Specifications
Installation and Operation Manual  Appendix  D Supervision Terminal Commands 
FCD-E1LC Ver. 1.0  Commands D-9 
Parameter Function  Values 
RX_INBAND 
Enables the activation of a main link 
remote digital loopback in response 
to the reception of the inband 
loopback code from the remote 
system 
ENABLE – Inband loopback command 
accepted. 
DISABLE – Inband loopback command 
ignored. 
Default: DISABLE 
INBAND_LOOP_ 
PATTERN 
Selects the type of loopback 
activation and deactivation 
sequences 
RDL LOOP – Use of the FT1/FE1 RDL 
sequence in accordance with T1.403. 
USER CONFIG – Use of user-defined 
patterns. 
Default: RDL LOOP 
BERT_MODE 
Selects the main link timeslots in 
which the BER test will be performed 
CH1 – The BER test will be made in the 
timeslots assigned to data channel 1. 
CH2 – The BER test will be made in the 
timeslots assigned to data channel 2. 
S1 – The BER test will be made in the 
timeslots assigned to the sublink. 
USER – The BER test will be made in the 
timeslots selected by the user. 
Default: CH1 
USER_PATTERN_LEN 
Defines the length of the 
user-defined activation or 
deactivation sequence. 
This field is displayed only when 
INBAND_LOOP_PATTERN is USER 
CONFIG 
The allowed range is 1 to 8. 
Default: 1 
USER_ACTIVATE_PAT 
Used to specify a loopback 
activation pattern. 
This field is displayed only when 
INBAND_LOOP_PATTERN is USER 
CONFIG 
Select 1 or 0 for each changeable place in 
the template. 
Default: 0 
USER_DEACTIVATE_ 
PAT 
Used to specify a loopback 
deactivation pattern. 
This field is displayed only when 
INBAND_LOOP_PATTERN is USER 
CONFIG 
Select 1 or 0 for each changeable place in 
the template. 
Default: 0 
If the BERT_Mode parameter is USER, then after pressing <Enter> to end the 
selection of the loopback deactivation pattern you will see the first row of the 
timeslot selection map. A typical display is shown: 
TS 01  TS 02  TS 03  TS 04  TS 05  TS 06  TS 07 
NO NO NO NO NO NO NO 










