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AE/LZB 119 1894 R1A INTERCONNECTING THE EQUIPMENT

Parity = None

Commanded Dialer = Asynchronous

AT Command Set = Disabled

DTR Control = Disabled

DSR = Forced High

DCD = Normal

CTS = Forced High

DTE Fallback = Disabled

Options = Retained At Disconnect

• •

Test Options - All Disabled (or factory defaults)

• •

Dial Line Options - (not applicable; leave at factory

defaults)

• •

Speaker Options

Volume Control = Low

Control = On Until Carrier Detect

Audio Links

Audio Concentrator Cards at the back of the CEC/IMC

cabinet provide audio connections at the CEC/IMC. Like the

control data connections, audio connections are normally

extended out of the CEC/IMC cabinet via Telco cable(s) and

line terminations are actually made at punch blocks. See

Figure 7A. See the customer-specific system documentation

print-outs for Concentrator Card connector pin-out details.

Table 7 shows line requirements between the

C3 Maestro and the CEC/IMC for each audio input or

output 2-wire 600-ohm twisted pair. Note that two (2)

Enhanced Audio Enclosure output pairs, Line 2 out and Line

3 out are never used. These audio output lines are provided

for future expansion use.

At the C3 Maestro, audio connections terminate at the

DB-25 connector on the Enhanced Audio Enclosure's rear

panel. This connector is labeled "LINES 1-4". Its pin-out is

shown in Figures 6 and 7A and Table 11. It has female

contacts; therefore, the required mating connector is a male

DB-25.

Normally, a pre-wired 100-foot (30.5 meters) cable is

supplied with the console equipment package for audio

interconnections between the Enhanced Audio Enclosure

and the CEC/IMC. This 8-pair shielded cable's part number

is 19B804083P2. It has a male DB-25 connector on one end

for mating to the Enhanced Audio Enclosure's "LINES 1-4"

female DB-25 connector. The other end is "pig-tailed" (not

terminated) so the cable's 24-guage solid wires can be

punched down to the correct terminals at the required

CEC/IMC's punch block.

If cable 19B804083P2 is used, mate its DB-25 to the

Enhanced Audio Enclosure, route it to the CEC/IMC,

shorten it as required, and punch the wires to the correct

punch block's terminals. Wire color coding is indicated

in Figure 6 and in the cable's assembly diagram (page

22). Refer to the CEC/IMC customer-specific system

documentation print-outs for CEC/IMC Audio

Concentrator Card pin-outs which map over to the

punch blocks via Telco cables.

If cable 19B804083P2 is not used, fabricate an

equivalent cable, less unnecessary pairs, to interconnect

the required pairs between the Enhanced Audio

Enclosure's "LINES 1-4" DB-25 connector and the

appropriate CEC/IMC Audio Concentrator Card's pins

or CEC/IMC punch block's terminals. Shielded cabling

is recommended. See Figures 6 and 7 and Tables 7 and

11 for details.

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