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Chapter 3. Operation
36 NxT1 HSSI/V.35 Module User Manual 61200771L1-1
C
ONFIG
Read Security: 5; Write Security: 5
Contains parameters to include T1 data streams to the HSSI interface.
P
RT
Displays the port number for the T1s mapped to the NxT1 HSSI
interface. Ports 1 through 4 are the T1 interfaces located on the
NxT1 HSSI Option Module. Ports 5 through 8 are T1s mapped to
the NxT1 HSSI Option Module in the Dedicated Maps.
G
ROUP
A
SSOCIATION
Associates T1s (either mapped to this card and/or the on-board T1s)
with the HSSI interface data stream. To add the T1 to the data
stream, select the G
ROUP
1 option.
S
CRAMBLE
Enabling the SCRAMBLE option configures the NxT1 HSSI Module
to prevent ones density violations when transmitting ADTRAN
IMUX headers on a T1 circuit with AMI line coding.
HSSI M
ENUS
Read Security: 5
Provides status, configuration, and testing parameters for the 50-pin SCSI-
II HSSI interface.
S
TATUS
Read Security: 5
Displays the current loopback status of the HSSI interface
L
OOPBACK
Displays the current loopback status of the HSSI interface. The fol-
lowing loopback options are possible (see Figure 3-4 on page 37):
L
OCAL
DTE L
OOPBACK
A local DTE loopback occurs at the DTE port of the DCE, and is
used to test the link between the DTE and DCE (NxT1HSSI mod-
ule).
L
OCAL
L
INE
L
OOPBACK
A local line loopback occurs in the IMUX engine and is used to test
functionality between the DTE and the IMUX engine.
R
EMOTE
L
INE
L
OOPBACK
A remote line loopback occurs at the T1 interface and is used to test
functionality between the DTE and the T1 interfaces.
Use extreme caution when disabling the S
CRAMBLE
option. ADTRAN recommends
enabling the SCRAMBLE
option for normal use.