PORT PROCESSORS/MODULES
940043-002 INTEGRATED ENTERPRISE NETWORK 3-45
HDM28
The HDM28 module (Part #030113-002) is a single 28.8Kbps modem with a two-wire
analog line interface to the CID63 port processor. The HDM28 module plugs into the
Expansion Card A, sockets CNEA1, CNEA2, CNEA3 and CNEA4, or Expansion Card B,
sockets CNEB1, CNEB2, CNEB3, and CNEB4 on the CID63 port processor. In expansion A
of the CID63 port processor, the two or four-wire option is provided. Expansion B is strictly
two-wire. Figure 3-43 illustrates the front and back side of the HDM28 module.
Figure 3-43 HDM28 Module
Note: There is a physical difference between the HDM14 and the HDM28 module. The HDM28
module has yellow stripes on the transformers and different processor chips.
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