Section
Chapter
Trunks and Lines
Loop-Start Trunks
Guidelines
l
Two versions of the loop-start trunk are available: the four-port version
10) and the eight-port version (VB-43511).
l
The following procedure covers loop-start trunk installation using the main
trunk connector. For instructions on using the expansion trunk connector,
see “Trunk and Line Expansion” on page 4-43
l
For
and color codes for the main trunk connector, see Table 4-2 on
tion
page
Installation without Caller ID
1. If installing VB-435
Loop Start Card:
a. Remove the cover from the L-TRK card (VB-435
b. Set the all option switches to ON as shown in Figure 4-2.
c. Replace the cover on the L-TRK card (VB-43511A).
4-2. L-TRK Card Strap Jl and Switch Locations
SW6
SW8
TK2 TK3
T K 4
TK6 TK7
TK8
SW1
-Strap
must be
cut to
receive
Caller ID
When a Caller ID Card Is Installed.
Set All Switches to the OFF Position
L-TRK Card
• i l
When No Caller ID Card Is Installed,
Set All Switches to the ON Position
DBS-70-300
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