145
Installing and Wiring Telephones
October 2002
Auxiliary Connector Outputs (MCC1 and
SCC1 media gateways only)
Connect a 25-pair cable from the AUX connector on the back of the expansion control carrier to
a connecting block on the trunk/auxiliary field.
‘‘Auxiliary Lead Appearances at AUX Connector’’ on page 146
shows the Control Carrier
outputs cable pinouts. The Control Carrier AUX connector outputs include:
• Seven -48 VDC power sources for emergency transfer units
• Three -48 VDC power sources for remotely powering three attendant consoles or
telephone adjuncts
• A relay contact that actuates a customer-supplied light, bell, or similar device. The relay
can activate when a major, minor, or warning condition occurs. The device connected to
the alarm leads must not exceed a rating of 30 volts AC rms or 60 volts DC at 0l75
amperes.
‘‘Auxiliary Lead Appearances at AUX Connector’’ on page 146
shows the pinouts for an
external alarm.
‘‘Port Circuit Pack and Telephone Pin Designations’’ on page 140
provides port circuit pack
and telephone pin designations.