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INSTALLATION-PCB
SECTION 200-096-206
FEBRUARY 1991
TIE LINE 2
TIE LINE 3 TIE LINE 4
GROUND/ /h/f
FACTORY
POSITIONS)
P403
BACKPLANE CONNECTOR
P103
P203
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Programs 50 - 56
l
Defines Least Cost Routing using CO lines.
Program 78
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Assigns special ringing of CO lines: Night Ring
Over Page, DISA, IMDU.
Programs 81 - 89
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Assigns CO lines to ring selected stations.
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Assigns Delayed Ringing to any CO line.
Program 93
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Assigns names to CO lines.
8 E & M TIE LINE UNIT (PEMU)
8.00 General
8.01
Each E & M TIE Line Unit (PEMU) PCB
provides four TIE line interface circuits.
l
PEMU TIE lines may be configured for either 2-
or 4-wire transmission with Type I signaling.
l
The TIE lines provide immediate start operation
only.
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Each PEMU reduces system capacity by four
CO lines and four or eight station ports.
l
DK24 supports a maximum of one PEMU PCB,
DK56 a maximum of two, and DK96 a maximum
of three.
NOTES:
I. For the system to recognize the DTMF
tones generated by incoming TIE lines, a
CRCU (-4 or -8) must be installed on the
PCTWPCTUS I (refer to Paragraph 3).
2. The PEMU PCB uses four CO lines and
four station ports in software. Only 24
station ports are available with the
PCTUSi; however, in a DK24, only 16
station ports (not 20) will be available to
stations connected to PESU, PEKU, or
PSTU PCBs. A PCTU is required to sup-
port up to 24 stations and 4 TIE lines in a
DK24.
8.02 PEMU controls, indicators, and interfacecon-
nectars are shown in Figure 6-9 and described in
Table 6-F.
8.10 PEMU Hardware Options
8.11
There are no additional hardware options
supported by the PEMU. *
8.20 PEMU Installation Procedures
6-17