Installing A Did Choke; Did Choke (Figure 3-11) - NEC ux5000 Hardware Manual

S 3-11
ECTION

INSTALLING A DID CHOKE

3.11.1

DID Choke (Figure 3-11)

If your central office has a high level of AC noise or if your site is experiencing excessive hum on the DID lines,
a customer-provided isolation transformer can be installed between the UX5000 and telco blocks to help to
suppress the hum.
DID trunks must be bridged from the telco RJ21X to a line cross-connect (A) block. The choke is installed
between these two blocks.
DID Choke Installation:
Chapter 3
Figure 3-11: DID CHOKE INSTALLATION
Chapter 3 - Installing Extensions and Trunks
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