User's Manual
DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r 
555-233-115 
Issue 1
April 2000
Fiber Link Administration 
A-3Administer Fiber Links 
A
Administer Fiber Links on Simplex Systems 
Administer the TN570 Expansion Interface and the TN574 or TN1654 DS1 
Converter circuit packs. 
1. Type 
change circuit packs
 and press 
Enter. Scroll through the pages on 
the form until the carrier containing the new circuit packs displays on the 
screen. 
2. Enter the circuit packs into the appropriate slot locations on the form. 
Press 
Enter when finished.
3. Type 
list fiber
 and press 
Enter. All administered fiber connections display. 
4. If a previously used fiber link is to be reused, enter 
add fiber 
<
number
> 
and press 
Enter. If this is a new fiber link, type 
add fiber next
 and press 
Enter. The Fiber Link Administration screen appears. Each fiber link is 
identified by a fiber number. 
a. Type 
y
 or 
n
 in the field 
Is one endpoint remoted via DS1 
Converter complex?
 and press 
Enter.
b. Enter the location of the TN570 and the TN574 or TN1654 circuit 
packs for both ENDPOINT-1 and ENDPOINT-2.
c. Scroll to page 2 of the form. Enter 
y
 as applicable, in each 
Facility Installed?
 field (A, B, C, and D). 
d. In the 
Bit Rate:
 field, type either 
1.544
 (T1) or 
2.048
 (E1). 
e. Enter the idle code in the 
Idle Code MSB (1) . . . . LSB 
(8):
 field. The default value is 
11101000
. It is recommended that 
the default value be used unless it becomes absolutely necessary 
to change it. The “MSB” means Most Significant Bit, the “LSB” 
means Least Significant Bit. 
f. In the 
Line Coding: 
field, enter the line coding information. This 
information should match the line coding of the facility. For T1, 
example line coding is 
b8zs
. For E1, example line coding is 
hdb3
. 
NOTE:
If this data is not correct, wideband errors (multimedia call 
handling) may occur. 
5. For T1 sites, refer to ‘‘T1 Installations Only’’
. For E1 sites, refer to ‘‘E1 
Installations Only’’.










