1.4 Service Cards Description
Enlarged Single Line Telephone Circuit with Message Waiting (ESLC) Card (KX-
TD50175);
This card interfaces 16 Single Line Telephones (SLTs) and the TDM bus. It provides 16 SLTs
to the system per ESLC card. It has the capability to turn on/off the message waiting lamp of
an SLT.
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System Outline