2-Wire/4-Wire = 4 Wire
TX Level = (as required; use -15 dBm if line loss is 0 dB) Dial Backup = Manual
Loop Back Time = 15 minutes
Dial Line = RJ11
Line Current Disconnect = Long
Long Space Disconnect = Enabled
V.22 Guard Tone = Disabled
∙MNP Options
MNP Protocol = Enabled
Auto Fallback = Enabled (or Normal) Flow Control = CTS Only XON/XOFF Pass Through = Enabled Data Compression = Disabled Inactivity Timer = Off
Break Control = 5
∙DTE Options
Synchronous/Asynchronous Data = Asynchronous DTE Rate = 9600
Character Length = 8 Bits 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 6A. See the customer-specific system documentation print-outs for Concentrator Card connector pin-out details.
Table 5 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 5 and 6A and Table 12. 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'sGpunch 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 5 and in the cable's assembly diagram shown at the end of this manual (page 37). 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.
