Demand test descriptions and error codes - Avaya Support

Table 92: DS1 Interface Options administration 2 of 3
Field Description
Idle Code Set the idle code for all facilities on the TN1654 DS1 converter board. This
field can accept any combination of ones (1) and zeros (0) with the
exception that the second left-most digit must be set to one (1) at all times.
Appears on the fiber-link screen for TN1654 DS1 converter circuit packs
CRC This field determines if CRC is enabled for every facility on a TN1654 circuit
pack. The field is y if a cyclic redundancy check (CRC) is to be performed
on transmissions that the board receives.
CRC only applies to E1 operation and appears on the Fiber-link screen only
for TN1654 DS1 converter circuit packs with a bit rate of 2.048 Mbps.
DS1
Converter-1
and
DS1
Converter-2
Line
Compensation
The DS1 facility line signal is pre-equalized at the transmitter on the DS1
converter circuit pack so that DS1 line pulses have correct amplitude and
shape when they reach the Network Interface (see Figure 19: DS1 Facility
Connections). The amount of equalization necessary is determined by the
distance to the Network Interface, and also by the type of wiring used to
connect to the Network Interface. If the equalization is not set to the correct
value, potentially high error rates (errored seconds) will be observed on the
DS1 facility. Table 93: DS1 Facility Line Signal Equalization Values
explains how equalization values are determined.
Line compensation is applicable only to T1 operation, thus these fields will
not appear on the fiber-link screen if the TN1654 DS1 converter is
administered for a bit rate of 2.048 Mbps.
Line Coding Administer the line coding for the DS1 facility. For the TN574 board and the
TN1654 board in T1 mode, the field may be set to ami-zcs or b8zs. If the
TN1654 board is set for E1 operation, the line coding may be set to either
ami-basic or hdb3. The line coding must be the same at each end of the
DS1 converter complex.
360 Maintenance Alarms for Communication Manager, Media Gateways and Servers
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