
INSTALLATION
Trunk Access Equipment
The trunk access equipment (TAE) consists of
700A- 110-M-25 or 700A-66-B1-25 (157BF) Cut-Down Jack
Trunk circuits that appear on the network interfaces are grouped by trunk type (Direct Inward Dialing [DID], Central Office [CO], or Tie) and punched down on the 700A jack. One 700A jack is required for each RJ21 X or RJ2GX network interface. The
10B Emergency Transfer Unit (ETU)
During a power failure or system outage, each 10B ETU provides contact closures for bypassing the switch and connecting up to five predesignated FCC registered
Screw terminals that connect to relay contacts which may be used for an external alerting device are also provided. The relay contacts close when a failure occurs. (Any alerting device and associated power unit with a dc current requirement less than or equal to 0.5 ampere may be used.) The ETU also controls a DID