User Guide

Appendix C: WPIM-DI Configuration
C-2 Local Management User’s Guide
NI/DI Timeslot View — Displays the status of the Timeslot Configuration table. This field toggles
between Active and New. The Active setting displays current Timeslot Configuration table
settings. The New setting allows you to change Timeslot Configuration table settings. The default
setting is Active (D/I).
NI/DI Line Coding — Displays the line coding for the physical T-1 line. This field toggles
between B8ZS and AMI. The default setting is B8ZS.
NI/DI Frame Type — Displays the T-1 Frame type. This field toggles between ESF and D4. The
default setting is ESF.
NI/DI Tx Clock Source — Displays the T-1 Transmit Clock Source. This field toggles between
Loop Timing (Extracted Line Data) and Local Timing (Internal Clock). The default setting is Loop
Timing. If the DI Enabled field is set to diDataEnable, Local Timing cannot be selected as a
choice.
NI/DI Line Buildout — Displays the line coding for the physical T-1 line. Set this field to 0 dB
unless the service provider recommends another setting. The default setting is 0 dB. This field
steps between the following levels:
• 0 db
• -7.5 db
• -15 db
• -22.5 db
NI/DI Loop-back — Displays the loopback for the WPIM-DI. Loopback is a testing procedure
that segments the line and allows the user to isolate faults. This field toggles between None,
Line-Loop, and Payload-Loop. In Line-Loop the entire T1 is looped back. In Payload-Loop only
the 24 timeslots are looped back. The NI/DI Tx Clock Source must be in Loop Timing mode to use
this option. The default setting is None.
DI Enable — Displays the status of the Drop-and-Insert function of the WPIM-DI. This field
steps between On, Off, and diDataEnable. Choosing On allows another device (e.g., WPIM-T1)
that is connected to the DI interface of the WPIM-DI to use any timeslots that the WPIM-DI is not
using (Drop and Insert is enabled between the two ports). The data from the host device passes
through the NI port. Choosing Off allows the Network Interface to be used as a standard T-1 port.
Choosing diDataEnable enables Drop and Insert, and data from the host device will pass through
the DI port. The default setting is On.