shown in Figure 2-5.

65431 2

56 kbps

Alternate

64 kbps

Contiguous

Network Clock

(Looped)

Internal Clock

(Master)

ESF

B8ZS

AMI

LBO

Network

A A

-22.5

-7.5

-15

12119 1087

Figure 2-5

Switch S1

DS0s Assigned

(see Table 2-10)

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 439 440

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